Keystone
14,000 BTU Through-the-Wall Air Conditioner with Heat
A window air conditioner rated at 14,000 BTU for rooms up to 700 sq ft. It heats in winter too and self-installs in a window.
$679.99
Live price at SylvanePrice checked Sep 24, 2026
Performance
- Cooling capacity
- 14,000 BTU · 4.1 kW
- Heating capacity
- Yes
- Room coverage
- up to 700 sq ft
- Energy Star
- Not published
- CEER
- Not published
- Annual energy (cooling)
- Not published
Noise, size & features
- Indoor noise
- 56 dB(A)about as loud as a dishwasher
- Outdoor noise
- Not published
- Indoor unit
- 24.2 x 14.5 x 20.3 in
Installation & the rules that apply
This is a window unit. No EPA Section 608 technician is needed: the refrigerant circuit is factory-sealed and never opened. A plug-in window unit needs no permit, so the friction is with your building rather than the government. Many HOAs restrict window units on appearance grounds, though an HOA regulating how you mount one stands on much firmer ground than one banning cooling outright. Landlords can set conditions, and the falling hazard is taken seriously: New York City, for instance, requires window units to be supported by brackets or mounting rails, and many building insurers and HOAs now require a bracket regardless of city.
Plug and play
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Common questions about the Keystone 14,000 BTU Through-the-Wall Air Conditioner with Heat
- How loud is the Keystone 14,000 BTU Through-the-Wall Air Conditioner with Heat?
- 56 dB(A) indoors, about as loud as a dishwasher.
- What size room does the Keystone 14,000 BTU Through-the-Wall Air Conditioner with Heat cool?
- It is rated to cool a room up to 700 sq ft (14,000 BTU · 4.1 kW).
- Do I need a professional to install the Keystone 14,000 BTU Through-the-Wall Air Conditioner with Heat?
- No. It is a window unit you can fit yourself, no professional needed. Usually no permit.
- Does the Keystone 14,000 BTU Through-the-Wall Air Conditioner with Heat heat as well as cool?
- Yes. It also heats.
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