Keystone 8,000 BTU 115-Volt Window Air Conditioner with Heater, White, KSTHW08A
Keystone 8,000 BTU 115-Volt Window Air Conditioner with Heater, White, KSTHW08A
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Keystone 8,000 BTU 115-Volt Window Air Conditioner with Heater, White, KSTHW08A

3.8 stars out of 136 reviews
(3.8)|
136 ratings

Key item features

  • Year-Round Comfort: Reliable 8,000 BTU cooling and 3,500 BTU heating capacity for spaces up to 350 sq. ft.
  • Multi-Functional: Combines cooling, heating, dehumidification (1.9 pints/hr), and fan circulation in one unit.
  • Smart Remote: I Sense remote control displays room temperature and sends signals to the AC unit for accurate cooling.
  • Energy Efficient: Energy Star certified with Energy Saver and Sleep modes to reduce electricity usage.
  • Space-Saving Design: Window-mounted with a minimum window height of 16.5 inches and width of 26.8" to 36".
  • Convenient Controls: Electronic controls with LED display, 3 cooling speeds, 3 fan speeds, and 1 heat speed.
  • Programmable Timer: 24-hour on/off timer for customized cooling schedules.
  • Easy Installation: Includes adjustable, pleated window mounting kit and removable chassis for window or wall installation.
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Current price is $426.00
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Customer ratings & reviews

3.8 out of 5 stars
stars136 ratings68 reviews
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Reviews summary

Pros
  • : Cools large spaces efficiently.
  • : Comes with a remote for easy operation.
  • : Offers good value at this cost.
  • : Keeps the place cool and dehumidified during this season.
Neutral
  • : Can be warm and toasty, but may struggle to maintain consistent heat output.
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Showing 1-3 of 68 reviews

Oct 24, 2025
Walmart customer
Top Reviewer
Item details
Size: 8000 BTU
5 out of 5 stars review

Verified Purchase

It's An Air Conditioner With Heat!

The ac works just fine and I like the fact that it cycles and both the cold and the heat work. It is being used in a small room for the time being and the temp is set to 74 and it seems to be keeping that temp with no problem. It's a little louder than I would like, but it works and that is what counts. One thing that I want to mention. When I installed it and started using it a smell came out of it like it had been in storage for some time. It was an old type smell. Filled the room. I had to use frebreeze to knock it out and I ended up spraying the coils on the ac to help knock out that smell. It seems to have worked. No more smell.

Helpful?4ILEIS82PI1T354607525
Sep 18, 2023
kathryn
Item details
Size: 8000 BTU
5 out of 5 stars review

Verified Purchase

Worth the money

This was bought for my son's room that I added on. He has used this unit now for a couple of weeks. It has had no problem cooling 230sf. I haven't been able to tell much of a change in my electric bill since using this as well. Seems to be very energy efficient. I will update review when we use the heat. So far it has been worth the purchase.

Helpful?4ILEIS82PI1T354607525
reply from Product Expert

Thank you for your positive feedback. We are pleased to hear that it met your expectations.

Aug 25, 2020
Yolanda
Item details
Size: 18000 BTU
5 out of 5 stars review

Verified Purchase

Ac unit

Finally up and running. I wasn't aware that it was a 220. I had to have a 220 plug installed before I was able to use it. Cools my large room very well. Love that's it's both air and heat.

Helpful?4ILEIS82PI1T354607525
reply from Product Expert

Thank you for your positive feedback. We are pleased to hear that it met your expectations.