Keystone 12000 BTU Window AC 115V Inverter Heat Cool
$569.99
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4.7 out of 5 stars with 218 ratings
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4.6 out of 5 stars with 66 ratings
4.7 out of 5 stars with 9 reviews
4 out of 5 stars
28 May, 2025
originally posted on influenster.com

Eficiencia energética
[This review was collected as part of a promotion.] Positive Review of the Keystone 12,000 BTU Inverter Air Conditioner I am extremely satisfied with the purchase of this 12,000 BTU Keystone air conditioner. From the moment I unpacked it, I could appreciate the quality of the materials and the solidity of its construction, which gives me great confidence in its long-term durability. The ease of installation was a pleasant surprise. The instructions were clear and concise, and I was able to have it up and running in no time without the need for professional help. Once turned on, its optimal performance was immediately evident. It cools the room quickly and evenly, maintaining a comfortable temperature even on the hottest days. But what really impressed me is its energy efficiency. I have noticed a significant difference in my electricity bill compared to my old air conditioner, which is a great benefit for both my wallet and the environment. In short, this Keystone air conditioner offers an exceptional combination of durability, quality, optimal performance, ease of installation, and energy efficiency. I highly recommend it to anyone looking for a reliable and economical cooling solution.
3 out of 5 stars
27 May, 2025
originally posted on influenster.com

Cool air
[This review was collected as part of a promotion.] So far the AC blows like I'm in the N.Pole. Haven't used the heat setting but it does work. Ok installation was kinda rocky had to use spaces for the flush wall
5 out of 5 stars
24 May, 2025
originally posted on influenster.com

Great window unit
[This review was collected as part of a promotion.] This window unit is a lot smaller than the old window units that I grew up with. Runs great. The hot and cold functions both work wonderfully. Love the option of the remote control.
5 out of 5 stars
22 May, 2025
originally posted on influenster.com

Easy installation
[This review was collected as part of a promotion.] Choosing the Keystone 450-sq ft Window Air Conditioner means investing in a reliable and efficient cooling solution for your home or office. Its combination of powerful cooling, energy-saving features, and user-friendly design makes it an excellent choice for those seeking comfort and convenience. Whether you're looking to beat the summer heat or maintain a pleasant indoor environment year-round, this air conditioner is a valuable addition to your space.
5 out of 5 stars
22 May, 2025
originally posted on influenster.com

Great ice cold air
[This review was collected as part of a promotion.] This air conditioner is great! It was very easy installation. Everything needed to install came in the box. We have central air but our son’s room always stays hot, so we added this to his room, and it made such a big difference! Low level noise, energy efficiency, plus dehumidifier all wrapped up in one with a remote control added on top of it all! Great product
5 out of 5 stars
21 May, 2025
originally posted on influenster.com

Smoothly, quietly bringing cool air
[This review was collected as part of a promotion.] The unit works like charm. My master bed is hotter than the rest of the rooms in the house. This AC definitely helped cool down my 470 square feet room quickly. It runs smoothly and quietly during the operation. It came with everything you need to install. It has a remote control and comes with batteries as well. It is the first time my husband set it up. It took him about 30 minutes to finish the job.
5 out of 5 stars
2 May, 2025
originally posted on influenster.com

Heat and AC
[This review was collected as part of a promotion.] Get the best of both worlds with this window unit that offer heating or cooling. Inside the box you’ll find everything you need to install quickly and easily.
5 out of 5 stars
28 April, 2025
originally posted on influenster.com

Keystone 12,000 BTU Window Mounted Air Conditioner
[This review was collected as part of a promotion.] Received the air conditioner and immediately installed. It was packaged very well. It took about 30 minutes to install. I live in the south and this time of year it’s warm enough for air conditioning but the nights and mornings are still chilly. As soon as it was installed I turned on the cold air. First, great air flow and super cold air. Second, it is very quiet. I have had window units before and they were very loud. This unit does have supplemental heat. Meaning it’s meant to be operated when temperatures outside are between 41 and 75 degrees….it’s supplemental and not primary heat source. But, it’s perfect for knocking off the chill in the mornings and I could not be happier. The unit also dehumidifies…that is also a plus here in the south! It has a washable filter and comes with a remote. I’m impressed!!
5 out of 5 stars
10 April, 2025
originally posted on influenster.com

Summer must have
[This review was collected as part of a promotion.] Just got this gem today and i am so excited ! Its getting very hot in here ! Its heavy, its huge and its going to provide some good fresh cool air! My parents have the very same one and it is capable to maintain the whole large loving room cool! Its. Ot noisy and even the cats love to sleep next to it!
5 out of 5 stars
7 April, 2025
originally posted on influenster.com

Super Cooling
[This review was collected as part of a promotion.] Really great AC high cool and capacity insulation took a bit of time for me cuz I was not used to it noise levels are low this is going to be a lifesaver to have especially in summer when it gets really hot in California excited