10 Best Keystone All Air Conditioners
for December 2022

MOOZ's editors select recommendations independently. Purchases made through our links may earn us commissions.

Whether it's the dead of winter or hot, humid summer, staying cool indoors is a priority, especially if you're one of the 2.5 million Americans who suffer from central air conditioning allergies. The best way to ensure your home is always cool and comfortable is with a top-of-the-line air conditioner.

The MOOZ Reviews Lab has been testing air conditioners for years to find the best of the best. We evaluate air conditioners for efficiency, ease of use, noise levels and warranty. We also test cooling power, humidity control, and energy efficiency. Our top picks for the best air conditioners are Keystone air conditioners, which our lab has tested out. Here are some of the best air conditioners to buy in 2022:

1
9.7
SCORE
Keystone Energy Star 15,100 BTU 115V Window/Wall Air Conditioner with Follow Me LCD Remote Control, 15,000, White

Keystone Energy Star 15

by Keystone
What We like

Indoor Noise Level dB (Hi/Med/Lo): 56. 4 / 53. 7 / 52. 5

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Product Features

  • 6. 5-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet
  • Cools a room up to 700 sq. ft. with dehumidification up to 3. 2 pints per hour
  • Energy Star efficiency saves you money on your electric bill (11. 8 EER)
  • 15, 100 BTU air conditioner with removable chassis for window and wall installation
2
9.5
SCORE
Keystone KSTAT08-1C 8000 BTU 115V Follow Me LCD Remote Control Through-The-Wall Air Conditioner, 8,000

Keystone Meats Keystone KSTAT08-1C 8000 BTU 115V Me Follow LCD Remote Control Through-The-Wall Air Conditioner

by Keystone
What We like

FIT: This air conditioner will fit in your existing 24. 5 to 27 sleeve. We it. At 20. 3 D x 24. 2 W x 14. 5 H, we provide the foam seals and installation kit necessary to retrofit your existing sleeve. If you dont have a sleeve, the matching Keystone KSTSLV1 is also available for purchase (sold separately).

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Product Features

  • ENERGY-CONSCIOUS OPTIONS: While there are 3 cooling modes and 3 fan speeds pre-programmed, you have flexibility. The Auto option will automatically ramp up and down the fan speed to keep youre pre-set temperature constant. The Energy-saver mode conserves energy and saves you money by turning off the compressor once your desired temperature is reached.
  • TEMPERATURE SENSING FOLLOW ME REMOTE CONTROL: With a thermostat built into the remote control, say good-bye to uneven room temperatures. The remote makes it easier to control the unit from anywhere in the room and its integrated thermostat signals the AC to cool the space based on where you are.
  • FRONT-ACCESS FILTER: Lets face it. Filters collect dust. With our front-access design, cleaning that dusty filter is a piece of cake. Simply pull it out, vacuum or rinse and dry, and slide back into place. No hassle and no disassembly required.
  • ENERGY STAR-RATED COOLING: With a 10. 6 energy efficiency ratio (EER), this 8, 000 BTU through the wall air conditioner can effectively cool rooms up to 350 sq. ft and dehumidify up to 2. 1 pints per hour. (Product is not suitable for window installation).
3
9.4
SCORE
Keystone Energy Star 25,000/24,700 BTU 230V Window/Wall Air Conditioner with Follow Me LCD Remote Control, 25,000, White

Keystone Meats Keystone Star Energy 25

by Keystone
What We like

Indoor Noise Level dBA (Hi/Med/Lo): 62. 7 / 62. 3 / 61. 7

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Product Features

  • Special 230-volt/20-amp electrical outlet required (Unit will not work with a standard 115V outlet)
  • Cools a room up to 1500 sq. ft. with dehumidification up to 5. 7 pints per hour
  • Energy Star: 10. 3 Energy Efficiency Ratio (EER)
  • 25, 000/24, 700 BTU air conditioner with removable chassis for window and wall installation
4
9.1
SCORE
Keystone KSTAT12-2C 12000 BTU 230V Follow Me LCD Remote Control Through-The-Wall Air Conditioner, 12,000

Keystone Meats Keystone KSTAT12-2C 12000 BTU 230V Me Follow LCD Remote Control Through-The-Wall Air Conditioner

by Keystone
What We like

FIT: This air conditioner will fit in your existing 24. 5 to 27 sleeve. We it. At 20. 3 D x 24. 2 W x 14. 5 H, we provide the foam seals and installation kit necessary to retrofit your existing sleeve. If you dont have a sleeve, the matching Keystone KSTSLV1 is also available for purchase (sold separately).

