
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.
A: The air conditioner uses a washable mesh filter. It also has a filter indicator light that conveniently notifies you when it's time to clean the filter to ensure efficient operation.
A: The inverter technology in this air conditioner contributes to energy efficiency by eliminating wasted operation and controlling the motor speed to meet the exact power needed to maintain the desired room temperature. Additionally, it enables quieter operation, reducing noise by 41% on low and 13% on high compared to regular window units.
Q: Does this air conditioner have an energy saver mode or sleep mode to reduce energy consumption?
A: Yes, this Keystone air conditioner has both an energy saver mode and a sleep mode to reduce energy consumption. The energy saver mode automatically initiates during Cool, Dry, and Auto modes, while the sleep mode is a separate function that can be activated by pressing the ECO button for 3 seconds.
Q: Does this air conditioner come with a remote control for convenient temperature adjustments?
A: Yes, this Keystone air conditioner comes with a remote control for convenient temperature adjustments. The product description states, "A remote is included so you can control your cooling from across the room."
Q: What is the maximum window opening width and height required for installing this air conditioner?
A: The maximum window opening width required for installing this air conditioner is 36 inches, and the maximum window opening height is 19 inches.
Q: What is the warranty period offered by the manufacturer for this air conditioner?
A: The manufacturer, Keystone, provides a 1-year warranty for both labor and parts for this air conditioner. The warranty covers services and parts, which must be performed by Midea Consumer Services or an authorized Midea servicer.
A: The Keystone 550 Sq. Ft 12,000 BTU Window Mounted Inverter Air Conditioner has a dehumidification capacity of up to 1.8 pints per hour. This means it can remove up to 1.8 pints of moisture from the air in a room up to 550 square feet in size. This can help to reduce humidity levels and make the room feel more comfortable, especially in hot and humid weather.
Q: What is the brand name and model number of this air conditioner?
A: The brand name of the air conditioner is Keystone. The model number is KSTAW12INV.

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.

Discover the ultimate in home comfort with Keystone's modern window and wall-mount air conditioner, designed for easy installation and powerful cooling in large rooms up to 1000 square feet. This coldest 18,000 BTU window AC unit not only provides efficient cooling but also boasts a dehumidification rate of 3.8 pints per hour, ensuring a dry and comfortable living space. Equipped with a quiet operation and a remote control with a built-in thermostat, this energy-efficient window AC unit offers personalized comfort that adapts to your needs. Enjoy energy savings with features like the energy saver mode, sleep mode, and a convenient programmable 24-hour timer, allowing you to customize your cooling preferences and optimize energy consumption according to your schedule. With a Check Filter alert for easy maintenance and a 1-year warranty for peace of mind, Keystone's window-mounted AC unit ensures reliable performance and efficient airflow. Stay cool all summer long with Keystone's best-in-class window AC units for home. (Please note: Requires a special 230V electrical outlet)
| Pros for Keystone - 550 Sq. Ft 12,000 BTU Window Mounted Inverter Air Conditioner - White | |||
|---|---|---|---|
| There were no pros for this product— | There were no pros for this product— |
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.
Got this for our 2 car garage workshop which is insulated but not perfectly. It keeps it cool, is quiet and very efficient. It’s absolutely fantastic. Smart controls too.
Posted by Review
After much research and comparing window AC units, I decided on this one and I am happy with my purchase. This one is definitely more quiet than other models I've had before in the 10K-12K BTU range, which is ultimately why I chose this unit. It doesn't blow air as hard as I would have expected for this size unit, but it gets the rooms cooled down eventually. (I use it to cool a small kitchen, hallways, and adjoining living room which total up to about 500 SF.)
Posted by Ryan
If you going to purchase this item don't bother going through Best buy item came broken through shipping and Best buy was supposed to have a replacement item at the store for me and never called and never did so I am now stuck with a broken air conditioner
Posted by NancyL
