A solid inverter pick for a bedroom up to 350 sq ft if you value the two-year warranty. Otherwise the TCL Q-Series does the same job for less.
Amazon $409
A strong choice for a big living room or open-plan space. It’s efficient and quiet for its size if you can handle the 85 lb install.
- 12,000 BTUCooling
- CEER 15Efficiency
- 550 sq ftRoom size
- 44 to 58 dBNoise
- 1 yearsWarranty
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
- Quiet enough for a bedroom on sleep mode (44 dBA rated)
- Efficient inverter cools a large 550 sq ft room cheaply
- Strong dehumidification for muggy rooms
- Very heavy at 85 lb and deep, so it needs a sturdy sill and two people
- Only a 1-year warranty
- Needs a window at least 27 in wide
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | LW1224IVSM |
|---|---|
| Cooling | |
| Type | Window |
| Certified capacity | 12,000 BTU |
| Room size (maker) | 550 sq ft |
| Inverter compressor | Yes |
| Heat | No |
| Dehumidifying | 86.4 pints/day |
| Noise | 44 to 58 dB |
| Efficiency and power | |
| CEER | 15 Btu/Wh |
| Certified by | ENERGY STAR |
| ENERGY STAR | Yes |
| Power | 1,020 W |
| Voltage | 115 V |
| Current | 9.1 A |
| Refrigerant | R-32 |
| Controls and fit | |
| Wi-Fi app | Yes |
| Voice assistants | Alexa, Google Assistant |
| Remote | Yes |
| Window width | 27 to 39 in wide |
| Dimensions | 14.9 x 23.6 x 28.8 in |
| Weight | 85 lb |
| Warranty | 1 years |
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