more infoarrow_drop_down

Product Features

  • ENERGY STAR-RATED COOLING: With a 10. 5 energy efficiency ratio (EER), this 12, 000 BTU through the wall air conditioner can effectively cool rooms up to 550 sq. ft and dehumidify up to 2. 5 pints per hour. (Product is not suitable for window installation)
  • FRONT-ACCESS FILTER: Lets face it. Filters collect dust. With our front-access design, cleaning that dusty filter is a piece of cake. Simply pull it out, vacuum or rinse and dry, and slide back into place. No hassle and no disassembly required.
  • TEMPERATURE SENSING FOLLOW ME REMOTE CONTROL: With a thermostat built into the remote control, say good-bye to uneven room temperatures. The remote makes it easier to control the unit from anywhere in the room and its integrated thermostat signals the AC to cool the space based on where you are.
  • 230-VOLT/20-AMP ELECTRICAL OUTLET REQUIRED: This air conditioner has a 6. 5ft power cord with a NEMA 6-15P grounding plug that will not fit a standard 115V electrical outlet.
  • ENERGY-CONSCIOUS OPTIONS: While there are 3 cooling modes and 3 fan speeds pre-programmed, you have flexibility. The Auto option will automatically ramp up and down the fan speed to keep youre pre-set temperature constant. The Energy-saver mode conserves energy and saves you money by turning off the compressor once your desired temperature is reached.
5
8.9
SCORE
Keystone KSTAT10-2C 10000 BTU 230V Follow Me LCD Remote Control Through-The-Wall Air Conditioner, 10,000

Keystone Meats Keystone KSTAT10-2C 10000 BTU 230V Me Follow LCD Remote Control Through-The-Wall Air Conditioner

by Keystone
What We like

Troubleshooting steps are found in Page 21 of User Manual found under Technical specification

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Product Features

  • 10,000 BTU air Conditioner for through-the-wall installation (not suitable for window installation)
  • 2016 energy star: 10.6 energy efficiency Ratio (eer)|10,000 BTU air Conditioner for through-the-wall installation (not suitable for window installation)
  • Cools a room up to 450 sq. Ft. With dehumidification up to 2.3 pints per hour
  • Special 230-volt electrical outlet required (unit will not work with a standard 115V outlet)
6
8.6
SCORE
Keystone 10,000 BTU 230V Through-The-Wall Air Conditioner with Heat Capability

Keystone Meats Keystone 10

by Keystone
What We like

Designed for a room up to 450 sq. Ft

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Product Features

  • 3 cooling speeds, 3 fan speeds, and 1 heat speed
  • Special 230-volt/20-amp electrical outlet required (Unit will not work with a standard 115V outlet)
  • Through-the-wall installation (not suitable for window installation)
  • 10, 000 BTU cooling capacity/10, 600 BTU supplemental heating capacity
7
8.5
SCORE
Keystone 6,000 BTU Window-Mounted Air Conditioner with Follow Me LCD Remote Control, White

Keystone 6

by Keystone
What We like

Electronic controls with LED display allows you to easily select options with the touch of a button

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Product Features

  • Quiet operation for a good night's sleep (49 dBA on low)
  • Cools a room up to 250 sq. ft. with dehumidification up to 1.5 pints per hour
  • 6,000 BTU air conditioner for window-mounted installation
  • 6.4-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet
8
8.5
SCORE
Keystone 8,000 BTU Window-Mounted Air Conditioner with Follow Me LCD Remote Control, White

Keystone 8

by Keystone
What We like

Electronic controls with LED display allows you to easily select options with the touch of a button

more infoarrow_drop_down

Product Features

  • Cools a room up to 350 sq. ft. with dehumidification up to 1.9 pints per hour
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • 8,000 BTU air conditioner for window-mounted installation
  • Quiet operation for a good night's sleep (52 dBA on low)
9
8.5
SCORE
Keystone Window-Mounted Air Conditioner

Keystone Window-Mounted Air Conditioner

by Keystone
What We like

Temperature sensing LCD remote control allows you control the temperature from across the room

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Product Features

  • Cools a room up to 150 sq. Ft. With dehumidification up to 1.3 pints per hour
  • 5,000 BTU air Conditioner for window-mounted installation
  • 2016 energy star: 12.2 energy efficiency Ratio (EER)
  • 3 cooling speeds, 3 fan speeds, plus auto cool for cooling flexibility
10
8.5
SCORE
Keystone 12,000 BTU Window-Mounted Air Conditioner with Follow Me LCD Remote Control, White

Keystone 12

by Keystone
What We like

Electronic controls with LED display allows you to easily select options with the touch of a button

more infoarrow_drop_down

Product Features

  • 12, 000 BTU air conditioner for window-mounted installation
  • Wattage: 1062.0 watts
  • 6. 4-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet
  • Cools a room up to 550 sq. ft. with dehumidification up to 2. 5 pints per hour
  • Temperature sensing LCD remote control allows you control the temperature from across the room

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