Windmill AC WhisperTech 8,000 BTU
#3 in WindowFull review
A stylish, quiet inverter unit for a bedroom up to 350 sq ft. It’s priced close to the big-brand inverter models.
Amazon $359$359
The Windmill AC WhisperTech 8,000 BTU rates 3.9 among window air conditioners; the Danby DPA050E2BDB-6 rates 2.3 among portable ones. The Danby DPA050E2BDB-6 costs $19 less ($340 vs $359).
Danby DPA050E2BDB-6
#13 in PortableFull review
A compact portable for a small room where a bigger unit won’t fit; most buyers get more cooling per dollar elsewhere.
Amazon $340$340
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (window and portable), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Windmill AC WhisperTech 8,000 BTU | Danby DPA050E2BDB-6 |
|---|---|---|
| Overall rating | 3.9/5 | 2.3/5 |
| Value 30% | 64 $44.88 per 1,000 BTU (certified) | 40 $66.02 per 1,000 BTU (SACC) |
| Efficiency 30% | 73 CEER 15 | 2 CEER 6.2 |
| Quiet 15% | 89 42 dB on low (maker rating) | 50 noise not published (neutral score used) |
| Inverter & app 15% | 100 inverter compressor, Wi-Fi app | 0 fixed-speed compressor, no app |
| Warranty 10% | 0 1-year warranty | 25 2-year warranty |
Specifications
| Windmill AC WhisperTech 8,000 BTU | Danby DPA050E2BDB-6 | |
|---|---|---|
| Cooling | ||
| Type | Window | Portable, single hose |
| Certified capacity | 8,000 BTU | 5,150 BTU |
| ASHRAE rating (95 °F) | - | 7,500 BTU |
| Room size (maker) | 350 sq ft | 150 sq ft |
| Inverter compressor | Yes | No |
| Heat | No | No |
| Noise | 42 dB | - |
| Efficiency and power | ||
| CEER | 15 Btu/Wh | 6.2 Btu/Wh |
| Certified by | ENERGY STAR | DOE |
| ENERGY STAR | Yes | - |
| Power | 740 W | - |
| Voltage | 115 V | - |
| Current | 6.8 A | - |
| Refrigerant | R-32 | R-32 |
| Controls and fit | ||
| Wi-Fi app | Yes | - |
| Remote | Yes | - |
| Window width | 23 to 37 in wide | - |
| Drain | - | direct drain for dehumidifier mode |
| Dimensions | 13.3 x 19.3 x 22.5 in | 26.36 x 12.6 x 12.6 in |
| Weight | 61 lb | 52.2 lb |
| Warranty | 1 years | 2 years |