Customer Ratings & Reviews

Works well not particularly noisy and the automatic filter settings make it very simple to use.

This unit is great and really works. It really detects odors in the air and adjust when you have the settings on auto detect. It cleans the air and goes back to a low setting. I don’t have as much dust accumulation as I use too which makes the air cleaner. It’s been a good unit

We have a couple of other air purifiers in our house. A few of us suffer from allergies in our home, and my wife thought they were good investments since the beginning of the COVID pandemic. We were stuck in our house most of the time with our three sons and the purifiers seemed to do an excellent job of taking odors out of our home, but 2 of my sons usually wake up sneezing so we thought another purifier in their room might be a great idea. In comes the new Shark Air Purifier, and I can say that my sons love having this new air purifier in their bedroom. They no longer wake up with fits of sneezing, first thing in the morning, and yes, their bedroom now smells nicer. There has been a noticeable difference in air quality since we set this up in their room. Setup process is super easy. You need to open the side panel to take out the filter and remove the plastic wrap before placing it back and closing the panel again. Once you get it plugged in, you can control it from the very vibrant touch panel or from the convenient remote. It immediately checked the quality of the air, and we set it to auto mode and it started cleaning the air. Within half an hour, it showed that it was now at 100% air quality and has stayed there since, for the most part. It is super quiet, and you can hardly tell that it is on. My sons’ gaming laptops are way louder than this air purifier. They set the remote on their nightstand, but I don’t think they’ve even had to use it since it’s just on auto mode. There is a nice panel on the side of the unit as well, so you can see the air quality without having to walk up to it and look down at the top panel. Again, this has changed my sons’ sleeping and waking routines. They have been able to sleep in a bit more and don’t wake with fits of sneezing. We have a new pup that sleeps with them in their room, and this has also done a wonderful job of making their room smell better. No more pet smell. This is a fantastic addition to anyone looking to remove cooking, pet smells from their home, or anyone who suffers from allergens. An easy recommendation.

Very disappointed. I live in a very dusty area with 2 dogs and also have a fridge I'm getting rid of while redoing the kitchen and I just discovered mold it has when I opened the doors to see if air purifier would pick up the musty smell if any thing that an old fridge has. Nope. The air purifier insist the air quality is 100% clean even though it's right next to it and with the fridge door wide open & smells disgusting. Going back ASAP. In addition to that I had initially put this somewhere else but didn't trust the 100% reading since it was that way from the moment it turned on. I also did a reset on the air filter button since I read to do so and nope. No change. I love my shark vacuum but this thing is a big time loser!

Love it! I set it on auto So I don’t have to worry about it running all day. It senses when air is filthy.

