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SHARK - IONFlex™ 2X DuoClean™ IF251 Bagless Cordless Pet Stick Vacuum - Blue stream-Front_Standard

Customer rating

Rating 4.6 out of 5 stars with 135 reviews

94%
would recommend to a friend

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  • Rating: 4 out of 5 stars

    Shark vs Dyson!!!

    Posted
    TonyMSP
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    So you’re in the market for a premium cordless vacuum and having a hard time deciding between the Shark IONFlex DuoClean IF251 and the Dyson v8 animal? Look no further as I will pit them against one another in this review. Shark’s Pros: *Comes with two batteries *Great cleaning brush and bristle rollers (more on this later) *Stores standing up with no need for a wall mount Shark’s Cons: *Mediocre attachments *Doesn’t dump its bin without you reaching in it (ick) *Cost I have been using the Dyson v8 animal for the past 6 months and love the vacuum. Using this as my basis, the Shark will have to really outperform to get my 5 star rating. Battery: It comes with removable batteries and comes with 2! This is a big bonus over the dyson as I can keep a shark battery on the charger and one in the vacuum. Each shark vacuum battery lasts just as long as the dyson’s so this is essentially twice the run time. I didn’t time the actual run time but it does last the entire duration of vacuuming my 1600 sq ft townhome on the regular setting. There is a “max” setting but that will surely deplete your battery before finishing the main floor. The shark does come with a charging dock for the battery but the bonus feature over the dyson is that you can choose how to charge the unit. With the dyson, you either have to wall mount it or charge the entire unit by an outlet. The shark’s removable batteries can be charged on their own so the vacuum can stay in your closet and the batteries next to a wall outlet. Big win for Shark on this as the Dyson sits out in the open while it charges. I prefer to hide the vacuums in the closet when not in use. Cleaning: The shark does an amazing job at cleaning the carpet and hard floors. It has this motorized head that has two styles of rollers on the bottom. First brush in the front is a very soft bristle that does a great job on hard floors and “fluffing” my medium pile carpet. With it activated, its almost like the vacuum self propels itself. The 2nd roller is more of a traditional nylon brush designed to lift the debris from the carpet and into the suction part of the head. With this two roller combination, the cleaning path really only takes one pass to get a very good clean. The only downfall is that hair can get wound around the roller and a pain to remove. They do make it a little easier to maintain the rollers by having a removable top lid to gain access to the rollers from the top. Weight: While the Shark and Dyson may weigh very similar in weight, the dyson gets an advantage on the balance. The batteries are heavy and the placement of the batteries can really affect the handling. The Dyson has the battery along the bottom of the grip so when you’re gripping it, the weight is better distributed. The Shark has the battery running vertical making it feel very nose heavy. I feel like I am less fatigued with how the Dyson is balanced than the Shark. Storing: The Shark does stand up on its own with the floor attachment! This is by the ingenious design of bending it in the middle. The Dyson has to either be wall mounted, leaned up against a corner, or laying along the ground. A nod towards the Shark on this innovated design. The bend in the middle also allows you to vacuum underneath things without too much strain on your back. Attachments: The Shark comes with the standard crevice and dusting attachments. The attachments are friction fit and does not “snap in” like the Dyson’s. The tool that its lacking is a motorized brush attachment. For the price, you would expect it to come with one. How else am I suppose to get dog hair off the couch? The Dyson comes with one and I use it regularly on the hand vac mode. I did contact Shark and you can purchase one separately for $59. You decide if its worth it. Summary: At this price point, you will need a lot more than an extra battery to beat Dyson. While the extra battery was a big bonus. It wasn’t enough to edge me into recommending this Shark vacuum over a Dyson. The fact that you have to reach into the bin to fully empty it and the missing motorized brush head attachment was a big miss for me. If you purchased the optional motorized brush head, you will already be in the same price range as the Dyson v8 animal. This vacuum would have been better suited in the midrange pricing tier. If you are Shark loyal, I would still be happy with this vacuum as it does a fantastic job at doing both carpet and hard floors. The price point, lack of motorized brush attachment, and dust bin design kept this vacuum from 5 stars.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Packs a lot of punch

    Posted
    YourMainDude
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    Presentation The Shark - IONFlex DuoClean IF251 is packaged in a slender box with clear instructions on how to set things up. The unit feels solid when removing it from the box and has an overall clean but not too flashy presentation to go up against the competition. The gross weight of the vacuum leans a little to the heavy side – compared to a Dyson – but considering the size and robustness of the brush unit, I would still qualify the entire system as relatively light weight. Initial Setup Setup was simple and straightforward. Assembling the few pieces were simple and required little effort. The unit comes with 2 battery packs which we fully charged prior to using. This initial battery charge cycle took about 2 hours for each battery. Being the ‘pet version’, this system comes with a full array of attachments which should please most consumers and makes the IONFlex extremely versatile. Performance The electronic controls on the handle assembly are easy to read and easy to use. Multi-speed and carpet vs. solid surface flooring settings at the touch of a button are properly placed – as is the on/off control. The unit is a bit loud in operation – but about as loud as we expected. The dust/dirt collection compartment is properly sized and easy to remove/reinstall. Having two batteries included in this kit is appropriate. At full speed and in carpet mode, we were able to clean two entire rooms – mostly with carpeted flooring – before depleting an entire battery. At the slower speed it can tackle another full room of cleaning – essentially covering our entire 1st floor. The brush/polisher head does drive forward with authority and takes some getting accustomed to but after a few days it felt completely natural in the hand. The flex action of the wand is a really smart feature and another demonstration of Shark ingenuity. It’s nice to have that ‘flexibility’. One important note worth mentioning - the L-ion batteries need to be allowed to cool down prior to charging them back up. You may notice that the two outer LED charging indicators (blue) will flash in unison. This is because the system is warning you that the charging process isn’t going to start and that the battery pack is still too hot internally. Similar products behave the same way but do not have a visual status to the charging state – so kudos to the Shark engineers. Let the batteries sit for 30 minutes before charging if you run them hard to empty and always have the second battery fully charged and ready to go – for big jobs. Summary Pros: Ease of setup. Does a really nice job of cleaning compared to the competition. A great option for anyone with solid flooring.. Plenty of reserve battery power with the addition of the second battery pack but runs long enough on a single battery to clean our entire downstairs comprised of tile and carpeted floors. Relatively small, elegant profile with unobtrusive lighting, easy to use controls. Cons: May be too loud for some folks. May be too heavy for some as well. We can recommend this product as a good way to maintain a healthy and clean home for those with & without pets – especially those with mainly tiled, hardwood or manufactured material flooring. The polishing action of the cleaning head is an ingenious facet to the design. The integrated electronic controls are also well engineered. This Shark product exceeded our expectations.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Powerful, Portable, Flexible and 2 Rollers!

