How loud is the LG LW8022IVSM Dual Inverter?

44 dB(A) indoors, about as loud as a quiet library.

How energy-efficient is the LG LW8022IVSM Dual Inverter?

Its efficiency rating is CEER 15.5, and it is ENERGY STAR certified.

What size room does the LG LW8022IVSM Dual Inverter 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 LG LW8022IVSM Dual Inverter?

No. It is a window unit you can fit yourself, no professional needed. Usually no permit.

Window unitENERGY STAR

LW8022IVSM Dual Inverter

8,000 BTU LG Dual Inverter window AC rated CEER 15.5 and Energy Star certified for rooms up to 350 sq ft, with quiet inverter cooling and ThinQ WiFi.

$419

Live price at Abt Electronics

Price checked Oct 8, 2026

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Will it cool your room?

Room size 500 sq ft ≈ 46.5 m²

Undersized for 46.5 m²

This is undersized for your 500 sq ft room. It would run flat out and struggle to keep up.

Running costest.

~$70/year

Estimated from ENERGY STAR's published annual energy use at about 750 hours of cooling a year (the DOE test standard) 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)). A standardized figure for comparison; your real cost depends on how much you run it, your local rate and your climate.

Local rates vary widely (about 15¢/kWh in Florida to 33¢ in California), and hotter regions run their AC more hours, so your real cost differs.

Every window air conditioner side by side

At a glance

Best for small to medium rooms wanting lg's most efficient 8k unit.

Cooling

2.3 kW

Size

Average

Noise

44 dB

Audible

Install: Self-fit, no pro neededPermission: Usually no permit

Performance

Cooling capacity: 8,000 BTU · 2.3 kW
Heating capacity: Cooling only
Room coverage: up to 350 sq ft
Energy Star: Yes
CEER: 15.5
Annual energy (cooling): 387 kWh

Noise, size & features

Model number: LW8022IVSM
Indoor noise: 44 dB(A)about as loud as a quiet library
Outdoor noise: Not published
Indoor unit: 12.4 x 19.6 x 24.5 in (HxWxD)
Outdoor unit: None
Refrigerant: R-32
Wi-Fi / app: Yes
Outdoor unit needed: No

What is good

High CEER 15.5, Energy Star certified
LG Dual Inverter, quiet variable-speed cooling
R-32 refrigerant
ThinQ WiFi with Alexa and Google

What to watch

Standard window mount blocks the full opening
44 dB on low, louder than U-shaped saddle units
Deep chassis (24.5 in) sticks well into the room

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.

Installation

Self-fit, no pro needed

Refrigerant

R-32

GeneralRenters: get written landlord consent firstReviewed June 2026Often blocks install

GeneralCondo / HOA: exterior changes need approvalReviewed June 2026Permit required

GeneralHistoric / listed buildings: consent before any exterior unitReviewed June 2026Permit required

MassachusettsMassachusetts: local historic district approval (MGL c.40C)Reviewed June 2026Permit required

United StatesUS: local mechanical and electrical permits (vary by city)Reviewed June 2026Permit required

See full rules by region

Common questions about the LG LW8022IVSM Dual Inverter

How much does the LG LW8022IVSM Dual Inverter cost to run per year?: About $70 a year. Estimated from ENERGY STAR's published annual energy use at about 750 hours of cooling a year (the DOE test standard) 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)). A standardized figure for comparison; your real cost depends on how much you run it, your local rate and your climate.
How loud is the LG LW8022IVSM Dual Inverter?: 44 dB(A) indoors, about as loud as a quiet library.
How energy-efficient is the LG LW8022IVSM Dual Inverter?: Its efficiency rating is CEER 15.5, and it is ENERGY STAR certified.
What size room does the LG LW8022IVSM Dual Inverter 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 LG LW8022IVSM Dual Inverter?: No. It is a window unit you can fit yourself, no professional needed. Usually no permit.