LG · Model LW1224RD
12,000 BTU Window Air Conditioner
A window air conditioner rated at 12,000 BTU for rooms up to 550 sq ft. It self-installs in a window.
$459
Live price at SylvanePrice checked Oct 27, 2026
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Price history at Sylvane
Tracked price is up since Jul 25, 2026
Based on 80 prices we have recorded since Jul 25, 2026, not a market average.
Will it cool your room?
This has more cooling than your 250 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
- 12,000 BTU · 3.5 kW
- Power while cooling
- 990 W (9.3 A at 115 V), about $0.18 an hour
- 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
- LW1224RD
- Indoor noise
- 53 dB(A)about as loud as a dishwasher
- Outdoor noise
- Not published
- Indoor unit
- 23.625 x 15 x 22.2 in
- Outdoor unit
- None
- Refrigerant
- R-32
- Wi-Fi / app
- Not published
- Outdoor unit needed
- No
- Power supply
- 115 V, NEMA 5-15P plug
- Warranty
- 1-Year Limited Parts and Labor
Supply voltage, plug, cooling power, cooling current, refrigerant and warranty are from Sylvane's published specifications for this exact configuration, checked Oct 18, 2026.
Power while cooling: From the maximum cooling draw its retailer lists for this exact model. An hour's cost is at that draw and the US average electricity price of 18.44¢/kWh (U.S. Energy Information Administration, Electric Power Monthly Table 5.6.A (residential average, May 2026)). The compressor cycles once the room is cool, so most hours cost less.
What is good
- Uses R-32 (GWP 675), the low-GWP class new US residential equipment moved to.
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
R-32
Common questions about the LG 12,000 BTU Window Air Conditioner
- How loud is the LG 12,000 BTU Window Air Conditioner?
- 53 dB(A) indoors, about as loud as a dishwasher.
- How many watts does the LG 12,000 BTU Window Air Conditioner use?
- It draws 990 watts (9.3 amps at 115 V) while cooling at full power, per its retailer's specification for this exact model. At the US average electricity price that is about $0.18 an hour; once the room is cool the compressor cycles, so most hours cost less.
- What size room does the LG 12,000 BTU Window Air Conditioner cool?
- It is rated to cool a room up to 550 sq ft (12,000 BTU · 3.5 kW).
- Do I need a professional to install the LG 12,000 BTU Window Air Conditioner?
- No. It is a window unit you can fit yourself, no professional needed. Usually no permit.
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?
Compare windows against the other types on price, noise, efficiency and install.
Buying guides for a window unit like this
The questions buyers ask, answered from live prices and real specs. See where a window unit like this fits.
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