Honeywell - 450 Sq. Ft. Portable Air Conditioner - Black/Silver

Honeywell 12,000 BTU MN12CES Portable Air Conditioner: Control indoor temperatures with this portable air conditioner and balance a humid climate with no-drip Auto Evaporation technology. Use the simple LED power display or convenient remote control to change the cooling, dehumidifying and fan settings.

Air Conditioner Buying Guide
Protection Plan Options

Key Specs

  • Voice Assistant Built-in
  • Recommended Room Size
    550 square feet
  • Air Conditioner Type
  • Auto Shut-Off
  • Sleep Mode
  • Window Venting Kit
  • Hose Configuration
  • No
  • Timer
  • Maximum Airflow Rate
    229 cubic feet per minute
  • Wi-Fi Enabled
  • App-Controlled
  • Remote Control
  • 12000 british thermal units
  • 6500 british thermal units
  • Energy Efficiency Ratio
  • Number Of Fan Speeds
  • Integrated Heater
  • Number of Cool Settings
Honeywell - 450 Sq. Ft. Portable Air Conditioner - Black/Silver - Front_Standard
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Honeywell - 450 Sq. Ft. Portable Air Conditioner - Black/Silver
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  • $549.99
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What's Included

  • Honeywell 12,000 BTU Portable Air Conditioner
  • Remote
  • Flexible exhaust hose
  • Owner's manual

Ratings & Reviews

Overall Customer Rating:
89% of customers would recommend this product to a friend (276 out of 311)


Portable air conditioner, fan and dehumidifier with 163 CFM air flow

Move it from room to room on 4 caster wheels. Includes easy-to-install window venting kit.

Cool up to 450 sq. ft.

12,000 BTU cooling capacity allows you to lower the temperature in a medium-to-large room.

Advanced no-drip technology

The Auto-Evaporation system recycles the moisture in the air to produce a cool, refreshing breeze. It can dehumidify up to 95 pints in 24 hours without generating excess water.

Adjust settings with ease

Use the feather-touch LED display or simple remote control to maintain a comfortable temperature day and night.

24-hour temperature control

Programmable timer allows you to regulate your indoor climate even when you're not at home.

Quiet operation

Watch TV, listen to music and converse at normal levels without noise disruption.

Customer rating

would recommend to a friend



  • Rating: 5 out of 5 stars

    Portable Air Conditioner Honeywell

    • My Best Buy® MemberMember

    I had searched for quite awhile reading reviews after reviews hoping to select the right portable air conditioner to use in Southern California weather conditions. Well this was an excellent choice. Not only was it extremely easy to set up took 5 minuets and it's very easy to move from room to room. It cools my living room roughly 15x20 and kitchen roughly 12x12 in about 10 minuets. I also use wheel it my master bedroom which is only 10x12 which cools in minuets! I have had it for 2 weeks and have used it every day and works beautifully! In fact I'm going to purchase another one just so everyone in my family can enjoy the coolness at the same time! The way my home is set up unfortunately the rooms do not connect well enough to use the one unit. But since I have been so happy with how this unit works I am OK with getting another one. When the unit is on the low setting it is about as noisy as a normal small circulating fan on low. When you run it on high while the air conditioner is fully charging rather than when it turns to fan when correct temp has been detected it can be loud for a small room but not bad at all for my living room, white noise that is totally OK. Temp. is a bit off when you select say 69 degrees it may read more like 66 when really not that cool. But I could careless what the number is as long as I am not HOT who cares! Great unit for the money and I would recommend this over and over again! And for the record I never take the time to give feedback but I thought this unit was worth letting others know! COOL and HAPPY!

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Very satisfied with the performance and quality!

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    When my air conditioner went out in my rental condo, I needed to find a quick solution to keep my tenant cool while I waited for the warranty company to fix the air conditioner. I wanted to make a wise choice with my purchase because, let's face it, these aren't cheap, so I was looking at this purchase as an investment. After several days of endless reviews and searching, I decided on the Honeywell brand and on this model in particular. The unit is very easy to hook up and very easy to use. The unit runs quiet for an air conditioner and doesn't rattle or sound cheap. The item weighs quite a bit, but has a smaller footprint than other models. The built in coaster wheels makes it easy to transport, and let's face it, it feels like a very well built machine. After I get the air fixed in my rental condo, I plan to hook this unit up in my bedroom to run at night and save on energy costs. I'm very happy with the performance of this machine and when I took the temperature of the air that it blows, it registered 38.5 degrees F on my laser thermometer. Overall, very impressed with this machine, the remote control that is included is just an added bonus. If you are looking for a a well built portable AC unit that delivers, then you'll be satisfied with this model.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Very Happy so Far

    • My Best Buy® Elite Plus MemberElite Plus Member

    First let me say that Honeywell tends to have good products & their customer service is very easy to work with. They stood behind their air purifier we bought & replaced it without having proof of purchase. Kudos to them! Now for this air conditioner. Had never bought a portable one before plus didn't know anyone who had one. Looked at reviews & this one had good ones. Just bought an older home where the central AC doesn't seem to be keeping up with the southeast Texas heat on the master bedroom side of the house. Didn't want to mess with gaudy protruding window unit to take away from exterior look. Let me say that couldn't be happier with purchase. Comes with window kit that literally snaps together. Easy easy install. Doesn't look bad from outside. Furthermore, it gets that large master bedroom down right cold at night! Mainly when use it. Before would maybe break a sweat at I'm grabbing for comforter. Only thing I'm unsure of is what electric bill will do. Time will tell. But no regrets on this purchase & would recommend to all. And with 5 year warranty...can't go wrong

