QuietCool QC CL-1500 whole house fan for near-silent cooling
The QC CL-1500 pulls cooler outdoor air in through open windows and pushes hot air out through the attic to cool the whole house. It moves 1,527 CFM and covers roughly 491 to 736 square feet. A patented acoustical duct on an R5 insulated damper box drops the noise and vibration to a whisper. At 156 watts it runs near 9.78 CFM per watt.
Energy-efficient attic-mounted whole house ventilation fan
Instead of running an AC through the evening, homeowners open windows and let the fan flush the house and attic with cool night air. The R5 insulated dampers seal tight when the fan is off to keep conditioned air from leaking. It needs about 2 square feet of net attic venting to breathe. A 20-foot power cord and removable grille make install and cleaning simple. It carries a 10-year warranty for long service.
Key Features
- 1,527 CFM Whole-House: Flushes the home and attic with cool outdoor air.
- Whisper-Quiet Design: Acoustical duct and R5 damper box cut noise and vibration.
- 156W / 9.78 CFM per Watt: Runs a fraction of an AC's power draw.
- Covers 491-736 sq ft: Sized for medium homes and rooms.
- R5 Dampers + 10-Yr Warranty: Seals when off, backed for long service.
Technical Specifications
| Specification | Value |
|---|---|
| Type | Whole house / attic ventilation fan |
| Airflow | 1,527 CFM |
| Power | 156 W (9.78 CFM/W) |
| Coverage | 491-736 sq ft |
| Grille | 16 x 16 in (removable) |
| Damper | R5 insulated box (acoustical duct) |
| Attic Venting Required | ~2 sq ft |
| Cord Length | 20 ft |
| Warranty | 10 years |