Kissair

12000BTU U-Shaped Window Air Conditioner Cools Up to 550 Sq. Ft with White Panel

(40)

$449.99

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  • Full View & Ultra Quiet: This air conditioner window unit features an innovative design that places the noisy compressor outside, reducing the operating noise to a mere 50 dB for a peaceful environment. It allows you to enjoy unobstructed window views and fills your space with natural light, saying goodbye to blocked windows and hello to a brighter, quieter home.
  • Powerful & Rapid Cooling: With a 12000BTU cooling capacity, this sliding window air conditioner quickly cools rooms up to 550 square feet, adjusting the temperature between 62°F and 86°F. Ideal for living rooms, bedrooms, apartments, and offices, it offers 6 modes, 3 fan speeds for customized comfort.
  • Easy Installation: Installing this window AC is a breeze. All necessary accessories are included, and no extra bracket is required. It fits single - hung and double - hung windows, with a minimum opening of 16", a width range of 24" to 48", and a maximum window sill height of 11", ensuring a secure fit without slipping concerns.
  • 3 in 1 Multifunctional Comfort: This 3 in 1 U-shaped AC window unit provides cooling, dehumidifying, and fan functions. Use the cooling mode in summer for rapid chilling, the dry mode on damp days to remove excess moisture, and the fan mode in spring or fall for a gentle, fresh breeze, keeping you comfortable all year round.
  • Energy - Saving & Smart Control: Save on energy with 3 modes (Timer, Energy Saver, and Sleep mode). Control the unit easily via the touch panel or remote. The washable filter helps maintain peak performance and high - quality air, offering both convenience and efficiency.

Color: White
Cooling Capacity (ASHRAE): 12000 BTU
Cooling Capacity (SACC): 8100 BTU
Suitable Area: 550 sq. ft
Product Dimensions: 28.94"D x 18.7"W x 14.96"H
Mode Options: Cool, Dry, Fan, Auto, Sleep, Energy Saver
Fan Speeds: High, Low, Quiet
Temperature Range: 62°F-86°F
Timer: 1-24H
Noise Level: 45 dB
Item Weight: 68.34 lbs
Window Width Range: 24"-48"
Min Window Opening: 16"
Min Clearance of Height: 12"
Min Clearance of Depth: 8"
Suitable Wall Thickness: 5"-9.4"

$449.99

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10000 BTU & 12000 BTU U-Shaped Window AC Comparison

Compare all 4 models at a glance.Cooling range from 450 to 550 sq ft.Available with 6 working modes and full window view design.Find the perfect window air conditioner for your space now!

10000BTU U-Shaped Window Air Conditioner Cools up to 450 Sq. Ft with White Panel
10000BTU U-Shaped Window Air Conditioner Cools up to 450 Sq. Ft with White Panel

$429.99

12000BTU U-Shaped Window Air Conditioner Cools Up to 550 Sq. Ft with White Panel
12000BTU U-Shaped Window Air Conditioner Cools Up to 550 Sq. Ft with White Panel

$449.99

10000 BTU U-Shaped Window Air Conditioner Cools up to 450 Sq. Ft with Black Panel
10000 BTU U-Shaped Window Air Conditioner Cools up to 450 Sq. Ft with Black Panel

$429.99

12000 BTU U-Shaped Window Air Conditioner Cools up to 550 Sq. Ft with Black Panel
12000 BTU U-Shaped Window Air Conditioner Cools up to 550 Sq. Ft with Black Panel

$469.99

Color of Panel

White

Cooling Capacity

10000 BTU

Coverage Area

450 sq.ft

Color of Panel

White

Cooling Capacity

12000 BTU

Coverage Area

550 sq.ft

Color of Panel

Black

Cooling Capacity

10000 BTU

Coverage Area

450 sq.ft

Color of Panel

Black

Cooling Capacity

12000 BTU

Coverage Area

550 sq.ft

❓ Product FAQs –Window Air Conditioner (A5418W-12K)

This 12,000 BTU U‑shaped window air conditioner is designed to efficiently cool spaces up to ≈ 550 sq ft, making it ideal for larger rooms like living rooms, master bedrooms, and open‑plan areas.

The unique U‑shaped design lets you install the AC while keeping the window open or closable — letting in natural light and fresh air even when the unit is in place.

Most U‑shaped window ACs offer multiple functions such as:

✔ Cooling

✔ Dehumidifier

✔ Ventilation/Fan

✔ Sleep/Timer settings

✔ Multiple fan speeds

These help keep your room comfortable in various conditions.

Yes — with smart inverter technology (on similar models), this type of AC is more energy‑efficient, using up to ~35 % less power than some traditional window units, which helps reduce energy costs.

Many models operate quietly, with noise levels as low as ~32 dBA — comparable to a quiet library — making them suitable for bedrooms or living spaces.