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Waste of money

    • Verified PurchaserVerified Purchase

    We bought this unit to cool a 140 square foot room. (We live in Phoenix, 2nd floor, western exposure, room over the garage. It's hot.) The unit is properly installed on level laminate flooring with the exhaust hose straight to an outside window. We had a previous LG unit for 5 years that recently stopped working and read the excellent reviews on this one before buying. Within 3 weeks it started rattling- the face plates on the exterior were all rattling against one another. OK, maybe it rattles. It's past the return date but still blowing cold, so we deal with it. 5 weeks in and the thermostat stops working. It reads 59, the room is 77, it's set to 65. The machine starts grinding and making awful noises and all the while blowing hot air because it thinks the room is 59. Meanwhile we sweat. Best Buy won't return our money and we are in the midst of battling Honeywell to try to get a replacement. The cust svc hours are only 8:30-5:30 EST M-F- inconvenient when we're on PST and the rep wants us to call after the unit has been running when the noise starts- usually between midnight and 4am and wants us to go out and buy a thermometer to hold next to the unit so we can prove the ambient room temperature is not what the thermostat on the unit is showing. They can't promise we'll get a replacement and clearly we won't get our money back. Here's a thought- if it was working right, I wouldn't be calling. I know why this item was on such a good sale- because it's AWFUL.

    No, I would not recommend this to a friend

  • Rating: 4 out of 5 stars

    Made our lives better

    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    After living in Boston for several years without an air conditioner, we finally had enough and purchased this AC at the beginning of this summer. We've had a great experience with it so far in terms of how well it cools our 1-bedroom apartment. It was pretty simple to set up, though I wish the hose were longer. Yes, it's is "noisy" but not really any more so than a window unit. One star docked for the fact it came to us without the full window kit, and dealing with Honeywell customer service was not exactly a treat. I contacted them asking to send the part, they said OK and told us when it would arrive. It didn't arrive and I asked for an updated estimate, at which point they told us they never sent it because shipments weren't going out from the day I asked for the kit to the day it was supposed to arrive. Why not tell me this up front, or when you found out there would be a delay? Then it turned out the window kit needed to be signed for (I was never told this until the unsuccessful delivery attempt), so I had to take a day off work to receive it. We love our AC now that it's in, but I dread ever having to deal with Honeywell again.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Quiet - Works Great - Add a Vornado Air Circular!


    12,000 BTUs or 1 Ton of Air Conditioning I am cooling a bedroom where it is and using a Vornado Air Circular to move the air into my adjacent living room. Temperature in the Living room is averaging about 4 degrees F. higher than the bedroom that is really cool. My 3.5 ton central air went out and this is a stop gap before investing in a new central air at about $6,500+ I have ordered the newer replacement that is 14,000 BTU or just under 1.2 tons. It will be placed in the dinning room along with another Vornado Air Circular to move the air into the living room. I'm guess then the living room will be about 2 degrees F. higher than my bedroom or dining room. So for a little over $1,000 compared to over $6,500 I can wait until towards winter when better central air deals are to be hand. I added this last year about 15 to 18 inches of blown in insulation that is making an unbelievable difference in power use. This gives me time to better figure out and plan my new ac system. Better air flower is of a main concern and needs some good engineering planning. When I get my new ac system then these 2 will make for great emergency back ups. My experience with ac units is they only break down when the air is the hottest. Hope this helps. Note: I choose just the ac unit and not the heat pump for where I live and I like to keep things as simple as possible.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Cool as a cucumber!


    Tried to find a portable unit to cover a large area. Our living room is 12' x 17' and our kitchen area is 12' x 17'. There is also a staircase and a hallway. This unit is FAST to cool and is more than adequate for this large open area! Sometimes it is actually too cold! There is noise accompanying it but with a small rug placed underneath it (we have hardwood floors) it cuts the sound in half! Shipping was exceptionally fast! *****caution*******Our first unit came damaged right out of the box. The window kit was cracked on arrival. The placement inside this box is NOT conducive to not being damaged. Honeywell needs to address this! Had to bring unit back to our Best Buy for a swap out. (Inconvenient considering we had free shipping)! This is a heavy unit! Very happy so far! To be honest, I think if we open up all the adjoining rooms it may take care of the whole downstairs living area! We have the 12,000 BTU unit.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Does the Job

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    We installed this in our master bedroom on the upper floor--faces west and gets the hot late afternoon sun. We have central AC but after a hot day a little extra cooling boost is needed. The Honeywell works great. We turn it on about 8:00/8:30pm and let it run until 9:30/10:00pm--usually about 90 minutes. We haven't had a days-long heat wave to content with so far this summer (2014), but we would keep it on all night if we needed to. We could tolerate with the AC noise level--and we are somewhat noise sensitive people. Cools the master bedroom very well. Note: We have the 14,000 BTU model in our art studio (a room without AC) and the unit works fine. It was easy to install. The only issue is that the window fit could be better. We bought duck tape to seal the fitting. Also--and this is a general comment more than a negative on this particular Honeywell--I am always looking for a quiet running machine. This is quiet for an AC but I wish the manufacturers would come out with a whisper quiet one--perhaps one with a super low fan setting.

    I would recommend this to a friend

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