Keystone

10000

The Keystone slider/casement room air conditioner is perfect for cooling your room. Designed specifically for horizontal slider or casement windows this unit is the perfect solution for homes without traditional double-hung windows. 3 fan speeds and a 4-way air direction control means you can quickly cool your room or maintain comfort where needed. The unit also comes with built-in dehumidification capability. The slide-in/slide-out washable filter removes dust and odors, and with the built-in filter indicator, the unit will let you know when it's time to clean. Sleep mode keeps you cool and comfortable without keeping you awake. A programmable timer assures that you can have the unit cool during the hottest parts of the day and the energy saver mode gives you peace of mind knowing your home is comfortable, without breaking the bank.

It works great!!! I use it in the basement and the dehumidifier setting is a nice addition. Keeps it cool and works well. Nice product. Anonymous. Sat Jun 06 2026

10000

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. Installed easily through-the-wall, this unit with supplemental heat capacity can effectively cool and dehumidify your room. Perfect for smaller-sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of the room, displays it on the remote's LCD screen, and sends a signal to your AC unit every 3 minutes for accurate cooling. 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.

Wasn't happy they delivered heavy pkg on ground sidewalk instead of on porch.. Laurie. Sun May 31 2026

5000 BTUs

With reliable, window-mounted air conditioning, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This window-mounted air conditioner can effectively cool and dehumidify your room. Perfect for smaller-sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. Engineered with 3 cooling and fan speeds for flexibility and quiet operation (52 dBA on low), the unit ensures that you can get a good night's sleep, watch TV peacefully, or work without distraction. 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.

Second air conditioner i have bought and it works great. Anonymous. Mon May 25 2026

12000

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. Installed easily through-the-wall, this air conditioner can effectively cool and dehumidify your room. Perfect for small to medium sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. 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.

Great. Killernellzyt. Bronx, NY. Sat Jun 13 2026

12000

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This window-mounted air conditioner can effectively cool and dehumidify your room. 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.

This air conditioner is awesome! Works as described and is quiet. House feels so cool now.. Anonymous. Sun May 10 2026

12000

With reliable air conditioning units, Keystone produces consistent cooling and dehumidification to keep you comfortable, even on the hottest days. A heat pump is also included for those chilly days. 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.

This unit has heat and cool functions. It is very quiet and can be controlled via the app including an auto setting with a set temp, making it very convenient to use/ turn off remotely. Good investment!. Anonymous. Wed Nov 05 2025

12000 BTUs

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This window-mounted air conditioner can effectively cool and dehumidify your room. 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.

[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.. Zula1_2311. Wed May 28 2025

10000 BTUs

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. Installed easily through-the-wall, this air conditioner can effectively cool and dehumidify your room. Perfect for small to medium sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. 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. This unit requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V household electrical outlet.

Hawa. US. Sun May 24 2026

22

With reliable dehumidifier units, Keystone produces consistent humidity levels to keep you comfortable, even on the muggiest days. This Energy Star dehumidifier can effectively remove moisture to improve air quality, reduce humidity, odor and damp areas, which is perfect for use in basements, garages, living rooms, and more. Settings include normal, turbo, auto-defrost, and auto-restart which can be adjusted using the the electronic controls on the unit's LED display. This unit features a convenient water tank with Full Bucket alert and auto shut-off to prevent spills and overflowing. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. 4 omni-directional caster wheels allow for easy portability so you can move the dehumidifier quickly whenever necessary. Keystone not only provides a 1-year warranty, but ensures that you stay comfortable at a cost-conscious price.

While only the second day of usage, this Keystone dehumidifier (we bought 2) is quietly running, looks great and is easy to operate. Per the directions, the unit should be run for the first 24 hours. Now the second day, both units are collecting water even with the very low humidity readings showing on the unit. The online order (assisted by a chat person) was very easy; the free delivery in just two days was amazing. I feel very confident when ordering from Wayfair !. Anonymous. Thu Apr 10 2025

18000 BTUs

With reliable, window and wall-mounted air conditioning, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This window-mounted air conditioner can effectively cool room and remove moisture from the air. Perfect for large living spaces like apartments, bedrooms, living rooms, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. 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. For wall installation, you can use an existing compatible wall sleeve or purchase one separately. Wall sleeve not included.

