Keystone
8,000 BTU Window Air Conditioner
A window air conditioner rated at 8,000 BTU for rooms up to 350 sq ft. It self-installs in a window.
$279.99
Live price at SylvanePrice checked Sep 24, 2026
Performance
- Cooling capacity
- 8,000 BTU · 2.3 kW
- Heating capacity
- Cooling only
- Room coverage
- up to 350 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
- 18.5 x 13.4 x 15.7 in
What is good
- At $280 it undercuts 33 of the 35 other 8,000-9,000 BTU window units we list with a live price.
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 8,000 BTU Window Air Conditioner
- How loud is the Keystone 8,000 BTU Window Air Conditioner?
- 56 dB(A) indoors, about as loud as a dishwasher.
- What size room does the Keystone 8,000 BTU Window Air Conditioner cool?
- It is rated to cool a room up to 350 sq ft (8,000 BTU · 2.3 kW).
- Do I need a professional to install the Keystone 8,000 BTU Window Air Conditioner?
- No. It is a window unit you can fit yourself, no professional needed. Usually no permit.
Is a window even the right type?
Compare windows against the other types on price, noise, efficiency and install.
Buying guides for a window like this
The questions buyers ask, answered from live prices and real specs. See where a window like this fits.