    Posted
    Orion
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    The Shark IONFlex DuoClean is an amazing little stick vacuum with lots of reach and portability. There is a lot of power in this vacuum, combined with it’s light weight, this vacuum really pulls itself across the floor. I love having a cordless vacuum now, it makes vacuuming just a little less of a chore for me. I do have pets though, so with the small canister, it fills up quickly. Which means either more frequent vacuuming, or emptying the canister a few times when vacuuming my entire house. Pet hair does get caught up in the roller however that seems to happen with all vacuums and Shark gives you very easy access to clean the rollers so it’s not a big deal. Pet hair also gets wrapped up around the filter in the canister but it pulls off easily. We have 2 dogs, one long-haired Border Collie and a Blue Heeler so we have a lot of pet hair in our house. For a smaller house and or a small family without pets, this vacuum is perfect. This can also tackle the jobs needed for a larger household with pets, you will just need to empty the canister often, occasionally change the battery and keep the backup battery charged. You will also need to keep the filters inside the canister clean and check them more often. I really like the design of this vacuum. It takes up very little space and can easily tuck into any corner or closet space. The MultiFLEX stick allows the vacuum to bend, like your elbow, to reach far under furniture and other hard to reach spaces. At first impression, I thought it looked a little strange but now I love it because it works great! The DuoClean feature is an amazing addition to vacuums and I hope it becomes the standard. The front roller grabs dirt and particles and pulls them into the vacuum, where other vacuums tend to push some things forward. The front roller is also great for vacuuming right up to the wall to grab the debris that’s pushed against the edge, it works just as well as if I use the hose. The bottom of the vacuum is lined with small brushed around the perimeter of the suction cavity. These little brushed help to keep the dirt under the vacuum and prevent debris from being blown back out onto your floor. Being able to use this as a handheld vacuum is also a great bonus. I love that I can clean my car and other small places without having to be attached to a cord. I’m very happy with this vacuum and think it’s perfect for anyone looking for an all-in-one, lightweight, portable vacuum that will likely last you many years. The price is a little high but that’s because of everything you get...the DuoClean roller, the MultiFlex bending stick, the portability of a battery operated vacuum, the extra battery, the charging stand, and the list goes on. You won’t be disappointed with this vacuum.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Built nicely!

    Posted
    CoppinFam
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    I have owned a shark vacuum before and I have been impressed, so my standards were a little high. All I can say is this would be an awesome upgrade to any current vacuum. For every negative there is definitely a positive. In the box is the floor suction piece with TWO brushes! Then the attachment pole and the vacuum handle that is supported by an ion battery. You get 3 hose attachments and an extra battery! I have not fully charged the battery yet but lets just say that with charging for an hour only one light is blinking. The manual states it takes 3.5 hours to have a full charge and to definitely charge right out of the box. One negative for me is the weight of the handle. I think that the ion battery contributes to this BUT there are other handles in place to so that you are using the vacuum with both hands when it feels like it is starting to get heavy. Its kind of like a baby, he/she is light at first but after awhile he/she starts to get heavy and the additional handles do help with the weight. Another negative for me is the dirt trap. It is really small and sometimes the dirt does not come completely out. I had a ton of dog hair that was sucked up and a lot of it got caught and I had to use something to get it out. However, it does suck up a lot of stuff so it is well worth the negative. Positives for me is the cordless part! I have owned a cordless vacuum before but I had to put the vacuum on the charger. I love how you can actually take the battery out and charge (plug the cord to the battery) or put battery on the charge stand and charge. I must say that I love this and I will never go back to using a cord or vacuum charge base. It is so nice to go all over the house and not have to unplug and plug as well! The next best part for me is the different button for different types of floor. I have laminate hardwood, vinyl, and rugs all of the house and I press the button to the different types of floor. Also, there is a button to switch between speeds like everyday cleaning or max power and all of the buttons are easy to press with your thumb. One more positive, everything has a label! If you can unhook or move it, there is some type of message for each part that moves. Its good for me because I was able to do even more with the vacuum. The attachments are pretty standard, I got them with my other Shark vacuum BUT there is an attachment for blinds and celling fans! I love it! Would I buy this vacuum again, YES! Would I recommend to friends or family? Absolutely!

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    So Impressed!