Great sir distribution throughout the house.. Ruth. Sun Feb 08 2026

12000

With reliable, window-mounted air conditioning, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This window-mounted air conditioner can effectively cool and dehumidify your room. Perfect for smaller-sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. Engineered with 3 cooling and fan speeds for flexibility and quiet operation (51.9 dBA on low), the unit ensures that you can get a good night's sleep, watch TV peacefully, or work without distraction. 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.

Great sir distribution throughout the house.. Ruth. Sun Feb 08 2026

With reliable dehumidifier units, Keystone produces consistent humidity levels to keep you comfortable, even on the muggiest days. This dependable Energy Star dehumidifier can effectively remove up to 50 pints of moisture a day to improve air quality in rooms up to 4500 square feet, which is perfect for use in bedrooms, bathrooms, basements, crawl spaces, attics, garages, living rooms, and much more. This dehumidifier for the basement, or any room you place it in, features a convenient 1.8-gallon water tank with Full Bucket alert and automatic shut-off to prevent spills and overflowing, and you'll know when it's time to easily remove and clean the mesh filter from the dehumidifier with the Check Filter alert. Four smooth gliding omni-directional caster wheels allow for easy portability so you can move the dehumidifier for the bedroom, or any room in your home, quickly whenever necessary. Keystone not only provides a 1-year warranty but ensures that you stay comfortable at a cost-conscious price.

Love this! Perfect for the humid area I live in. Helps keep the humidity out of the air inside my home.. Tina. US. Fri Jun 14 2024

With the reliable Keystone 26-inch wall sleeve, you can have peace of mind knowing that your through-the-wall air conditioning unit is working at its best to provide you with consistent cooling, even on scorching hot days. This sleeve is conveniently compatible with all 26-inch wide wall units, making it a versatile choice for your home. Installation is a breeze, as the sleeve can be securely fastened to pre-cast concrete or masonry walls up to 17.75 inches thick. Made with sturdy all-metal construction, it can bear the weight of the wall mounted ac unit and withstand various weather conditions, corrosion, and other elements. Not only does the wall sleeve help insulate the ac wall unit, ensuring efficient operation, but it also acts as a barrier against dust, bugs, and other debris. This safeguard prevents potential damage to the mechanical components, providing added durability and longevity to your cooling system. At Keystone, we prioritize customer satisfaction and support. That's why we provide a 1-year warranty to give you peace of mind and keep you cool and comfortable, all while being mindful of your budget. We are continuously improving and innovating to enhance your home environment. Keystone - where comfort meets affordability.

8000 BTUs

At Keystone, we prioritize your family's comfort. Our heat/cool window air conditioner is designed with versatile supplemental heat when outdoor temperatures exceed 23 degrees Fahrenheit. Please note that this mode is meant to complement your primary heat source and should not be relied upon as the sole heat source. It is important to have a special 230-volt/25-amp electrical outlet for optimal operation (for some models ONLY), as this unit does not function with standard 115V household outlets. Our window air conditioner is equipped with money-saving features such as an energy saver mode, sleep mode, and a programmable 24-hour timer. With the convenience of our Follow Me LCD remote control, everyone can easily adjust settings and enjoy the blissful comfort provided by our unit. Choose Keystone for the ultimate in comfort and efficiency for your family.

Excellent value. Joanne. Jackson, NJ. Tue Feb 24 2026

23200 BTUs

At Keystone, we prioritize your family's comfort. Our heat/cool window air conditioner is designed with versatile supplemental heat when outdoor temperatures exceed 23 degrees Fahrenheit. Please note that this mode is meant to complement your primary heat source and should not be relied upon as the sole heat source. It is important to have a special 230-volt/25-amp electrical outlet for optimal operation (for some models ONLY), as this unit does not function with standard 115V household outlets. Our window air conditioner is equipped with money-saving features such as an energy saver mode, sleep mode, and a programmable 24-hour timer. With the convenience of our Follow Me LCD remote control, everyone can easily adjust settings and enjoy the blissful comfort provided by our unit. Choose Keystone for the ultimate in comfort and efficiency for your family.

Excellent value. Joanne. Jackson, NJ. Tue Feb 24 2026

12000, 1

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This portable air conditioner can effectively cool and dehumidify your room. 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. In addition, the inverter technology makes this unit more energy efficient than standard portable units. 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.

