LG LW2422IVSM(208V)
window air conditioner · 23,500 BTU cooling · fits ~1,175 sq ft
A window AC rated 23,500 BTU — enough cooling for a room of roughly 1,175 square feet (the 20-BTU-per-square-foot rule).
Buy this unit
Sold online — DIY install
A window AC is a self-install unit: you set it in the window (or wall sleeve), no contractor or refrigerant charge needed. We link a live Amazon search for this exact brand and model so you see current prices and sellers.
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At a glance
Who it's for
Cooling a single room of about 1,175 sq ft — a bedroom, office or apartment — that you install yourself, no contractor.
The standout number
CEER 14.5 — the room-AC efficiency number; higher means a lower summer electric bill.
The catch
Window units only fit windows in their size range — measure your window width and height against the dimensions below before you buy.
The Verified Label — every certified spec
certified 2023-09-27
status: Active
Cooling & efficiency — source: ENERGY STAR / DOE
Fit & install — does it fit your window?
Operating cost — computed by Verified HVAC Data
Estimated annual running cost
per year at U.S. average electricity prices · ~1,216 kWh
Efficiency tier
ENERGY STAR Most Efficient — top tier
Running cost falls as CEER rises and as you run it fewer hours. Your climate and local electricity price change the total.
Refrigerant & identity
How it ranks
Where this unit sits among the 420 window and through-the-wall air conditioners we track, on CEER — the efficiency number that decides its running cost. Percentiles are computed from our corpus (higher = better).
CEER efficiency
Better than 26%
of the 420 room ACs with a published CEER
Cooling capacity
23,500 BTU
Sized for a room of about 1,175 sq ft at 20 BTU per square foot.
Rebates & incentives
This unit meets ENERGY STAR Most Efficient, the top room-AC tier some utility rebates require. The federal 25C credit expired December 31, 2025, and it never covered room ACs anyway; the live money is state and utility programs. Check what applies where you live on our rebates page.
Compare similar room ACs
Frequently asked questions
What size room does the LG LW2422IVSM(208V) cool?
It puts out 23,500 BTU of cooling. The common rule of thumb is 20 BTU per square foot, so it suits a room of about 1,175 square feet with 8-foot ceilings. Sunny rooms, kitchens or spaces with many people need a bit more; heavily shaded rooms a bit less.
How efficient is the LG LW2422IVSM(208V)?
It is rated CEER 14.5. CEER (Combined Energy Efficiency Ratio) is the DOE test number for room air conditioners — the higher it is, the less electricity the unit uses for the same cooling. This model uses about 54% less energy than the federal minimum for its size.
What does the LG LW2422IVSM(208V) cost to run?
We estimate about $229 a year to run it — roughly 1,216 kWh, at U.S. average electricity prices and a typical cooling season. Your climate and local power price move the number; running it fewer hours costs less.
Will the LG LW2422IVSM(208V) fit my window?
Measure your window opening first. This unit's cabinet is about 26" wide and 18" tall, 31" deep, and weighs roughly 112 lb. Most double-hung windows fit units in this range with the included side panels, but confirm your window's inside width and minimum height.
Where can I buy the LG LW2422IVSM(208V)?
Room air conditioners are self-install and sold online. Our "Find it on Amazon" button opens a live search for this exact brand and model so you can compare current prices and sellers. It sets in the window (or wall sleeve) yourself — no contractor and no refrigerant charge.
Sources. Certification and CEER from ENERGY STAR room-AC data and the DOE compliance certification database. Cooling capacity, dimensions and refrigerant are the manufacturer-certified values. Annual running cost, suggested room size and the percentile are computed by Verified HVAC Data from published ratings and EIA U.S. average electricity prices — see our methodology. Refrigerant GWP is the IPCC value. We publish no star ratings and take no payment for placement. "Not published" means the source registry doesn't disclose it — we never fill a spec with a guess.