    Posted
    GennyJones

    I have agonized over making a cordless vacuum choice. These are expensive pieces of equipment. I didn’t want to make a purchase I regretted. I have read every review and report comparing Dyson and Shark Cordless vacuums. I have tested both in stores multiple times. Shark just had some benefits over the Dyson that were critical to me. One being the “on switch” needing to be held down inoder for the Dyson to operate. In my testing at several stores after just a few minutes I was getting a blister on my hand between my thumb and index finger. The Shark did not cause that problem. Another strike against the Dyson models is the lack of a removable battery. These batteries don’t last forever. They degrade over time. I would much rather be able to buy just a new battery rather than have to replace the whole vacuum when the time comes. Plus I can buy additional batteries and have extended use time. So I went with the Shark. I am so glad I did. It is wonderful! It has plenty of suction to clean my carpet and left my hardfloors feeling clean. We have a lot of sand that gets dragged in, since we live in Florida. I hate the way it feels when I walk around barefoot. The Shark seems to have gotten it all up. The on button and the power settings are all right there within easy reach of your thumb, which because it doesn’t have a blister from holding the on switch continuously, can change the settings quickly as you move from carpet to hard floors. I will say that floor rugs do get caught in the rollers if you try to use the carpet setting on them. The hard floor setting handled them just fine, however. The flex portion of this vacuum is such a nice feature. I had back surgery last year and continue to have issues. This makes vacuuming under furniture much easier for me and saves my back. It also allows this vacuum to stand on its own and makes it easier to store. As far as batteries are concerned I can vacuum our whole 1900 sqft home with a half and half mix of carpet and tile with the 2 batteries that came with the vacuum. I leave it on extended runtime and there is just enough power to finish the job with a little left to spare. I will buy an extra set of batteries from Shark eventually so that I have extras for using the deep clean setting from time to time. I am happy with the attachments that came with the Shark vacuum. The quality of them impressed me. They don’t feel cheap or flimsy. There is a good variety. I don’t have a dog that sheds or cats so I didn’t need a pet attachment, but one is available on the Shark website if you do. And now to move on to the dirty part of this review. Emptying the dirt cup!!! Some reviews made it sound like it was way to hard to empty out all the stuff the Shark picked up. (While at the same time saying it didn’t pick up anything!? Can you say fake reviews? SMH) Emptying the dirt cup is as easy as detaching the wand from the handle with the push of a button. Then taking the handle (containing the dirt cup) to a trash can. Then one more button push and a door opens on the bottom and the dirt falls out. It couldn’t be any easier. I haven’t cleaned the filters yet, but videos show that being an easy task, as well. All of the reviews saying that the Shark isn’t powerful enough or that it isn’t as good as the Dyson are totally unfounded. I am sorry that I listened to them and that I didn’t just make my decision sooner. It would have saved me a lot of angst. The Shark IonFlex DuoClean 2X is a great cordless vacuum. I am so glad I took the leap. I look forward to clean floors and less back pain thanks to Sharks innovative design. Thanks for reading my review. Happy vacuuming!

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    If your in the market, get one

    Posted
    GAHokie
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    As a point of reference, I’ve owned an earlier version of the stick vacuum companies currently tend to measure themselves against. Right off the bat, this is a hefty unit. Total weight with brush bar, extension tube, and power head is 8.8 pounds. That’s 4 pounds heavier than what I have been using. Interestingly, though the power head only accounts for .5 pounds. The bulk of the extra weight is in the brush bar. From a design standpoint, it’s understandable though as you can tell the brush bar is a more involved beast. From a design standpoint, I’m neutral on this. It’s kind of interesting but it’s definitely not a fully clean/polished look. I like the headlights on the brush bar. The low angle light allows you to see the dirt better. I noticed the corded versions of this vacuum also have a light on the power head, this one does not. It’s great that you can fold this down and it’ll stand up on it’s own. The removable battery is great and allows for flexibility of charging. I still do wish you could just pop the whole unit into a wall charger though like my other vacuum. That way it’s always topped off, without having to deliberately plug it in. The dust cup is easy to empty. I do have pets though so like my other vacuum, I still have to reach in and pull the debris off the mesh filter. You do have to remove the power head from the tube though to dump the bin. Otherwise the tube makes it harder to dump directly into the trash. Operation wise, it cleans well. It does a much better job of picking up larger debris. Think leaves, beads, dislodged carpet fibers that land on the bare floor (from a cat tree), bugs, etc. I did notice though on my low pile utility rugs, it doesn’t clean the litter well on the bare floor setting. I had to change to the carpet setting to get the litter up in a single pass. The instructions give the impression you only need to change to the carpet setting for higher pile. Because of the suction, this does tend to just suck to door mats, litter mats and the corners/edges of lighter area rugs you have to pull the two apart or turn the vacuum off. Because of the power in this vacuum, it is slightly an unwieldly beast. When I get it on carpets the brush head pulls itself forward. Which is probably one of the reasons it doesn’t do well with litter on the carpet on the bare floor setting. On the bare floor setting the brushes rotate slower. So, it’s moving forward too fast to really suck up the debris. I’ve found it best, when on carpets, to put your free hand on top of the power head to give you a little more control and move at a slower pace. I’ll give it credit though, you can see where the brush bar has whipped up those carpet fibers to clean. Something I don’t get with the other handheld vacuum. The bend feature is an awesome ability. It allows me to get under low objects. My robot vacuum does great for the living room so I utilize this vacuum in the bedrooms to get under beds and dressers. There’s also a power button instead of a trigger so you don’t have to worry about finger fatigue. The brush bar disengages when the tube is almost perpendicular to the brush bar, which makes maneuvering in short/tight spaces a bit of a pain as you’ll think you’re vacuuming and then notice the green light on the brush bar is off. At least that green light acts as an indicator. I used an uncalibrated sound meter and both vacuums registered about the same dB’s in normal and max suction. The Shark sound profile is a little different though and gives me the impression it’s actually quieter. Run time on one battery is comparable with my other vacuum. Keep in mind I do have an earlier version. The second battery I’m sure helps you contend with today’s version. It would have been nice if they had just figured out how to pack more juice into the batteries since the other guys is doing it with only minor growth in size. Overall, I really do like the vacuum. Between this, my other handheld and the robot vacuum, we haven’t touched our upright in months. It comes with a number of accessories I haven’t really used yet. Eventually I’ll get me the powered mini bar to make it easier to clean the stairs. Because of not being able to wall mount this and the performance with litter on low pile rugs, I did dock it a star. I am comparing that low pile performance versus my other vacuum in normal suction (not max), hence the desire for it to have done better.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Like Two Vacuums in One

