Stay cool and comfortable with Keystone's 12,000 BTU energy-efficient window air conditioner, the best AC unit for large room air conditioners. This modern and quiet AC unit is designed for easy installation and effectively cools rooms up to 550 square feet, making it the perfect window and wall-mounted air conditioner for your home. With a convenient window AC with a remote control and built-in timer, you can effortlessly manage your desired comfort level while saving on energy costs. This coldest AC unit also offers up to 2.5 pints of dehumidification per hour, ensuring a comfortable and relaxing environment all summer long. Invest in Keystone's window AC unit for reliable and efficient cooling, and say goodbye to discomfort in your living space.
Q: Does this air conditioner come with a window installation kit?
A: Yes, a window installation kit is included with this air conditioner.
Q: What type of electrical outlet does this air conditioner use?
A: This unit uses a standard 115V electrical outlet.
Q: How much moisture can this air conditioner remove per hour?
A: This unit can remove up to 2.5 pints of moisture per hour with its built-in dehumidification system.
Q: Why is this air conditioner considered energy-efficient?
A: This unit has an Energy Saver mode to help reduce energy consumption and save on electricity costs.
Q: What is the maximum room size this air conditioner can cool?
A: This Keystone air conditioner is designed to effectively cool rooms up to 550 square feet.
Q: Does this air conditioner have a sleep mode?
A: Yes, this unit features a 'Sleep' mode to help reduce energy consumption while maintaining your comfort.
Q: How frequently does the remote control adjust the cooling?
A: The remote control allows for precise cooling adjustments every 3 minutes.
Q: What is the eer of this particular keystone model?
A: Thank you for your question. The EER for this AC unit is 12.0. Thank you

Stay cool and comfortable with Keystone's 12,000 BTU energy-efficient window air conditioner, the best AC unit for large room air conditioners. This modern and quiet AC unit is designed for easy installation and effectively cools rooms up to 550 square feet, making it the perfect window and wall-mounted air conditioner for your home. With a convenient window AC with a remote control and built-in timer, you can effortlessly manage your desired comfort level while saving on energy costs. This coldest AC unit also offers up to 2.5 pints of dehumidification per hour, ensuring a comfortable and relaxing environment all summer long. Invest in Keystone's window AC unit for reliable and efficient cooling, and say goodbye to discomfort in your living space.

Experience unparalleled cooling comfort with Keystone's top-rated 12,000 BTU window and wall-mounted air conditioner, designed to cool rooms up to 550 square feet while efficiently dehumidifying up to 1.8 pints per hour. Utilizing innovative Inverter technology, this modern AC unit eliminates wasteful energy usage by precisely adjusting motor speed to match your desired room temperature, making it 27% more energy-efficient than standard models. Enjoy the peace and quiet with its whisper-quiet operation, and take control with the included remote, energy saver mode, sleep mode, and programmable timer. With easy installation and maintenance features like the Check Filter alert, Keystone offers superior cooling performance and reliability at a budget-friendly price, complete with a 1-year warranty for your peace of mind.

Stay cool and comfortable in your home with the reliable Keystone window and wall-mounted air conditioner. This modern 12,000 BTU unit effectively cools rooms up to 550 square feet, while the 10,000 BTU heat pump provides additional warmth on chilly days. Utilizing innovative Inverter technology, it optimizes energy usage and operates 41% quieter than standard units. With a remote control, energy saver mode, sleep mode, and a programmable 24-hour timer, this air conditioner offers convenient and money-saving features. The Check Filter alert reminds you to maintain the washable filter for efficient operation. With a 1-year warranty, Keystone ensures you experience consistent cooling and heating at an affordable price. Also featuring supplemental heating mode, this unit is designed to keep you comfortable throughout the year, offering peace of mind and the ultimate in home comfort.

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 12,000 BTU window-mounted air conditioner can effectively cool rooms up to 550 square feet with dehumidification up to 1.85 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.
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The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
I purchased this for my son and his family. They absolutely love it! It is small but mighty! I visited their home and they had the unit running. It cooled off the majority of rooms downstairs which made a huge difference since there were records high temps. I am very pleased with my purchase.
Posted by Louloug
Good performer. Well appointed with easy to use controls. Cools efficiently. Fairly quiet.
Posted by Keepingcool
It's a great deal for the price. I bought this for someone else but she is using it and it is working great.
Posted by robbiev427