QuietCool AFR SLR-25 Solar Roof Fan
#9 in Roof mountFull review
For a small attic where a low cost hybrid fan with a long warranty matters more than airflow. Larger attics need the 40 W model or two fans.
Amazon $309 QuietCool $279$279
The QuietCool AFR SLR-25 Solar Roof Fan rates 3.0 among roof mount solar attic fans; the Master Flow PGSOLAR Solar Gable Fan rates 2.2 among gable mount ones. The Master Flow PGSOLAR Solar Gable Fan costs $44.05 less ($234.95 vs $279).
Master Flow PGSOLAR Solar Gable Fan
#5 in Gable mountFull review
For a small attic with a gable vent where a known roofing brand and a labor backed warranty matter more than airflow.
Amazon $234.95$234.95
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-25 Solar Roof Fan | Master Flow PGSOLAR Solar Gable Fan |
|---|---|---|
| Overall rating | 3.0/5 | 2.2/5 |
| Value 25% | 39 $0.30 per CFM ($279, 927 CFM) | 30 $0.35 per CFM ($234.95, 675 CFM credited of 685 claimed (45 per panel watt)) |
| Airflow 15% | 17 927 CFM | 4 675 CFM credited of 685 claimed (45 per panel watt) |
| Panel 20% | 30 25 W panel | 10 15 W panel |
| Features 15% | 70 thermostat, AC backup | 30 separate or tilting panel |
| Warranty 25% | 58 15-year warranty | 17 5-year warranty |
Specifications
| QuietCool AFR SLR-25 Solar Roof Fan | Master Flow PGSOLAR Solar Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Gable |
| Airflow | 927 CFM | 685 CFM |
| Attic area | 1,200 sq ft | 800 sq ft |
| Motor | 24V brushless DC, IP67 | - |
| Power | ||
| Panel | 25 W | 15 W |
| Separate or tilting panel | No | Yes |
| Thermostat | Yes | - |
| AC backup | Yes | No |
| Build | ||
| Weight | - | 27 lb |
| Warranty | 15 years | 5 years |