Yes — these units generally come with all installation hardware needed for standard double‑hung or sliding windows, such as brackets and adjustable panels, for quick and stable installation.

  • 5 stars: 32 (80%)
  • 4 stars: 5 (13%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (3%)
  • 1 star: 2 (5%)
L
Larry Sturm

Much better than the old style window air condition.

S
Sayuri

I bought this air conditioner because I wanted something that cooled well without being too noisy, and I was truly surprised. It cools quickly, especially in medium-sized spaces (my living room is about 500 sq ft), and you can feel the difference in just a few minutes. Also, the U-shaped design lets more light in through the window; it doesn't feel as enclosed as with other traditional air conditioners. What I liked most is that it's much quieter than other models I've owned. The compressor noise is practically outside, so you can barely hear it inside the room. It also comes with a remote control, timer, sleep mode, and dehumidifier—all very easy to use. As for energy consumption, I found it quite efficient. I haven't noticed a significant increase in my electricity bill, even when using it for several hours a day. It has eco and sleep modes, which automatically adjust the power when the room is already cool, and that helps a lot in saving energy without sacrificing comfort. Overall, I do recommend it: it's practical, modern, and does its job perfectly. If you're looking for an air conditioner that doesn't block the entire window, is quiet, and doesn't use too much energy, this model is a very good option.

S
Smiling

The weather was hot few days ago, so I have tried it out. The most I like is quiet– much better than my previous one – only a slight fan noise, which won't disturb my sleep. The outdoor compressor is isolated outside the window by a U-shaped structure once I closed the window. Quiet is not the only advantage; the cooling is also powerful, easily handling the bedroom. Plus, installation is quick and easy. If you're sensitive to noise in your home, this is definitely worth considering.

P
Penny Massey

Easy to set up and works great in our space. Our manufactured home was kept at 72 while it was 92 outside and it wasn't even set on high.Very satisfied and a recommending it to my family.

M
Marita

Its great !! Love it ...perfect for my bedroom...it will get me through till my house ac can be repaired

C
Charles

I live across the street from Lake Ontario so I get to keep my view without sacrificing the comfort of air conditioning. Well done whoever made it.

D
Donna

Love it

K
K

Wow, I'm super impressed by this AC unit! At 12,000 BTU, this window AC does an excellent job cooling medium-sized spaces. It’s more than capable of handling up to around 500 sq ft, and the performance is noticeable right away, especially in my entry hallway that tends to trap heat.

The design is a big improvement over standard units. It feels much more stable once installed, and the U-shape style helps reduce noise significantly. Compared to the window unit I just replaced, this one runs much quieter, which makes a huge difference if you’re using it in a living space or bedroom.

Installation is straightforward, though the unit is heavy, so having an extra set of hands helps. I did it alone without any trouble and I'm a lady, but if you've never installed a window unit before ask someone to help you. It comes with the necessary foam pieces to create a good seal, and the adjustable components make it easier to level and secure.

The controls are so easy to use, and the remote is intuitive. Features like the energy-saving mode and removable, washable filter add to the convenience.

A strong performer with thoughtful design and noticeably quieter operation than traditional window units. I installed in my slider windows using a glass filler above it, which looks pretty nice and works out perfectly!

A
ABC123

Allow the unit at least a day to settle. There are arrow indicators and anyone who knows anything about compressors is that they do not like to be on their side. Obviously UPS did not get that memo, having it arrived convenient for a hand truck. Ughh. Let that oil settle. Unpacking is really a 2-person job, as is the installation. Keep all the packing material as well, since that extra foam may be something you need. There are stiff foam blocks and soft strips. Those firm blocks are used to create a level platform for the saddle in the window opening. I’ve seen phots of installs where the unit was at the top of the window, but this is a heavy unit, so I’d stick to the window sill and fill in the holes with foam. There are stiff PVC tubes for shipping, but these could be useful to provide some rigidity as you install and level the unit. Measure twice, cut once. This may be easier to install where you have access to the backside and the leveling supports. Again, there are metal rods in the packing that you can repurpose here. The more support you can give the middle of the unit the better. The more time you take making sure you have a good seal the better as this prevents bugs from getting in. You can attach a foam strip to the top of the unit, where the window contacts the unit. There’s also a stop of sort that functions to prevent someone from coming in through the open window. Use that. Keep things level, and a small spirit level is included. The remote is the main way I plan to control the unit. Note that there is a weep hole on the inside, so find a small drip cup to catch that evaporate water, which is inevitable. If you leave this plugged and it gets full, you get a message that it’s Water Full. Let the outside manage itself. The unit is super quiet, not what I expected for a large capacity unit. Works on regular 110v power, and the plug itself contains a breaker. Do not try too circumvent that grounded plug. The control panel has mostly white indicator lights. You can use the control panel or the remote. Because the remote provides all the functions I need, I did not test the WiFi part. There’s a support website and QR codes as well. Yes, this is heavy, use a friend, but the effort will be worth it with drier and cooler air this year.

r
ricky

Great!The manual was clear, so installation wasn't hard at all. I tested the cooling function once in my bedroom and it brought the temperature down much faster than I expected.I also like that I can run the dehumidifier even when it's not that hot outside. It's been really useful lately.The unit itself feels sturdy and well made, so I'm hoping it'll last a long time. Definitely worth it.

