LG 8,500 BTU dual inverter smart window air conditioner installed in a bright room

Inverter quiet without the U-shape's install gymnastics.

LG Dual Inverter Smart Window AC (8,500 BTU, LW8024IVSM)

LG

8.5/10high confidence

The LW8024IVSM gets you 90% of the Midea U+'s quiet and efficiency in a conventional body that drops into the window like a normal AC. Pick it if the U's bracket install or recall history puts you off — just accept the ThinQ app's mediocre reputation.

LG's answer to the quiet-AC question is brute engineering instead of clever geometry: a dual-rotor inverter compressor that ramps smoothly down to 44 dB in sleep mode — library-quiet — while pushing 8,500 BTU across rooms up to 380 sq ft. Owners consistently describe the same experience: it cools fast, then fades into the background instead of cycling on with a clunk at 3 a.m. Because it's a conventional chassis, installation is the familiar lift, set, extend-the-curtains routine — no saddle bracket, no window-frame clearance puzzle, and it fits standard 22–36 inch openings. Four-way air deflection is a quiet advantage over the Midea's two-way vents if your bed or desk sits off-axis from the window. The weak spot is software. LG ThinQ handles on/off, temperature, scheduling and energy monitoring, and it talks to Alexa and Google — but its app-store reputation is genuinely mixed, and this is not the ecosystem to buy for the app alone. Buy it for the compressor.

$399

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Last reviewed Jul 5, 2026

AI grade·Refined by real owners

What we like

  • Dual-inverter compressor holds temperature with a steady, low hum instead of cycling
  • Conventional install — no bracket, no U-saddle fitting, standard window kit
  • 4-way air deflection reaches corners the two-way units miss
  • Energy Star with claimed 35% margin over the federal efficiency floor

Trade-offs

  • ThinQ app is the weakest link — reviews are consistently mixed
  • Heavier than non-inverter 8K units; still a two-person lift
  • The window stays sealed shut all season, unlike the U-shaped design
  • Rarely discounted as aggressively as the Midea

Best for

you want inverter quiet and efficiency in a normal window-AC body with a normal install

Avoid if

you want to keep using your window during the season, or you're buying primarily for a polished app experience

Score breakdown

  • quietness9.0/10
  • energy efficiency8.8/10
  • cooling power8.5/10
  • value8.3/10
  • smart features8.0/10
  • installation fit7.8/10

Specs

model
LW8024IVSM
warranty
1 year
compressor
LG Dual Inverter (variable speed)
fan speeds
4 (with Auto Cool)
window fit
22–36 in wide, min 13 in tall
noise level
As low as 44 dB (sleep mode)
air direction
4-way
room coverage
Up to 380 sq ft
smart control
LG ThinQ app, Alexa, Google Assistant
cooling capacity
8,500 BTU
energy certification
Energy Star; up to 35% better than DOE minimum CEER

How we know

High confidence

Consumer Reports lab-tests the LW8024IVSM for 250–350 sq ft rooms with steady inverter operation; LG publishes the 44 dB sleep-mode figure and the 35%-over-DOE-minimum CEER claim against the 10.9 baseline (May 2024 certification). Independent 2026 window-AC roundups rank it the best conventional-body inverter unit, typically at ~$400. Owner reviews across P.C. Richard, Best Buy and Amazon converge on the same two notes: impressively quiet, consistent temperatures; app occasionally flaky. Scored just behind the Midea U+ on quietness and efficiency, ahead of it on installation.

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