PROS: Aesthetics, thin design choice with back intake fans and side outtake fans, intuitiveness, onboard controls, remote, screen, overall noise, specs, ability to move and clean air. CONS: It beeps, which scares my dog because he is a wimp. AESTHETICS/BUILD/DESIGN: I have this unit inside of my room where I sleep. There are multiple things that I really like about it. The first being that it is compact compared to most other air purifiers. As it has more of a flat design instead of square with the intake being on the backside with fans going out on each side. Which makes it easier to “hide”. There are also handles on each side making it easy to move around due to the lightweight design. The power cord is on the bottom. Second, it has a very modern and sleek look to it. With what appears to be an OLED screen on the front and top. Both displays are very sharp, colors pop, with crisp lettering. The top display has ALL the information you need for the device which is a nice change of pace. Where most other AirPurifiers make you download an app if you want specifics, but with this guy it is all natively on the device. Which I like a lot. On the top left you have all the instructions you need for the device. Such as the four fan speeds (1. Quiet operation, 2. Reducing odors, 3. Reducing allergens, 4. Maximum cleaning). Along with switching the display to show Clean Air (how clean your air is from 0 – 100%), Time To Clean, PM2.5 (number of particles the size of smoke and bacteria), and last PM10 (number of particles the size of dust, pollen, and mold). The clean ratings are as follows Good (85- 100% 0 – 25 particles), Fair (70 – 84% 26 – 80 particles), and Poor (0 – 69% 81 – 430+ particles). The front display mirrors the main top display (clean air, time to clean, PM 2.5, PM10). You can also check filter life that has a rundown on how many minutes are left. I believe they state the filter should be good for 6 – 12 months before needing to replace. To replace the filter is simple. You just remove the back, pull out the filter, put in a new filter, and put back on the back and bam. You are good to go. Third, this device can move some serious air. If you are sitting next to it and change the fan speed you can feel the difference of how much or how little air it is moving. Which I thought was great. It doesn’t get very loud. My measurements were as follows (47 dB low, 49 dB medium, 55 dB high, 62 dB max.). Fourth, the controls are simple and intuitive and all onboard. Going left to right, top to bottom, you have your Fan up/down, Power button, Air Info (which cycles between Clean, Time to Clean, PM2.5, PM10), Auto Mode, Filter Life, Time To Clean Hour Amount up/down, and Brightness (high, low, off). When the lights are off you have a dim power button and light button which doesn’t distract me when in a pitch-black room. Which I applaud as most others get this wrong or don’t think of. It comes with a remote that allows you to do all the things I just mentioned. The remote itself is large (which can be a pro or a con), lightweight, requires moderate pressure to press, with nearly no pre/post travel, and a crisp ending click. It works via IR which means you need to point it directly at the device for it to work. I think they say within 15 feet. Unfortunately, for me there is a jingle every time you press a button on the device itself (physically onboard and with the remote) which can be a good thing. Or if you’re my dog who has an issue with beeps absolutely terrifying. And there is no way to disable this as far as I am aware. Which makes it a con from my point of view. Fifth, it has an QR code on the top right (as a sticker that can be removed) that allows you to download the manual and anything else you need. Which is nice to have onboard yet again. CONCLUSION: I absolutely love this thing. I’ve tried other AirPurifiers but this one is my favorite as I think Shark absolutely nailed it. Which is a common theme for Shark as they not only make great products, but you can tell that they spend a lot of time thinking of little details and getting them right which is what separates them from the competition. For example, if you remove the back (to get to the filter) it will disable the power button so you can’t turn it on. You’ll find little things like that all over this device. Which makes it an easy and high recommendation from me.

Big upgrade over some older purifiers I have. Really pleased so far how quickly it cleans.

So not only does this purifier capture the majority of air contaminants, it does so with surprising range, all while managing to be relatively quiet. Cooking smells, pet odor, candles, everything it came up against it did amazingly well on. I tested this out in a few different scenarios and I can say that it performs great. I ran it in the dining area while cooking and baking more than once and each time it captured most if not all of the various food smells that tend to travel around the home. We don't have great ventilation in the kitchen and are dependent on the above range fan to capture everything and it mostly does a poor to average job to capture odor. This unit renders that fan irrelevant. It handled garlic, onions, and every hard smelling spice or cooking smell. Another test i ran was, I lit a scented candle on a corner shelf and placed this unit a few feet in front of it. It was like a invisible wall existed between the purifier. One side had all the rich smells of flavor and the other, barely a hint of an odor. Just for good measure I sprayed scented Febreze around the furniture and hopped in the shower for a quick rinse. When I came back to check how it did (approx 10 minutes or so) I couldn't detect any aroma in the air. They only was I could tell I had sprayed any Febreze at all was to directly smell the furniture. It cleans well and it does so without making much noise. On max fan speed its quieter than the air conditioning and much quieter than the cooking fan on max speed. The sensors are very accurate and gives lots of information on what type of contaminants its picking up/cleaning. Particle size will tell you what it's picking up. Small dust or pollen all the way to large visible smoke streams. Candle smoke in my case. I trust this unit on full auto to be smart enough to get the job done. It may take a while sometimes. In one baking test I left cookies in a bit too long and the display said 0% air quality 90 minutes to 100% clean and it was right. It could have cleaned quicker if I left it running on max settings but the auto setting used max speed up until around 50% air quality before choosing to run a lower speed. A very impressive tool in the fight against odor. With the almost set it and forget it type of convenience.

Sensor not accurate. Has stayed either 65 or 66% air quality with 15 minutes to clean for days when running on high 24/7. Changing location, cooking, resetting, ect, does not change it. If you’re going to spend this kind of money buy one that actually works as it states it does. And of course it is just past the return window so I cannot take it back.

Looks great but has mediocre purification capability.