    Posted
    Janine
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    As far as vacuum cleaners go, Shark has up until now, been one of the last brands I'd consider purchasing. However, after trying out this model, I can appreciate the appeal of what Shark’s line of carpet care products have to offer. First off, it's a good idea to review the instructions, especially with regards to storage of the vacuum when not in use. This Shark does not stand up on it's own, so be mindful of that. Assembling the vacuum was easy, as was converting it to use as a hand-held, and switching out the included attachments. This Shark IONFlex DuoClean IF251 Bagless Cordless Pet Stick Vacuum is versatile. Of particular interest to me was being able to use this vacuum as both an upright or a hand-held unit. And when used as a hand-held, you can feel the power. The vacuum had no problem cleaning my cat’s shed hair off her carpeted cat tree stand using the Pet Multi-Tool attachment. When vacuuming my area rug, my arms got a workout; which isn't necessarily a negative, but rather, an added bonus. All the Smart Response Technology controls are right there in the digital display, located on the hand-held unit, and only light up when the vacuum is turned on. The transition from cleaning my carpet to moving onto the bare floor was simply a matter of changing the surface settings on the display. And when switching to max power for more heavy-duty cleaning - you can definitely see (and feel) the difference in how the machine performs. This Shark runs quiet, and is considerably lightweight. There are dual lights on the head (floor unit), and I really liked being able to see the roller as it turns, through the clear front panel. Removing the roller to clean out any hair wrapped around it was pretty straightforward, via the tabs on either side of the head unit. Emptying the dust cup (dirt compartment) was simple, and not too messy as long as you pay attention to what you're doing. Accessing the anti-allergen filters in order to clean them was simple, as well. But again, pay attention to the instructions with regards to allowing the filters to completely dry after washing, and before you insert them back into the machine. This vacuum cleaner is cordless - and that is awesome! Having two rechargeable batteries (ION Power Packs) included is a definite plus - while one is in the hand-held unit, the other can be charging in the convenient ION Power Pack docking stand which has suction cups on the bottom for increased stability. Plus, the MultiFLEX wand bends and can be extended, to reach hard-to-get-at places underneath furniture. I do, however, think this model is a bit overpriced. But, that being said, there are definitely many features of this particular Shark vacuum that performed above and beyond my expectations. So, if you’re in the market for a dual-use vacuum, that takes up little room in your hall closet, and boasts the suction power necessary to handle pet hair, then this Shark might just be what you’re looking for.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great Cleaning and Pretty Good Elsewise

    Posted
    KansasMeddlingMom
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    This Shark-IonFlex DuoClean 251 is a very lightweight and easy maneuverable vacuum with its swivel base head. I had recently vacuumed my carpet with a much older Shark upright model and I was amazed by how much this machine picked up in additional human hair, pet hair, and just other dirt. It was very easy to put together, however, it would have been nice if there was a way to secure onboard some or all of the additional tools that were sent with the vacuum. A pet multi tool, an anti-allergen duster crevice tool, and an anti-allergen dust brush were part of the equipment in the box to be used in various situations. One is able to vacuum for quite a while on battery because 2 batteries are included. Now, there are 3 ways in which to charge the battery not currently in use: 1) leave the power pack in the vacuum and insert the charger into the power pack and connect to a wall outlet, 2) take the power pack out and insert the charger directly into the wall, or 3) take the power pack out and set it up in the charging caddy which has non-stick grippers on its bottom and safely attached itself to a level surface. Charging is very easy. Now, there are 2 settings when in use-a lower level, everyday running power level and a max power for heavy duty cleaning. Clearly, the max power will require more battery and the life will be shorter. I would say that you can vacuum for about 20-.30 minutes,give or take, without interruption. The power pack easily lets the user know with visible indicator lights on the status of the charge. Likewise, the power pack also easily lets the user know where in the charging process it stands. I really like how easily the multi-flex head can get under furniture that one usually has to move in order to get to the carpet underneath it. On the day I was able to start putting this Shark through its paces, Shark has a special value on a national television retailer. That Shark was a lift away, duo-clean model and had the same roller and duo-clean rollers on it and they were accessed the same way as this machine. However, I noticed that that model had a small, onboard pick/brush to clean the regular roller head; this one does not. When I first vacuumed, that would have come in handy because there was a lot of hair caught in the roller and I used a pick-like tool to get the hair out of the roller. This hair does not simply release by going in an opposite or different direction as another manufacturer's pet hair eraser machine does.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great everyday vacuum without strings attached

    Posted
    cinsteadofak
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    I received the Rocket Complete last year and was so impressed with its compact size, features, and cleaning ability, but wished it was not tethered down by an electric cord. The Shark IONFlex DuoClean offered a chance to vacuum freely, and I was curious how it would compare with the Rocket Complete. I ended up being pretty impressed with this cordless vacuum. Assembly/preperation As with most modern vacuums, no tools are required for assembly. There is a quick start guide, but it is not really necessary. The batteries must be charged before use and discharged fully before recharging to condition the batteries. There are two batteries included and 3 different ways to charge them: in the unit, on the charging base, or directly to the charging cable. I noticed the manual states that all three lights will be lit once fully charged, but this is inaccurate. All three led lights will become dark and no longer blink once fully charged (see photo). Use I first used the vacuum on the Carpet/Max Power setting on medium length carpet, and one battery lasted about 13 minutes. I found the suction power was very good and it picked up about as much dust/dirt as any corded vacuum. I then used the vacuum on the hard floors using Floor/Extend Runtime, but did not determine the battery life due to completing the task. I like how the spinning brushes turn at a slow rate to loosen dirt, but not fast enough to scratch the floor surface. This allows this vacuum to clean better than any corded vacuum I have used with the brush turned off. Storage/Maintenance The problem with many stick vacuums is that they cannot stand upright. With Shark’s Multiflex lock, you can fold the vacuum in half and leave it standing or carry it to the next room with the built in handle. This is a great improvement over the Rocket Complete, where you must remove the vacuum from the wand or hang it on the wall. I was disappointed to find this vacuum does not have a quick pull-release for the hard bristle spinning brush like the corded Rocket Complete has. I have to often remove hair wrapped around the brush and removing the brush made this task a lot easier. Pros 2 batteries included Cleans hard floors better than corded vacuums (with brushes removed) Multiflex system for storage Cons No quick pull-release for hard bristled spinning brush Narrow cleaning path (about 9”) Two filters which must be cleaned regularly (monthly) Overall I would recommend this vacuum for everyday cleaning. It cleans as well as corded vacuums on carpet and even better on hard surfaces. Even though the battery does not last long, Shark provided two batteries, unlike its competitor. The two batteries combined should last long enough to do a deep cleaning for about 4 good sized rooms.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Unique vacuum that works very good.

