Customer Reviews for Keystone 230-Volt 18,800 BTU Window Air Conditioner with Remote, White (KSTHW18B)
Item # : 24641582
Model # : KSTHW18B
At Keystone, we prioritize your family's comfort. Our heat/cool 230V window air conditioner is designed with versatile supplemental heat when outdoor temperatures exceed 23 degrees Fahrenheit.
- Window air conditioner designed for a room up to 1000 sq. ft. with dehumidification up to 3.8 pints per hour
- 18,800/18,400 BTU cooling capacity / 16,000 BTU supplemental heating capacity
Price is $699.99
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15 reviews
Most helpful positive review
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.
AnnaD
This reviewer received a free product or coupon in exchange for an unbiased review of the product
Reviewed at:
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Posted Mar 6, 2026
Large enough for large areas
This is a great unit to heat or cool a large area. Great for an insulated outdoor building or work space. The noise is okay but could be noisy in a home setting.
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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
This reviewer received a free product or coupon in exchange for an unbiased review of the product
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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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AnaKV
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Posted Feb 27, 2026
Great
Perfect size and great for a medium size room ! Love the heat and cool functions ! Very versatile and easy to use !
I’ll put it in a living room medium size !
I’ll put it in a living room medium size !
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LauraB
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Posted Feb 26, 2026
Best home improvement
This is an amazing AC and heating unit. It was easy to install and I love that I now have both heat and air conditioning in one unit. It’s super efficient and has already been a dream addition to my bedroom
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KarlaT
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Posted Feb 26, 2026
Awesome A/C unit
This is a really great air conditioner for any medium size rooms. Remote control. Assembly was easy. I also like the fact that it has a heating system which is great to use with our wood stove in the winter.
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SaraG
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Posted Feb 26, 2026
Nice!
Not to heavy to pack to the window that it was needed to be installed at. Good instructions and easy enough to follow. Will be great for our humid summers in our garage.
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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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AnyaG
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Posted Feb 26, 2026
Great product
Very nice air conditioner that works amazing but it did come dented. I was really upset about that. But it heats and cools amazing. It is very nice quality and heavy duty!
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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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TammiT
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Posted Feb 24, 2026
Air conditioner
I got my air conditioner and installed so easily. The size is perfect and very easy cleaning. Easy maintenance to clean the filter. It works perfectly. Highly recommend this product for my all year round needs.
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MaddieE
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Posted Feb 24, 2026
Good window unit
This is a pretty quiet unit and is very powerful! I have not got to test the heating capabilities to the max yet but both heating and cooling work pretty well. No complaints!
The setup and install is pretty easy. I like that basically you just need to plug it in once you have the window set up right.
Be sure to measure to ensure this fits right in your window and yo...
The setup and install is pretty easy. I like that basically you just need to plug it in once you have the window set up right.
Be sure to measure to ensure this fits right in your window and yo...
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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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virnart_3314
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Posted May 5, 2025
Works great
I received this influencer promotion to give an honest review about the product. My room has no windows, so I had to put the air conditioning on the wall. This air can be used in windows or walls. The installation was not easy, but it was achieved. This air conditioning helps a lot to cool the bedroom. Since the sun gives direct and with the HVAC, it is not enough to...
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