This air purifier is easily the best one we've had for several reasons. - The air quality monitor displays on the front so you can see exactly where your air quality is. - Little to no noise; quiet as a mouse - Remote control assistance Past air purifiers were well heard in the house, and we really couldn't tell what it was doing or not doing. For the most part, my air quality stays at 100% but it has periodically made its way down to as low as 67%. It took around 30-45mins to get the air quality back up to 100% so definitely doing its job. Plus, it gives an alert if the filter needs to be changed, as well as a website where we can have air filters on auto replenish. This is our new air purifying brand for sure!

Very sleek design, does not take up a lot of floor space. Easy to use and the remote is a nice feature. Cleared the air in our home (900 sf) in about 2 hours. Auto mode is a nice feature too. We have birds and whenever the fly off of the cage the unit kicks in to clean the dander out of the air! Excellent buy.

We have been very happy with this purifier. It is quiet, and does an outstanding job of clearing the smoke from wildfires out of the air in our apartment. This one unit actually maintains our entire apartment. I love the auto feature, so will turn off when air is good quality and only turn on when quality drops below 80%. This has also greatly reduced the dust and pet dander in the house which has made visiting much easier for our friends with allergies. The only issue we have had, is that at this point in time you cannot find replacement filters. I am hoping that Shark will rectify this soon, I have actually reached out to them and am waiting for response. We have used Shark products for many years and have always been very happy with the quality and this did not dissapoint!

We’ve had the air purifier for a couple of months now. Quiet machine and works well. We’re working on home renovation projects so I am happy to see the air purifier kick on when there is dust in the air. I love the auto feature and opportunity to turn the display off while you sleep. Highly recommend.