    Posted
    SteveC
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    This is our third cordless vacuum, the others being a Dyson V7 and Hoover bag less upright. Ours floors are tile and laminate with a couple area rugs and a few runners and throws so I won’t be judging this on deeper pile carpets. I noticed it’s heavier than the Dyson, but it also has more options and is closer to a regular upright in use. My wife really doesn’t care for the weight and said it’s a little heavy and bulky for her tastes, but would use it without much problem otherwise. It comes with two batteries and I like all the charging options this gives you, either by the charging dock or by plugging in the battery directly into the power cord either attached to the vacuum or not. It also came with plenty of attachments, dual mode furniture brush, crevice / brush attachment, long dusting brush. All of these are nice to have and no need to purchase any other attachments. The brush on this is different than what I’ve seen on other vacuums, it’s a brush and soft roller combination. I was worried about hair getting caught up in the front roller but noticed there’s a row of teeth that push into the roller to cut/clean things that would get wrapped around it. There’s an access door on the top of the power head that opens and you can easily remove the soft roller to wash and clean, only takes a few seconds to get it out, the brush roller looks to be permanently attached. The maintenance door also makes it extremely easy to clean and clear the power head. When using, this feels self-propelled, especially across carpet/throws, when in carpet mode, almost too much for my wife as pulling it backwards is a little bit of work, “good for me though :) “ . When in bare floor mode the pulling is barely noticeable, just enough to help. The headlight LEDs are a huge welcome, in this day of low power LEDs there’s no reason they aren’t included in all vacuums. Makes seeing the dirt you are going after so much easier, and just how dirty your floors are too :O . The center of the main shaft has a latch that you can press to bend the tube in half, this makes it so easy to get under our king sized bed. And with us having a dog that sheds a lot that’s an area that collects a lot of hair. I found myself using this quite often to get under chairs, coffee tables, desks easily. Converting it to a hand vac couldn’t be simpler, and it works extremely well at that with the crevice attachment installed. You can also plug the power head directly into the main unit without the tube attached “haven’t tried that yet”, but can see where that would work extremely well for cleaning carpeted stairs. I was able to get about 12 minutes of run time out of the battery, “it hasn’t been conditioned yet as instructions say to do” so that may increase. I used a combination of carpet and bare floor settings, plus high power “just long enough to see the difference”. So with two batteries I could probably get close to 30 minutes of run time easily, which is plenty to go over the floors in our 1800sqft house. The filters are extremely easy to get to and fortunately are all washable, which is a big plus. I would be nice if they all came with an extra set so you could wash one set and keep cleaning instead of waiting for them to dry out. I'll be ordering an extra set right away. The main complaints I have are, the power button and mode buttons are all right together, and I found myself accidentally hitting the power button when switching modes quite often. I’m sure I’ll get used to it but wish there was a different setup for that. The dust bin is a little on the small size but it’s easy to empty, and found myself having to empty it half way through cleaning the house. In all though this is a really good choice if you are looking for a cordless vac that has the power of an upright cordless. It works just as good as the other vacuums, maybe a little better at picking up fine dirt than the other two.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great Cordless and Passable Full Size Vacuum

    Posted
    nkpstudios
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    This vacuum is everything I always wanted in a cordless vacuum. We all know Shark products are very innovative and I am so glad this product finally came to market. It addresses many of the issues/inconveniences you find with competitors out there. Below is a quick breakdown on my experience with the DuoClean IF251. Overview This vacuum is solid, but like all handhelds must be lightweight so it is mostly plastic construction. The batteries are build solid too, also encased in plastic. The vacuum will last of you don't abuse it like everything in life. This is a versatile vac with features you won't find anywhere else on the market. Currently at the time of writing this review (9/20/2017), no other cordless vacuum in this tier offers swappable batteries that I know of. No other company offers a wand that flexes for under couches and other hard to reach areas. The "DuoClean" vacuum floor attachment works wonders. It has two vacuum heads for different surfaces offering "multifloor" versatility. Pros +Multiple/Swappable Batteries - This is easily my favorite feature and make it worth buying this vacuum vs others on the market. The batteries charge in close to 3.5 hours maybe 4 hours. There is always another one fully charged to keep you going. The batteries also have lights that tell you how much charge is in the pack. Pretty cool. +Multi-Flex - This is great and a back saver. This feature allows you to "bend" the long wand in half to get under couches and tables without having to bend over. It also makes storing the vacuum easier in the upright position. +Accessories - Accessories, accessories, and more accessories. This package comes with all the attachments you will ever need. There is something for everyone. There is a dusting attachment, power upholstery head, crevice tool, and brush tool to name a few. +Charging Options - This vacuum has two ways to charge. You can charge the battery pack in a "dock" fashion or you can plug directly into the handle. + Duo Clean - Two brush heads with different purposes work together to clean. There is a soft bristle brush more for hardwood and flat floors and the standard carpet brush for shag and other styles of carpet. Awesome cleaning action. + LED "Headlights" - This is another feature I don't see other companies incorporating in their vacuums. It is like having headlights on your vacuum to see if you got up all the dirt in low light situations. +LED indicator lights - There are indicator lights on the battery packs so you never have to wonder how much battery is left. This is not found on any other vacuum that I know of. There are also +Quick Setup - Literally you are ready to go in three clicks including loading in the battery. Best experience in setting up. +Lightweight - It is a little heavier than the other competitors, but to put it plainly, my 3yr old is vacuuming the floors in the house. +Power - This vacuum holds its own in the cordless suction domain. No complaints at all, it packs as much power if not more than what is on the market right now. +Low Maintenance - You really only need to charge batteries, empty the canister, and occasionally clear the brush heads to keep this running. The main thing to do is to keep the filters clean if you want to maintain powerful suction. +Smart Response Technology - You can vary brush speed and suction with carpet mode and hard floor mode. +Versatility - This thing could replace an upright, duster, and any other cordless vac you currently own. It works on floors and carpets easily adapting for either. -Cons- -Lack of Accessory Pouch/Bag - No where to put all the accessories provided. -Weight - A little heavier than other competitors, but that is probably because of the battery. -Duo Clean Floor nozzle - The width is is a little smaller than a standard upright, but you can get used to it. Not a deal breaker, bout a nice to have. Coverage size requires you to clean more which results in battery usage. -Standard battery life - These usage times are pretty much standard right now in the industry. Having another battery makes this an instant workhorse. You can purchase more batteries if you find yourself running out after two charges. Estimated Times: Hand vacuum only in "Max Power" mode: approximately 11 minutes Hand vacuum only in "Extend Runtime" mode: approx. 23 minutes Floor mode in "Max Power": approx. 12 minutes Floor mode in "Extend Runtime": approx. 20 minutes Carpet mode in "Max Power": approx. 11 minutes Carpet mode in "Extend Runtime": approx. 14 minutes -Charge time - It takes almost 4 hours to charge a battery that only lasts 15mins-30mins. It would be nice to get "fast charging" technology from cell phones since they are both Li batteries. -Feels "Self-Propelled" at times - On carpet this things pulls you around. I like it, but some may get tired of fighting this monster vac. -=Verdict=- BUY! If you are looking for a cordless vacuum with power and function, this is for you. It is in the same price range as the competition, but the thing is you get LEDs, swappable batteries, multiple batteries, and ergonomics unique to the industry. Get this rather than other vacuums of the top brand we all know. You will not be sorry.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Cordless with great features

