
- Model:KYST242HA SKU:6603642
- Product Name: Keystone – 1,500 Sq. Ft. 24,000 BTU Window Air Conditioner with Supplemental Heat – White
- Discount Price Link: https://www.blazinglydiscounts.com/products/Keystone-%252d-1%2C500-Sq.-Ft.-24%2C000-BTU-Window-Air-Conditioner-with-Supplemental-Heat-%252d-White.html

I recently purchased the Keystone 24,000 BTU Window Air Conditioner with Supplemental Heat, and I am thoroughly impressed with its performance. We have a large 1,400 sq. ft. living room, and this unit keeps the space comfortable year-round. During the summer, it cools the room down quickly, even on the hottest days. The cooling power is amazing—within minutes, the temperature drops, and the entire space feels refreshed.
What really sold me on this model is the supplemental heating feature. As the weather turned cooler, I switched over to heat mode, and it kept the room cozy without having to turn on the furnace. The heat is efficient, and I love the convenience of having both cooling and heating in one unit, especially for those in-between seasons where you need both.
The unit is fairly quiet for its size, and I barely notice it running unless it’s in full cooling mode. I also appreciate the sleek white design, which blends well with the decor. The installation was simple, and the air conditioner fits securely in my window.
Overall, I couldn’t be happier with the Keystone 24,000 BTU Window Air Conditioner. It’s powerful, efficient, and provides year-round comfort with both cooling and supplemental heating. If you’re looking for a reliable, all-season solution for a large space, I highly recommend this air conditioner!