
Introducing the best through-the-wall air conditioner from Keystone! This 12,000 BTU unit offers supplemental heating, making it perfect for various living spaces like apartments and living rooms. With its powerful cooling capabilities, this modern and energy-efficient AC unit can effectively cool rooms up to 550 square feet. Featuring a quiet operation, this through-the-wall AC with remote control and a programmable timer ensures precise and customized cooling settings. The unit's dehumidification function removes up to 2.5 pints of moisture per hour, providing a more comfortable indoor environment. Stay cool with the coldest AC unit on the market while enjoying easy installation and the convenience of the Check Filter alert system for optimal performance and cleaner air circulation in your home. (Please note: Requires a special 230V electrical outlet)
Q: What is the air conditioner's combined energy efficiency ratio (CEER)?
A: The air conditioner's combined energy efficiency ratio (CEER) is 9.5.
Q: Does the air conditioner have a sleep mode?
A: This air conditioner does have a sleep mode.
Q: What is the maximum room size that this air conditioner can cool?
A: This air conditioner can cool a room up to 550 square feet.
Q: What is the air conditioner's cord length?
A: The cord length of the air conditioner is 78 inches.
Q: How many fan speeds does the air conditioner have?
A: This air conditioner model has three fan speeds.
A: Hi! Thank you so much for your question. This unit is a Through-the-wall installation and not suitable for window installation. Hope this helps. :)

Introducing the best through-the-wall air conditioner from Keystone! This 12,000 BTU unit offers supplemental heating, making it perfect for various living spaces like apartments and living rooms. With its powerful cooling capabilities, this modern and energy-efficient AC unit can effectively cool rooms up to 550 square feet. Featuring a quiet operation, this through-the-wall AC with remote control and a programmable timer ensures precise and customized cooling settings. The unit's dehumidification function removes up to 2.5 pints of moisture per hour, providing a more comfortable indoor environment. Stay cool with the coldest AC unit on the market while enjoying easy installation and the convenience of the Check Filter alert system for optimal performance and cleaner air circulation in your home. (Please note: Requires a special 230V electrical outlet)

Stay cool and comfortable with Keystone's reliable window-mounted air conditioner. This 5,000 BTU window AC unit is perfect for smaller-sized living spaces up to 150 square feet, such as apartments, dorm rooms, sheds, and more. With dehumidification of up to 1.3 pints per hour, it effectively removes excess moisture from the air, providing a comfortable and dry environment. The unit features a unique remote control with a built-in thermostat, which senses the temperature of your location in the room and adjusts automatically for optimal comfort. With three cooling and fan speeds, you have flexibility and can enjoy quiet operation, as low as 52 dBA. Whether you're sleeping, watching TV, or working, the unit ensures a peaceful and distraction-free environment. Maintenance is simple with the Check Filter alert, reminding you when it's time to remove and clean the mesh filter. This helps maintain excellent performance and clean air circulation. Keystone provides a cost-conscious price to ensure you can stay cool and comfortable without breaking the bank. Upgrade your living space with Keystone's window-mounted air conditioning and experience consistent cooling, even on the hottest days. Don't settle for discomfort – choose Keystone for reliable performance and a comfortable environment year-round.

Keep cool and comfortable with our 11,800 BTU Through-the-Wall Air Conditioner, ideal for cooling medium-sized rooms up to 530 sq. ft. Customize your comfort with 3 cooling and fan speeds, while the 4-way air deflection ensures precise airflow distribution for effective cooling, dehumidifying, or air circulation. Save on energy costs with the convenient 24-hour on/off timer and energy saver option, while the auto restart feature guarantees uninterrupted operation during power outages. Additional features include a remote control, trim kit, removable/washable filter, and a check filter alert, making maintenance a breeze. (*Wall sleeve sold separately)

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,000 BTU window-mounted air conditioner can effectively cool rooms up to 350 square feet with dehumidification up to 1.2 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone not only provides a 1-year warranty but ensures that you stay cool and comfortable at a cost-conscious price.
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Thie Keystone brand is a terrible product. I bought this 4 years ago and it died. It was the second one, as first didn't work. Ordered a replacement last week. It didn't blow cold. Now I have to return this 70 lb monster since neither mfr nor best buy will send ups to pick up. I'm buying a different brand and not from best buy s their service was non existent
SueW Posted