    Posted
    PeboQuattro
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    The Shark IONFLEX is one of the best cordless vacuums I have owned. I enjoy using the vacuum thanks to its lightweight, ease of use, and convenience. Shark provided some great features in what is normally a limited stick-vacuum design. The Multi-FLEX wand has two functions. Increased reach and storing the vacuum with the wand attached. It is convenient that it can be folded down in “storage mode” as you don’t have to worry about it tipping over and it doesn’t require you to mount in on the wall. The vacuum itself turns on/off with a button versus a trigger that other cordless vacuums use, making it easier and more comfortable. It provides two modes of cleaning; extended and max power. Extended runtime is great for everyday cleaning, where as max is for spot cleaning. The Shark does get a little loud while on max. On normal or extend runtime the noise is slightly louder then a higher priced cord free vac I own, but it is tolerable. However on max power, both vacuums run at comparable noise levels. Speaking of modes, expect to get a mere 6 minutes when running at ‘Max Power’, where as extended runtime provided around 30 minutes. The removable battery is a huge improvement over my other cordless. The IONFLEX 2X even comes with a second battery, allowing you to swap it out during cleaning if you need a little more time. The DuoClean brush head is a great design that has worked very well on my tile, wood, and carpet floors. It features a standard bristle brush, as well as a finer soft brush that cleans tile and wood floors. It offers useful features such as a brush roll indicator (status light), tool-less top brush access, bright led lights, and easy removal of the soft brush. The brush head is roughly 2.25 inches tall in the front and increases to around 2.50 inches near the rear. Unfortunately, our kitchen cabinets have a 2.5 inch gap from the floor and the brush head rubs on the bottom of the cabinets; scratching the top of the brush head after one use. Obviously, I am more careful with it now, but the finish is not very durable. My only nitpicks with the device were the exhaust blowing out of the bottom of the handle and the dust bin isn’t removable (without tools), but I feel these are minor annoyances. I think the Shark IONFLEX is a great choice for someone who has multiple floor types and wants a cordless with more features and flexibility. Cons Durability (finish) Dust bin isn’t removable for cleaning Exhaust location Pros Attractive design On/Off button (instead of a trigger) Multi-FLEX wand Storage mode Lightweight Good battery life and includes spare battery Attachments

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Versatile 2-in-1 Vacuum

    Posted
    Kelby
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    Design: Setting up the IONFlex was quick and simple, although it took a while to charge the battery to full capacity. One slight downside to the design is that you will need to find a good spot to store the various attachments, since they do not attach to the vacuum for storing. In my opinion, this is just a minor inconvenience because it is such a small and lightweight vacuum. I like that the vacuum folds for easy storage and stands upright without leaning it against a wall. In addition, I appreciate the ease of emptying the vacuum’s dust bin when it’s full. The IONFlex is well-designed to complement its functionality, performance, and versatility. Performance: Due to this being my first experience with a battery powered vacuum, I will admit that I had some skepticism about how the IONFlex would perform. Its small size and lightweight design added to that skepticism, but that immediately went away when I started using this vacuum. The suction power is very impressive. I do not notice a decline in performance when using it for extended periods of time. It seems to perform great all the way until it is out of battery. The battery lasts quite a while, but there is always the backup battery if you need more time. This vacuum exceeds my performance expectations. Versatility: The IONFlex is one of the most versatile vacuums on the market. Not only is it an effective floor vacuum on both carpet and hard floors, but also an effective hand vacuum for all kinds of surfaces. It converts with ease and not having to deal with a cord is very convenient. I do not know that I can ever go back to a corded vacuum now. Additionally, the various attachments meet almost any vacuuming need. I have used the IONFlex for pet hair, stairs, my car, dust near the ceiling, ceiling fans, and more. This two-in-one vacuum is the definition of versatile. Verdict: You will not be disappointed with the IONFlex. It is perfectly designed to maximize its ease of use, performance and versatility. The convenience of cordless vacuuming will make you never want to go back, and the fact that this can fulfill any vacuuming needs is impressive to say the least.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Big Performance in a Small Package

    Posted
    mstanleynh
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    I have been looking forward to getting the Shark IONFlex DuoClean IF251 vacuum for a while now as I'm sick of dragging my corded vacuum around the house. This vacuum does not disappoint, it's small, light and packs plenty of sucking power into it's small stature. It's also super versatile and can be used as a standard upright vacuum, bent using the MultiFLEX option to easily reach under furniture and also works as a handheld unit for reaching those tough spots like curtains, spiderwebs in the corner...or I used it in my car. Pros: - Size/Weight - vacuum is very small and light which makes for easy handling and also getting it up and down stairs. - Power - this thing sucks! In a good way of course! I used it all over my house and car and really never had to use the Max Power option to pick up dirt and dust. Very impressive for the size of the unit. - Cordless Use - it comes with 2 Lithium Ion batteries that can be charged in the included charging station or in the vacuum itself. So far so good in terms of battery life and performance. - Versatility - Can be used in so many different ways, it's like having 3 or 4 different vacuums! Cons: - Size - the small size does offer some challenges, the dust bin is small and fills up quickly so needs to be emptied often if using it around a larger home. - Upright Position - The vacuum will NOT stand upright on its own, it needs to be leaned against something or folded down to its storage position. - Sound - Although it's much quieter than a standard vacuum, the higher-pitch sound of this unit scared the daylights out of my dog. This may not be a problem for users without pets, but considering this is a "pet" unit, this could pose a problem for some users and their pets. All-in-all the Shark IONFlex DuoClean IF251 is just what I was after in terms of size, performance and quality construction. I would certainly recommend this vacuum.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Lightweight vacuum with lots of suction

