Keystone - 12,000 BTU Through the Wall Air Conditioner,EStar,115V, R32Thru-the-Wall - KSTAT12-1D
Stay cool and comfortable with Keystone's reliable air conditioning units, designed to provide consistent cooling even on the hottest days. The Keystone 12,000 BTU through-the-wall air conditioner effectively cools rooms up to 550 square feet while removing 2.5 pints of moisture per hour. Perfect for apartments, living rooms, and more, this unit features a unique remote with a built-in thermostat for precise temperature control. Enjoy money-saving features like energy saver mode and sleep mode, all while staying comfortable at a cost-conscious price.
Features
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Reliable Air Conditioning: Provides consistent cooling for maximum comfort, suitable for medium-sized living spaces.
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Maximum Comfort: Offers 3 cooling modes, 3 fan speeds, and 4-way adjustable air louvers, along with efficient dehumidification.
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Space Saving Design: Wall-mounted installation with easy installation using the included standard universal interior trim kit.
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Smart Remote Control: Remote control with LCD screen displays room temperature and ensures accurate cooling.
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Powerful Cooling on a Budget: Energy-saving features like 'Energy Saver' and 'Sleep' mode help reduce energy consumption while maintaining comfort.
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Lifetime Phone Support: Accessible assistance for the lifetime of the appliance.
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Open 7 Days a Week: Customer service available every day for added convenience.
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Price Match Guarantee: Ensures you get the best deal.
Specifications
| Brand |
Keystone |
| Model Number |
KSTAT12-1D |
| Category |
Air Conditioners / Thru-the-Wall |
| Cooling Capacity |
12,000 BTU |
| Recommended Room Size |
Up to 550 sq. ft. |
| Dehumidification Capacity |
Up to 1.8 pints per hour |
| Technology |
Inverter |
| Energy Efficiency |
27% more efficient than standard window units |
| Fan Speeds |
3 |
| Noise Reduction (Low) |
41% quieter |
| Noise Reduction (High) |
13% quieter |
| Power Cord Length |
6.5 ft. |
| Plug Type |
LCDI plug |
| Voltage |
115V (standard household outlet) |
| Shipping Weight |
86.9 lbs |
| UPC Code |
840148725485 |
| Country of Origin |
CN – China |
Downloads & Manual
What our Experts Think
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Efficient Cooling: 12,000 BTU capacity effectively cools medium rooms (~450 sq ft), matching common search queries like “through the wall AC for living room.”
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Energy Star Certified: ENERGY STAR® rating ensures lower energy bills and aligns with “eco-friendly air conditioner” SEO terms.
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R32 Refrigerant: Eco-friendly refrigerant reduces environmental impact, appealing to environmentally conscious buyers.
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115V Compatibility: Standard U.S. voltage support simplifies installation and reduces returns.
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Space-Saving Design: Through-the-wall installation keeps windows free, ideal for SEO phrases like “space-saving AC unit.”
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Quiet Operation: Reliable, low-noise performance enhances comfort and search relevance for “quiet through-the-wall AC.”
Q&A
Q: What room size is this 12,000 BTU wall air conditioner best for?
A: The Keystone KSTAT12-1D cools rooms up to 550 sq. ft., ideal for living rooms, master bedrooms, and apartments.
Q: What type of installation does it require?
A: This is a through-the-wall air conditioner designed for permanent wall installation (not for window use).
Q: What voltage does it use?
A: It operates on 115V, compatible with most standard household outlets.
Q: What refrigerant does this model use?
A: It uses R32 refrigerant, which offers improved efficiency and lower environmental impact compared to older refrigerants.
Q: Does it include a remote control?
A: Yes. It includes a remote control, programmable timer, multiple cooling modes, and fan speeds for customized comfort.
Q: Is it good for apartments or supplemental cooling?
A: Yes. It’s ideal for apartments, bedrooms, offices, and supplemental cooling, delivering reliable and consistent performance.
Maintenance Tips
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Clean the washable air filter every 30 days to maintain airflow and Energy Star efficiency
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Vacuum condenser and evaporator coils seasonally to improve cooling performance
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Keep the exterior rear grille clear of debris for proper ventilation
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Check wall sleeve fit and insulation to prevent air leaks and energy loss
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Ensure rear drainage openings remain unclogged to avoid water buildup
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Unplug and thoroughly clean the unit before seasonal shutdown to extend lifespan
Damage 
Loss 
Theft 
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