QuietCool AFR SLR-40 Solar Roof Fan
#7 in Roof mountFull review
For a medium attic on a roof that faces away from the sun, where the tilting panel earns its keep. On a south facing roof the 25 W model is better value.
QuietCool $439$439
The QuietCool AFR SLR-40 Solar Roof Fan rates 3.3 among roof mount solar attic fans; the VEVOR 14 in Solar Gable Fan rates 3.1 among gable mount ones. The VEVOR 14 in Solar Gable Fan costs $293.10 less ($145.90 vs $439).
VEVOR 14 in Solar Gable Fan
#4 in Gable mountFull review
A low cost gable fan for a garage, shop or small attic where a short warranty is acceptable.
Amazon $145.90$145.90
Prices were last checked November 2, 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 mount classes (roof mount and gable mount), and each is scored against the reference points for its own class, so a rating says how well each does among its own mount peers. How we rank explains each factor.
| Factor weight | QuietCool AFR SLR-40 Solar Roof Fan | VEVOR 14 in Solar Gable Fan |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 25% | 22 $0.40 per CFM ($439, 1,085 CFM) | 94 $0.11 per CFM ($145.90, 1,300 CFM) |
| Airflow 15% | 26 1,085 CFM | 37 1,300 CFM |
| Panel 20% | 60 40 W panel | 50 panel rating not published (neutral score used) |
| Features 15% | 100 thermostat, AC backup, separate or tilting panel | 40 thermostat |
| Warranty 25% | 58 15-year warranty | 0 warranty not published, scored as none |
Specifications
| QuietCool AFR SLR-40 Solar Roof Fan | VEVOR 14 in Solar Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Gable |
| Airflow | 1,085 CFM | 1,300 CFM |
| Attic area | 1,450 sq ft | 1,850 sq ft |
| Fan | - | 14 in |
| Motor | 24V brushless DC, IP67 | - |
| Power | ||
| Panel | 40 W | - |
| Separate or tilting panel | Yes | - |
| Thermostat | Yes | Yes |
| AC backup | Yes | - |
| Build | ||
| Weight | - | 16.8 lb |
| Warranty | 15 years | - |