    Posted
    Josh
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    I was impressed by the IONFlex DuoClean IF251. It comes packed with a lot of power in a relatively compact and portable form factor. The cordless vacuum unit itself is pretty light and has a decent canister size. The IONFlex 2x portion of the name refers to the two battery packs included with this unit, which is a big plus for a cordless device. The batteries can be charged directly from a power cord while in or out of the vacuum as well as in the included charging dock. The vacuum head comes with two brushes and LED head lights to help see whats on the floor ahead of you or under furniture. The vacuum head comes with two brushes, a soft roller on the front and a brush roll. The main wand attachment that connects the vacuum and brushes is flexible as well. It folds over so you can store the vacuum upright as well as to help bend it under low furniture. Out of the box, it comes with several attachments. There is a pet multi-tool with removable bristles that can be used for cleaning furniture and upholstery. There is also an anti-allergen dust brush and crevice tool with removable brush. Performance: I was able to test out this vacuum across a variety of surfaces. It performed well in each case. When switched into the carpet setting, the brush rolls spin faster, and you can feel the vacuum pull forward when moving it back and forth. The regular extended runtime setting does well at removing pet hair from carpets, but there is also a more powerful “Max Power” setting that increases the brush speed and suction for deep cleaning at the expense of battery life. If you need to reach under furniture, you can press the button on the wand that allows the wand to bend and stretch out flat. On non-carpeted floors or movable area rugs, you can switch the vacuum into the floor setting to slow the speed of the rollers. It did well at removing debris from the floor and under cabinet overhangs. On furniture and upholstery, the pet multi-tool attached directly to the vacuum did well at removing pet hair and crumbs. I also used the handheld vacuum and attachments to clean out my car. It did well at removing pet hair and cleaning the seats and carpets. The crevice tool was helpful in cleaning between seats and hard to reach areas. You will probably find that you need to empty the canister several times in the course of charge, as it is moderately sized to keep the device size and weight down. Fortunately doing so is as easy as pressing a button over a trash can to release a hinged door. If you have a dog like me, you may find you have to pull some pet hair out of the canister that wraps around the filter. Battery Life: I charged one of the batteries completely and ran the vacuum throughout my house. With a mixture of carpeted and hardwood areas on the regular setting, the battery lasted about 18 minutes. So, with 2 fully charged batteries, you can vacuum for over half an hour on normal settings without needing a charge. Depending on how frequently you vacuum and the size of your house, this may be sufficient for you. Care: This vacuum was built to be cleaned and maintained. You can remove the cover over the brush roll to get access and remove strings and hair. The soft roller on the front is removable for cleaning. On the vacuum itself, there are three filters that can be removed to be cleaned with water. You can also wipe out the plastic canister pretty easily. All in all, this vacuum is built to be cared for and kept for a long time.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Powerful, quiet, handy, versatile

    Posted
    Chadwick
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    The Shark IONFlex rep[aces an older cordless vacuum by another manufacturer that I've been using for quite some time and have really loved. The Shark blows the old one away in terms of power and versatility. It is substantially quieter than my old one, the powerhead is smaller (which has its pros and cons depending on your use case), and it is light enough to move around with ease. The vacuum comes with two batteries, which is needed as the advertised life is 11 minutes on max cleaning and 23 minutes on battery saver. In my real world use, these times are pretty close to spot on. As the batteries get some age on them, I expect these numbers to decrease somewhat. I mainly use this machine downstairs in my home which has floor coverings ranging from tile, hardwood and area rugs. It has no trouble transitioning from one to the other. Maneuverability is easy and with the low-profile head, it easily goes under couches, entertainment centers, recliners and kitchen cabinet overhangs. The ability to "flex" the wand lets you get all the way to the wall when going under furniture. The only complaint here is that there is no positive stop or lock with the flex...its either locked straight or freely flexing. I'd like to have seen a mid-way or "all-the-way" lock, but after a couple of uses you can adjust and it works decently well. The handle is relatively long, so if you've got shorter arms, expect the machine to be a good distance in front of you. The seemingly incomplete wand design is why I knocked a star off my rating. Converting to a hand vac takes only a quick press of a button and adding one of the three attachments included in the box--a crevice tool, a dusting wand or a small nozzle (which can be used with or without the brush head as it easily detaches for use on hard surfaces). Emptying the dust bin requires you to remove the hand vac portion and pressing another button. Very simple and intuitive. The bottom of the bin drops open and the dust falls into the can. No muss, no fuss. As I said before, the powerhead is smaller than what I've been used to so cleaning large areas may take a bit longer as you aren't covering as much with each pass. However, the size lets it easily pass between chair legs that otherwise would have to be moved out of the way. That's a plus for me as I'm typically vacuuming around a dining table with 8 chairs, a kitchen table with 4, and several other random chairs placed throughout the various rooms. Not having to move and replace them is a big time saver for me. Finally, I've been impressed by the power of this little guy. It easily pulls dirt, pet and human hair, and whatever else ends up on your floor. It has two rotating heads, one is the standard hard roller with stiff bristles and the other is a softer, dusting-type head. In combination, dirt and debris don't stand a chance.

