Customer Reviews for Keystone 115-Volt 8,000 BTU Window Air Conditioner with Remote, White (KSTHW08B)
Item # : 24641580
Model # : KSTHW08B
At Keystone, we prioritize your family's comfort. Our budget-friendly heat/cool 115V window air conditioner is designed to meet your needs.
- Wall-mounted air conditioner designed for a room up to 350 sq. ft. with dehumidification up to 1.9 pints per hour
- 8,000 BTU cooling capacity / 3,500 BTU supplemental heating capacity
Price is $429.99
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21 reviews
Most helpful positive review
Posted Apr 16, 2026
Sooooo helpful!!
This AC unit was such a gift to us trying to cool a small upstairs room in the summertime! Note: the plug doesn’t fit a standard outlet so you do need to make sure you have the correct outlet for this machine to function
LauraG
This reviewer received a free product or coupon in exchange for an unbiased review of the product
Reviewed at:
influenster.com
Posted Apr 16, 2026
Sooooo helpful!!
This AC unit was such a gift to us trying to cool a small upstairs room in the summertime! Note: the plug doesn’t fit a standard outlet so you do need to make sure you have the correct outlet for this machine to function
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CherylH
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Posted Apr 16, 2026
Heat and air all in one
I have sent in a ticket for this because I haven't had anyone available to install it. I didn't notice how hard it would be getting this window off to put it on and I need help and so I'm trying to get someone over to help but haven't been able to yet. I know these work well because I had one similar to this back years ago.
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MelissaW
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Posted Apr 15, 2026
Love
The keystone window air conditioner was a little difficult to install definitely a two man job to get installed and placed correctly. However the air it blows is definitely sufficient and cools down extremely.
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YessyP
This reviewer received a free product or coupon in exchange for an unbiased review of the product
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influenster.com
Posted Apr 12, 2026
Great quality strong cooling, excellent value, and
The keystone 8,000 BTU window air conditioner stands out for its excellent quality and powerful cooling, quickly making any room comfortable. It offers great value for the price and requires minimal maintenance, marking it as a reliable and convenient choice. Installation is simple and user-friendly perfect for everyday use.
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CrystalH
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Posted Apr 11, 2026
Awesome air conditioner/heat it works great!!!!
I received this product from # Influenster and #Keystone for my honest review. I love this air/heat unit air conditioner! It was easy to install and is perfect for these cold spring mornings for heat then later when it’s hot just switch over to air conditioning. It wasn’t too heavy but did have to have a helper to lift it . It has a remote control which comes in handy. ...
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AudreyW
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Posted Apr 11, 2026
Great
This air conditioner until looks very nice and has worked very well for us. It does weigh a lot but we were able to move it around and pick it up to put in the window. The installation was very easy and it seems to be great!
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ShellieG
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Posted Apr 11, 2026
Quiet and cold!
It’s quite and it blows cold!!! My husband absolutely loves it and has it put in right beside his bed. Came in clutch right in time for summer too! Five stars!
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PerlaG
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Posted Apr 11, 2026
Love
We are using this air conditioner/heater for out garage and it was amazing it is not loud what’s so ever the weight is the same as a medium sized cooler the assembly was very easy and self explanatory it cools fast and heats fast as well
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JamieT
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Posted Apr 7, 2026
Great & Powerful AC Unit
This Keystone 8000 BTU 115V window air conditioner with 3500 BTU supplemental heat capacity is a fantastic powerful unit that anyone would be proud to own! It's specifically made for rooms 3505 SQ ft with a window with a Ht 16.5 in & a W 26.8 inches . The adjustable , pleated window mounting kit is included making installation a breeze. It's a very quiet unit with 3...
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AnnB
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Posted Mar 31, 2026
Cool and heat you house all with one unit!
I love how this unit doesn't just cool our house, but it can warm it up too! I frankly never heard of an air conditioner doing that before.
It's very nice looking and has every option I can imagine needing on it, including heat and a remote!
This is a bit heavy for 1 person to lift by themselves, but not impossible. Attaching the louvers was super easy. Then, we just p...
It's very nice looking and has every option I can imagine needing on it, including heat and a remote!
This is a bit heavy for 1 person to lift by themselves, but not impossible. Attaching the louvers was super easy. Then, we just p...
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LucyE
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Posted Mar 24, 2026
Love the heat feature!
This Keystone air conditioner with supplemental heat has been a great addition to our home. It cools the room relatively fast and keeps it comfortable. The supplemental heat feature is a huge bonus too, it’s perfect for those chilly mornings or evenings so you don’t have to turn on the main heat. Installing it was pretty straight forward and easy. It also comes with a h...
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AushlinF
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Posted Mar 14, 2026
Cools quickly
This thing is a BEAST! It cools down quickly and efficiently!!!! It is heavy though, but very easy to install. Easy to turn off and on, cools down a room very fast and stays cool. The room was very comfortable.
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PhoniseD
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Posted Mar 10, 2026
The perfect size easy to install and will cool any
This Keystone 8000 BTU Air Conditioner is the perfect size easy to install offer a lot of features that's easy to understand not too noisy it's energy efficient and will cool any room.
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NimaP
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Posted Mar 7, 2026
Good unit with both heat and AC
It is a solid unit. Not too heavy. Easy enough to install in window. The best is that it is an AC but in winter can give heating capability. Too cold to turn on AC right now but excited to try the AC part of it
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RebeccaB
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Posted Mar 4, 2026
Good buy!
I think this has really good features, installation wasn’t hard at all and it’s built well. I would recommend this to anyone that needs an additional unit.
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KeyV
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Posted Mar 1, 2026
Great so far
We are using this in a small bedroom in my mother in laws home and this week in Texas it has been summer temps. She likes it and it cools the room very easily it was easy to install and she is happy having a cool room again. Would recommend this brand of ac depending on room size this is in a small bedroom.
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JessicaW
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Posted Feb 26, 2026
Really good air conditioner/ heat
Really nice air conditioner gets the room cold quick and has heat as well. Really easy to clean and easy to install into a window. Really good brand!
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MichelleG
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Posted Feb 25, 2026
Works really good!
This unit it great for smaller to medium size rooms. It easily cools the room without taking long to cool it. I tried the heat option as well to test it and it works really well too but feel like it takes a little longer to heat up the room. It was easy to set up and easy to figure out how to use it.
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hollys305_4948
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Posted Jun 4, 2025
It's so great and works so amazing!
Installation was so easy, and it took less than 10 minutes! Seems to be very quiet as well. i can hardly tell it's running unless im in the same room. it's on in. It works so well and cools my entire 900 square foot house! Even on the 89-degree day we just had! I love being able to set the temp, and when it reaches it, it turns off! It's such an amazing unit!
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mamagnd_5988
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Posted May 28, 2025
Easy to setup.
This a/c unit was a snap to get installed. It did take two of us, just to take pressure off the window ledge.
I ended up putting it in my office about 5ft from my desk. Customers comment how quiet it is, and ask me where to get one. I love that it has a remote. My other ones have not came with one. I am thinking about getting a few more units for the office.
I ended up putting it in my office about 5ft from my desk. Customers comment how quiet it is, and ask me where to get one. I love that it has a remote. My other ones have not came with one. I am thinking about getting a few more units for the office.
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