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,500 BTU ASHRAE/5,000 BTU DOE portable air conditioner can effectively cool rooms up to 200 square feet with dehumidification up to 2 pints per hour to remove moisture from the air. Perfect for small-sized living spaces like apartments, bedrooms, dorm rooms, and much more. 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. The included window venting kit makes installation a breeze and allows you to easily remove it when you want to change rooms as well. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone ensures that you stay cool and comfortable at a cost-conscious price.

[This review was collected as part of a promotion.] It’s a perfect size for a small/medium size room even then I open up the door to let it cool off the other room so the house can be cooled off the installation was so simple and easy it’s not very noisy at all my husband and little one can’t stay out the room due to it cooling the room down very fast we love it would recommend and get another one for the living room. Xoxokasi_6359. Sun May 25 2025

50

This dehumidifier can effectively remove moisture to improve air quality, reduce humidity, odor and damp, which is perfect for use in basements, garages, living rooms, and more. Settings include normal, turbo, auto-defrost, and auto-restart which can be adjusted using the electronic controls. This ENERGY STAR dehumidifier helps maximize savings by optimizing energy use while providing maximum efficiency. With a low noise level of 55dB, you can use your unit at all hours of the day. Get a good night’s sleep, watch TV peacefully, and work without distraction. This unit features a convenient water tank with Full Bucket alert and auto shut-off to prevent spills and overflowing, and its Energy Star certification guarantees energy efficient operation, making it a better choice for your wallet and the environment than other dehumidifiers. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. 4 omni-directional caster wheels allow for easy portability so you can move the dehumidifier from room to room quickly whenever necessary.

[This review was collected as part of a promotion.] Setting this up was a breeze. I had to get to know what the buttons meant so I took a look at the users manual first. When I turned the fan on it was not too humid but it's also early in the day. Towards the afternoon when it is hotter the humidity will go up. The air coming out of it is really strong and nice on both low and high. The filter and water bucket areas are easy to get to. The cold air is nice because this room gets very hot due to non insulated windows. Very nice de humidifier. Angelar. Sat Jun 06 2026

This dehumidifier can effectively remove up to 50 pints of moisture a day to improve air quality, reduce humidity, odor and damp areas in rooms up to 4500 square feet, which is perfect for use in basements, garages, living rooms, and more. Settings include normal, turbo, auto-defrost, and auto-restart which can be adjusted using the electronic controls on the unit's LED display. A built-in pump allows for even more convenience so the unit can continuously drain vertically into a sink. This ENERGY STAR dehumidifier helps maximize savings by optimizing energy use while providing maximum efficiency. With a low noise level of 55dB, you can use your unit at all hours of the day. Get a good night’s sleep, watch TV peacefully, and work without distraction. This unit features a convenient 1.8-gallon water tank with Full Bucket alert and auto shut-off to prevent spills and overflowing. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. 4 omni-directional caster wheels allow for easy portability so you can move the dehumidifier from room to room quickly whenever necessary.

[This review was collected as part of a promotion.] The dehumidifier was exactly what we needed for our basement and 3 car garage use. The setup and instructions were simple. Multiple setups for draining. The filter is easy to clean and the bucket holds a large amount of water so you don’t have to dump it constantly. To change the humidity is easy and multiple setting for constant running, set times or even just steady humidity. Lights work well and aren’t obnoxious in the dark and notify you for filter changes etc. best humidifier I’ve had and will probably order another .. Nichellef. Fri Jun 05 2026

10000

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This portable air conditioner can effectively cool and dehumidify your room. 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. In addition, the inverter technology makes this unit more energy efficient than standard portable units. 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.

With reliable dehumidifier units, Keystone produces consistent humidity levels to keep you comfortable, even on the muggiest days. This Energy Star rated dehumidifier can effectively remove up to 50 pints of moisture a day to improve air quality in rooms up to 4500 square feet, which is perfect for use in basements, garages, living rooms, and more. This unit features a convenient 15-pint water tank with Full Bucket alert and auto shut-off to prevent spills and overflowing. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. 4 omni-directional caster wheels allow for easy portability so you can move the dehumidifier quickly whenever necessary.

[This review was collected as part of a promotion.] Efficient and quiet! Works amazing swift to clean moisture from bathroom! Very clean and friendly to use!! So easy and light to move around to different!. Jaqueey_6179. Mon Jan 06 2025