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Great Flexibility Meets So-So Performance

    Posted
    Jturn
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    After using this vacuum for a couple of weeks, I can safely say that, while this vacuum has an incredible amount of usable flexibility, the so-so suction power means that I'll still rely primarily on my Dyson for most vacuuming duties. Shark has included a lot of extras in this pack. The best of these included extras has to be the extra battery. Battery life is always an issue with handheld, battery powered vacuums, but this issue is largely mitigated by the fact that you can always have one battery charging while using the unit. Great work, Shark. Additionally, the included attachments cover a wide array of uses and is definitely appreciated. Shark has done a great job making this little vacuum flexible. The wand flexes in both directions, allowing you to reach far under furniture when flexing one way, and stowing the vacuum in a compact state when flexing the other way. To go along with this, the hand held function works really well and is easy to configure. There are quite a few attachments that serve a wide number of purposes, but I primarily use the typical wand attachment or the full size head attachment. The handheld configuration using the full size head is a life savor for doing stairs; you get the full suction power of the vacuum in a form factor that's remarkably easy to use. Speaking of suction power, this is an area where the vacuum left me a bit underwhelmed. There are two suction levels on the handle; power saver and full power. Honestly, I found very little use for the power saver mode, save for quick hard floor dustings. Full power mode works well enough, but at the end of the day, this vacuum doesn't have the kind of suction power akin to my yellow Dyson, and as a result, will more than likely be relegated to stairs duty and car cleanup. The vacuum is incredibly flexible and handles a wide number of scenarios, but in the end, the underwhelming suction power leaves this as a secondary vacuum in my household.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great performing vacuum proves cordless works

    Posted
    RonM
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    Having used corded vacuums all my life, there were three main concerns when it came to a cordless vacuum: power/effectiveness, runtime, and weight. All of these are directly related to the fact that you are working off of a battery, as opposed to constant electrical power. The Shark IONFlex 2X DuoClean IF251 Cord-Free Ultra-Light aims to address all three of these concerns head on. First, it advertises more suction power than what I assume is their primary competitor in this space. The DuoClean part of the name refers to its ability to pick up both fine dust and large debris on carpets and floors. Second, it again advertises a longer runtime against the same competitor, and achieves it by including a second battery and a separate charging dock. This is a smart design choice in my opinion because it gives you the longer (combined) runtime, if needed, but reducing the amount of battery weight that needs to be moved at one time. Which touches on the third concern of weight. The design of the IONFlex seems to balance the overall weight so you don't notice it as much. And again, by providing two batteries you don't have the penalty of moving around twice as much battery when you need the longer runtime. In practice, I found that the IONFlex works as well as advertised and successfully addressed the concerns I had. The vacuum seems powerful enough to get the job done; in fact, it practically pulls itself along with you simply steering it or slowing it down to concentrate on specific areas. Little touches like multiple LEDs make for easy vacuuming within dimly lit (or unlit) areas. It maneuvers very easily and can get underneath most low pieces of furniture without any issues. Similar to our corded Shark Navigator, you'll want to empty the dust cup container often for best results. I also like the ability to use the IONFlex as a handvac for the cars. Overall, the freedom provided by the cordless IONFlex is refreshing. It's nice to be able to just pick it up and go, and not have to worry about holding a power cord and relocating it multiple times. The separate outboard charger means I always have a battery charged up and ready to go, although each battery seems to last longer than I expected. A 5-year warranty (2-years for the battery) is great piece of mind, as well. For anyone wondering, the main difference between the IF251 (this model) and the IF252 is an additional cleaning accessory.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    This is the best cordless vacuum I've used!!

    Posted
    stangapds
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    This vacuum is hands down the best cordless vacuum I've used. It solves so many issues and frustrations I've had with other models and is simply a joy to use. Some of the huge pros for this vacuum are: 1) The swappable battery packs! This is a great idea! I hated running out of power while still needing to finish an area I was vacuuming. I can pop the other battery in the vacuum and keep going with no wait! 2) The flex handle, an excellent feature if you find yourself cleaning under furniture. The flex handle allows you to slide the vacuum under a couch without having to get down on the ground to do it, much needed back relief! 3) Multiple cleaning modes with the dual brush head. The dual brush head itself is a major improvement over other cordless vacuums I've used before, plus switching between floor and carpet modes changes the speed of the brush head allow for better cleaning on the surface you're using it on. It's by far the easiest head to clean as well. Simply press the two release latches and the cover pops right off. 4) Fatigue. The handle has a ergonomic grip that feels much better than others I've used. This model also doesn't have a trigger that you have to hold the entire time you're vacuuming, you just turn the vacuum on and get to work. Overall, anyone looking to invest in a cordless vacuum won't be let down by this model. It has multiple batteries, lots of flexibility, and is super easy to clean. I'd recommend this to anyone looking for a reliable cordless vacuum!

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Love it!

    Posted
    FlyingC
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    I've been using a cordless sweeper for about a year now and liked it just fine, but thought I'd try this Shark to 1) see if it's better and 2) have another one to use in other areas of the house. The IONFlex is MUCH nicer than my other vacuum and I'm loving it so far. We have a lot of indoor cats so I'm running a quick vacuum daily to round up the stray litter and hair they enjoy spreading around. It appears to be really well built and seems like it should last a long time. Of course everything is plastic, but it's a heavy duty plastic and doesn't feel cheap like some of them. Some things I'm really liking about this vacuum so far: o It comes with two Lithium Ion batteries which gives me more than enough run time for my areas. o The wheels on the roller head are much quieter and smoother on my floor tiles. o The filtration seems to work perfectly and even litter dust doesn't get through to cause sneezing. o It's super easy to empty the dust bin. o It's relatively quiet on the normal suction setting, but does have a higher mode. o The brush and suction on carpet and throw rugs is very comparable to my full-size floor vacuums. o It folds into a pretty compact shape for storage. o The documentation included is short, to the point, clear and easy to read. o The control buttons are intuitive and easy to access while using it: There's the big power button, but also buttons to switch carpet/tile mode and change the suction power The few minor downsides: o The dust bin is very small so you'll need to empty it a lot (but at least that's super easy) o The 3 attachments it came with are nice, but I haven't figured out how/where I'm going to store them for easy access yet. o It did not come with the pet attachment shown in the manual (the quick start guide shows only the attachments actually included). I really like the design of this vacuum. The main unit reminds me of some sort of scifi laser pistol. The air is sucked into the nozzle in the front, drops debris in the dust bin, goes through several filters, then is exhausted through the bottom of the handle grip. It's a cool design and it works really well. If you're looking for a powerful, compact vacuum I think you'll be happy with this Shark.

    I would recommend this to a friend