LG
11,800 BTU Through the Wall Air Conditioner
A window air conditioner rated at 11,800 BTU for rooms up to 550 sq ft. It self-installs in a window.
$549
Live price at SylvanePrice checked Sep 24, 2026
Performance
- Cooling capacity
- 11,800 BTU · 3.5 kW
- Heating capacity
- Cooling only
- Room coverage
- up to 550 sq ft
- Energy Star
- Not published
- CEER
- Not published
- Annual energy (cooling)
- Not published
Noise, size & features
- Indoor noise
- 60 dB(A)about as loud as a dishwasher
- Outdoor noise
- Not published
- Indoor unit
- 24 x 14.44 x 20.13 in
What to watch
- At 60 dB(A) it is louder than 112 of the 119 other window units we list that publish a noise figure.
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 LG 11,800 BTU Through the Wall Air Conditioner
- How loud is the LG 11,800 BTU Through the Wall Air Conditioner?
- 60 dB(A) indoors, about as loud as a dishwasher.
- What size room does the LG 11,800 BTU Through the Wall Air Conditioner cool?
- It is rated to cool a room up to 550 sq ft (11,800 BTU · 3.5 kW).
- Do I need a professional to install the LG 11,800 BTU Through the Wall Air Conditioner?
- No. It is a window unit you can fit yourself, no professional needed. Usually no permit.
Compare the LG 11,800 BTU Through the Wall Air Conditioner head-to-head
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