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Keystone™ 12,000 BTU White Window Mount Air Conditioner
Keystone™ 12,000 BTU White Window Mount Air Conditioner 0
Keystone™ 12,000 BTU White Window Mount Air Conditioner 1
Keystone™ 12,000 BTU White Window Mount Air Conditioner 2

Keystone™ 12,000 BTU White Window Mount Air Conditioner

Model #: KSTHW12A
At a Glance
Keystone's budget-friendly heat/cool 230V window/wall air conditioner is designed with a removable chassis so you can install it either in a window or through an exterior wall. Our two-in-one installation marvel includes an adjustable window kit for convenient window installation.
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$99,999.00Save $NaN

Get to know this product.

  • Special 230-volt/25-amp electrical outlet required (Unit will not work with a standard 115V outlet)
  • 12,000/11,600 BTU cooling capacity / 11,000 BTU supplemental heating capacity
  • Supplemental heat capability provides an additional heat source to your main heat source when outdoor temperatures are above 45°F
  • Designed for a room up to 550 sq. ft. with dehumidification up to 2.5 pints per hour
  • Indoor Noise Level dBA (Hi/Med/Lo): 60.9 / 58.3 / 54.7
  • Electronic controls with LED display allows you to easily select options with the touch of a button
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • Auto-restart saves your settings for when power is restored to the unit
  • Adjustable 4-way air flow direction allows you to easily control the direction of the cool air
  • 3 cooling speeds, 3 fan speeds, and 1 heat speed for multi-seasonal use
  • Programmable 24-hour on/off timer cools on your schedule
  • Energy Saver function conserves energy and saves you money
  • Sleep function gradually increases room temperature after being activated
  • Easy-clean, tilt-out mesh filter with Check Filter alert on the unit
  • Adjustable, pleated window mounting kit included for window installation
  • Minimum window height: 16.5 inches
  • Window width dimensions: 26.8" minimum / 36" maximum
  • U.L. safety listing (SA12388)


Amps (Cool/Heat)5.0/15.2
Watts (Cool/Heat)1100/3450

Misc. Specs

Product Weight (lbs.)84
Width (in.)22.6
Appliance ColorWhite
Depth (in.)23
Height (in.)16.1
Control TypeElectronic Buttons
Cord Length (cm)213.36
Manufacturer Warranty1 Year Parts and Labor
Cord Length (in.)84
Plug TypeNEMA 5-15
Color Finish NameWhite
Number Of Cooling Speeds3 (cool) / 1 (heat)
Air Conditioner TypeWindow or Through-the-Wall
Maximum CFM279
Btu Cooling Rating12000
Recommended Room Size550
Btu Heat Rating11000
Shipping Depth (in.)25
Shipping Width (in.)28.4
Shipping Height (in.)16.9
WarningProposition 65 Warning for California Residents