============================== >>>>> Bottom Line Up front: <<<<< ============================== The Shark Air Purifier 4 performs does an outstanding job keeping your air clean and odor free. In the time I have been using it; it has handled everything from common cooking odors, pet dander, and even cleaning/clearing out built up smoke from indoor grilling – all at the touch button. The large, easily accessible HEPA filter cartridge is very easy to replace and all of the physical controls are well thought out and easy to read from across a distance. While there are some areas for Shark to improve on, the Air Purifier 4 should be high on your list if you’re looking to get excellent performance and usability – without an astronomical price tag. ================================== >>>>> My detailed thoughts: <<<<< ================================== - Overall Design/Aesthetics: - ========================= I really dig the modern looking exterior shell and dual colorized digital displays. Honestly, it kind of reminds me of a certain popular Pixar character that was also sent to help clean the earth in the future – only now she is now in “Air Purifier” form. Thanks to the reasonable physical size and human readable font of the front display, I had no issues reading the information clear across a room. As much as I liked looking at the exterior, I was also a little worried how the shiny/glossy exterior might hold up over time/and “life” as my 3 kids and 2 dogs will undoubtedly knock it over or scratch it up/mark it up in no time – but so far it has help up well in t hat regard. The unit is lighter than it appears in my opinion, making it super easy to move around, but I guess I was hoping for a little more substantial feeling weight to the design to help reduce tip overs/bump overs as I just mentioned. I also appreciated the built-in carrying handles that are inset along the easier for even easier portability from room to room. Side note, I was not a fan of the super low quality packing tape to secure the power cord to the bottom of the unit for shipping – as is left a nice “oily” tape residue that proceeded to pick up loose hair and dirt on it until I just washed it off with some “goo gone”. - Ease of Use/User Interface/Remote Control: - ====================================== Shark literally “crushed it” here. The Air Purifier 4 was dead simple to use – set and forget it. You only have recall/remember 3 common sense colors – Blue (good), Yellow (not so good, Red (bad) – to quickly determine the quality of the air around you. The icons and menu functions on the top/main control panel were simple, appropriately sized and easy to understand without any kind of major learning curve to get going. The controls are “touch pad” styled, and were super responsive and never froze at any time. The “Auto” setting did a remarkable job of automatically adjusting the fan speed to tackle whatever I was throwing at it, and I never really had to mess with it once I set it up in the corner/room I wanted and turned it to auto. The remote is simple, lightweight and easy to use (a recurring theme here); perhaps a little "too lightweight" - but it serves its purpose. You can access all the major functions and features effortless across all the rooms I tested it out in. If I could improve on it, I would have appreciated a backlight style unit that more closely matched the nice large digital readout on the main unit. - Airflow/Performance: - ===================== The HEPA filter is a decent size and is super easy to access/service. The whole assembly is held in by plastic clips, and the filter easily maintains a nice, firm, even seal all the way around the filter housing perimeter when installed properly. Obviously, the higher the fan setting, the notably higher airflow performance I noted -> however at the higher settings, you’ll definitely hear more “audible” background “fan” noise. I wouldn’t say the “fan” noise is unbearable or obtrusive, but still important to note (as with any fan-based system) – you will hear noise at the highest settings. I never used it in any rooms larger than 14x12, and it never skipped a beat. Obviously, your performance results may vary from mine based on various factors, but I can honestly say this should comfortably cover most medium sized rooms or smaller The Air Purifier 4’s purified air exits out the side mounted exhaust/output fans located along the sides of the unit, and did an excellent job of handling the task of clearing out and cleaning the air in whatever room I was using it in. In my kitchen, it took on cooking stir fry vegetables in a wok – using an indoor electric grill: no problem. Most importantly, it really made a difference in significantly lowering the animal dander when I had family over. One particular family member almost always gets hits with itchy eyes, sneezing, etc – within the first 10 mins of entering our house (I have 2 high shed dogs). With the Air Purifier 4 running, that sane family member actually commented on how they notably felt better and was actually able to spend more time over due the increased air quality that the Air Purifier 4 was putting out. If I had one constructive issue to address, is that the side exhaust fans are fixed and non-adjustable. Since this is a non-oscillating unit, you have to take into consideration what direction you are going to place the unit in the room, relative to the intake and output fans. By that I mean, if you place this unit flush/close to a side wall, you may experience significantly reduced airflow or noise. It would be nice to have “automotive” style adjustment fins or dials to just add a little more flexibility in how/where the exhaust air could be directed. ========================== >>>>> Closing thoughts: <<<<< ========================== I have always regarded Shark as brand that gives you “a lot” of well-designed cutting edge (read: “trending”) tech and appliances with good quality at reasonable prices. The Air Purifier 4 continues on that legacy by delivering where it counts most: performance for the price. You’ll often find similar purification tech and performance on units like these from brands – but they more than likely cost significantly more> Shark has distilled down what you need in a HEPA air purification system into this extremely portable and aesthetically pleasing unit. As an added bonus, they made it dead simple to use and maintain. If I had any recommendation to make to shark, I would probably try to find a way to engineer/build in air flow direction control/vents for the purified “exhaust” fans. It also important to remember to factor filter replacement cost into your buying decisions, and while I am not certain what cost that may amount to in the long run, I don’t think you’d be disappointed with this unit if your in the market for air purification system.

Very easy to install. Helped with my allergies and covers a good amount of sq footage. The automatic sensor is 99% accurate. Only drawback is you can’t have it on as well as a humidifier as activates the sensor and it starts purifying the air.

This air purifier is a bit more complex than ones I got before, but the start-up instructions for this made it quick and simple. It's terrific that it has options for manual operation or auto-sensing so that the fans aren't on full rpm 100% of the time depending on air quality. It does manage to keep dust and pollen under control which help my allergies a lot! The replaceable filter does feel a bit much in price, but it's peace of mind. It's definitely better that I don't have to put up with frequent sneezing/stuffy nose from whatever is brought into the house during the summer. With winter around the corner, a.k.a. Dust and Cold Season, this will be better managed.

Not only has the air quality improved, but also the odor. I leave it on all the time on auto and does a great job of handling a large space

Easy setup and great air quality within minutes. Our dogs sometimes have a bit of a corn chip smell to them and this air purifier really helps knock the stench down. The air purifier is sleek and quiet we just put it on auto mode and forget it. One thing to note if you use a humidifier close to the air purifier it will detect the moisture in the air and cause the fan to run at a higher rate in auto mode.

I had been looking for an air purifier for a long time. I live on a busy street and dust seems to accumulate overnight. Since I have been using this product, the air quality in my house has greatly improved. I highly recommend it. It is quiet, easy to set up and looks great in my home. I especially like the display showing when and how much the air needs to be cleaned.