LG · Model LW1223HRSM
12,200 BTU Smart Window Air Conditioner
A window air conditioner rated at 12,200 BTU for rooms up to 550 sq ft. It self-installs in a window.
$599.97
Live price at Electronic ExpressPrice checked Oct 27, 2026
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Will it cool your room?
This has more cooling than your 150 sq ft room needs. It can short-cycle and leave the air cool but humid.
At a glance
Best for renters and rooms where you cannot install a fixed unit.
Performance
- Cooling capacity
- 12,200 BTU · 3.6 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
- Model number
- LW1223HRSM
- Indoor noise
- Not published
- Outdoor noise
- Not published
- Indoor unit
- Not published
- Outdoor unit
- None
- Refrigerant
- Not published
- Wi-Fi / app
- Not published
- Outdoor unit needed
- No
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.
Self-fit, no pro needed
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Common questions about the LG 12,200 BTU Smart Window Air Conditioner
- What size room does the LG 12,200 BTU Smart Window Air Conditioner cool?
- It is rated to cool a room up to 550 sq ft (12,200 BTU · 3.6 kW).
- Do I need a professional to install the LG 12,200 BTU Smart Window Air Conditioner?
- No. It is a window unit you can fit yourself, no professional needed. Usually no permit.
Compare the LG 12,200 BTU Smart Window Air Conditioner head-to-head
How LG compares with other brands
Both lineups at every size both brands sell in stock, with live prices, ratings and the warranty each listing states.
Is a window even the right type?
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Buying guides for a window unit like this
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