Midea U 8,000 BTU Smart Inverter Window AC vs LG Dual Inverter 8,500 BTU
Quick take: The Midea U 8,000 BTU Smart Inverter Window AC costs $139 less; the Midea U 8,000 BTU Smart Inverter Window AC is the quieter machine (32 dB on low).
| Spec | Midea U 8,000 BTU Smart Inverter Window AC | LG Dual Inverter 8,500 BTU |
|---|---|---|
| Price | $320 | $459 |
| Rating | — | 4.4★ (73) |
| Type | U-Shaped Window | Window |
| Capacity (ASHRAE) | 8k BTU | 8.5k BTU |
| SACC (delivered) | — | — |
| Coverage | ~350 sq ft | ~380 sq ft |
| Noise (lowest) | 32 dB | 44 dB |
| CEER (efficiency) | 15 | 15 |
| Compressor | Inverter (variable) | Inverter (variable) |
| Heating | — | — |
| Window Fit | 22–36 in | 27–42 in |
| Voltage | 115V | 115V |
| Weight | 56 lbs | 83 lbs |
| WiFi Control | Built-in | Built-in |
| Install | The U-shape is the whole point: a support bracket screws to the sill first, the unit drops into it, and your window sash closes down into the U-channel, so the glass itself becomes the sound barrier between you and the compressor. That bracket install is more involved than a cheap box AC — expect 30-60 minutes with a drill and a second set of hands for the 56 lb unit. Foam side panels get cut to fit, and getting the slight backward tilt right matters more than usual on this design because of its drainage history. Once installed you can still open the window for fresh air without removing the AC. | Do not attempt this one alone: the inverter chassis weighs about 83 pounds and is nearly 29 inches deep, so most of the mass hangs outside the window. A support bracket is strongly recommended (and required by code in NYC-style installs), and two people make the lift safe. It needs a wider window than most 8K units — roughly 27 to 42 inches — plus about 16 inches of sash height. Budget an hour, and note the deep cabinet can block outward-opening screens. |
| Warranty | 1 year parts & labor | 1-year parts & labor; 10-year warranty on the dual inverter compressor |
Pros & cons
Midea U 8,000 BTU Smart Inverter Window AC
- ✓Class-leading quiet — low-30s dBA with the sash closed through the U-channel
- ✓Inverter holds set temperature within about a degree instead of cycling hot-cold
- ✓CEER 15 efficiency means roughly 35% lower running cost than a fixed-speed unit
- ✓Window remains operable for fresh air without uninstalling the unit
- ✓Anti-theft: sash locks down into the channel, more secure than a propped window
- ✓Works with Alexa, Google Assistant, and the SmartHome app for scheduling
- ✓Included support bracket handles the leveling and takes weight off the sash
- ✓2026 production has the revised post-recall drainage design
- ✗June 2025 CPSC recall of 1.7M earlier units for slow drainage and mold risk — check serial and run the fix
- ✗Install is a 30-60 minute bracket-and-drill job, not a drop-in
- ✗SmartHome app is flaky; Wi-Fi pairing complaints are common
- ✗Some long-term owners report fan bearing whine after a couple of seasons
- ✗Foam side panels look and feel cheap and need careful cutting
- ✗1-year warranty is short for a premium-positioned unit
LG Dual Inverter 8,500 BTU
- ✓Dual inverter compressor ramps instead of cycling — no on/off thunk
- ✓Published operation as low as 44 dB
- ✓CEER 15.0 cuts energy use up to 35% vs conventional units
- ✓Holds set temperature within about 1 degree
- ✓ThinQ app with energy monitoring, Alexa and Google voice control
- ✓8,500 BTU covers up to 380 sq ft — more headroom than rival 8Ks
- ✓10-year compressor warranty backs the inverter hardware
- ✓4-way air deflection spreads air well in wide rooms
- ✗83 lbs and 28.75 in deep — a two-person install that wants a bracket
- ✗Needs a window at least ~27 in wide; won't fit narrow openings
- ✗ThinQ app is clunky, with login and connectivity complaints
- ✗Some units develop a low-frequency hum at mid compressor speeds
- ✗$150+ premium over budget 8K units
- ✗Condensate gurgle noises reported in humid climates