H
Homer3D

This 12,000 BTU U-shaped window AC works great while being mostly silent. Let's face it, it is an AC unit it is not going to be completely silent. I do like the U shaped design so you don't have this bulky AC unit taking up most of your window. I also think it helps block a decent amount of the noise because the other half of the unit is behind the wall. I have it installed in a small living room window and it does a great job keeping the living room cool and most of the kitchen and dining room. My house is not large (roughly 1200 sq ft) so it does cover most of the common areas but doesn't quite reach the bedrooms, which I expected to be the case. Installation is pretty straight forward but I highly recommend having 2 people. One on the inside to pass the AC unit to the other person outside. Then you can both lower it slowly onto the window sill. I was a little worried that that 'clamps' would put too much concentrated pressure where it pushing against the house so I added a small board to distribute the force. I am not sure if this is needed but it was more peace of mind for me.

It is not quite summer time here but temps did reach almost 80f outside and inside was still comfortable at 71f. I tested the AC unit and it was able to bring the internal temps to 66f rather quickly so I have high hopes for it when we hit triple digits here in a few months.

Overall, I am happy with the unit and I might be up the smaller 10 BTU one for the bedroom.

B
BGood

I received this unit a couple weeks ago and I had been hoping the weather would stop being completely frigid so that I could set this air conditioner into the window and demonstrate it. I decided to just unpack it and test it so that I could write the review, but not completely install it since I'm still using heat in my part of the country. The unit comes in an outer box with strapping on the internal packing. Get a friend to help you pull the box off. The unit is heavy, but the delivery man hauled it up to my porch by hand by himself and I'm able to lift it by myself - and hauled it up to the 3rd floor once it was out of the package by myself. It's bulky. You'll be more comfortable with a helper. The unit has spacers that support the whole thing so you don't bend the window sill. Then outside there are two knobs which you'll turn to push against the house on the outside to level it. I've set the unit on a console table so that you can see the knobs you'll need to adjust. Make sure they're fully retracted before you try to put the unit in the window. You'll probably need the clearance space. I'm was a little concerned about that piece because I thought the window was going to be tight around the unit and it's on a 3rd floor window. You should consider that requirement in your plans. They include a spirit level so you can level side to side and front to back. When the unit is running it will collect moisture inside the part inside the house. On the lower left front there is a drain plug to drain it every so often. The unit is, of course, ETL listed and it can be looked up on Intertek's site. It's also energy star rated and while there is a sticker on the outside box, there's another included with the manual. The manual itself is mostly safety warnings, but it does inform on some of the error messages you might encounter. The front of the unit opens up and the air particle screens are a type that fold underneath the unit. I've pulled one of the two forward so you can see what I mean. It has a sleep function, which helps keep it quiet since the compressor part is outside the window and segmented. I found the whole unit to be very quiet for an air conditioner. The fact the compressor is outside does make a difference so that you mostly hear the fan. I always found the window units were quieter than the floor models anyhow. Testing the cooling worked well. It got very cold very quickly. This seems like it is going to work really well for the room I'm putting it in.

J
Joseph Trotta

really nice unit, The blocking they give you for the windows works really well

M
Mitchell Kinney

So far working great

B
B.S.

Tried to contact seller to return item. One message to confirm purchase and no response in 3 weeks. I can’t use it in my existing windows.

J
Jason Rauch

Easy to install. Don't like the touch screen with unit so low dogs shut off brushing against it. Also I get a 00 fault at least everyday I have to unplug for 5.secs to clear.

S
Sharon Stacy

Love it!

R
Ronald and Vicki Austin

So far has worked fairly well... it was super heavy to put in and took two of us..... it doesn't seem to shut off by itself when getting to the temperature we choose and it doesn't cool even the whole living room.... but it at least gets to the couch area.... Our mobile home is small and the kitchen and living room are open.... we don't expect cooling to happen down the hall but did expect it for living and kitchen..... a LOT of money for an air conditioner that only cools about as much as a portable one that costs less than half.... but it is what it is... and it works so we can't complain... I guess....

J
Jason Morris

We absolutely love the unit we purchased and it was very easy to install - would highly recommend.

A
Anonymous

Grate room a/c

B
Bryan

Not as good as advertized. Smaller units produce the same amount

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