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 is the better solar attic fan overall, rated 3.0 to 2.3. The QuietCool AFR SLR-25 Solar Roof Fan leads on features. The QuietCool AFR SLR-25 Solar Roof Fan costs $90.99 less ($279 vs $369.99).
Maxx Air CX1025SOL Solar Attic Fan
#12 in Roof mountFull review
A plain solar only roof fan for a small attic. Other fans with bigger panels and adapters cost less.
Amazon $369.99$369.99
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.
Which should you buy?
- Choose the QuietCool AFR SLR-25 Solar Roof Fan for features (thermostat, AC backup vs thermostat).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every roof mount solar attic fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | QuietCool AFR SLR-25 Solar Roof Fan | Maxx Air CX1025SOL Solar Attic Fan |
|---|---|---|
| Overall rating | 3.0/5 | 2.3/5 |
| Value 25% | 39 $0.30 per CFM ($279, 927 CFM) | 29 $0.36 per CFM ($369.99, 1,030 CFM) |
| Airflow 15% | 17 927 CFM | 23 1,030 CFM |
| Panel 20% | 30 25 W panel | 30 25 W panel |
| Features 15% | 70 thermostat, AC backup | 40 thermostat |
| Warranty 25% | 58 15-year warranty | 0 warranty not published, scored as none |
Specifications
| QuietCool AFR SLR-25 Solar Roof Fan | Maxx Air CX1025SOL Solar Attic Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 927 CFM | 1,030 CFM |
| Attic area | 1,200 sq ft | 1,000 sq ft |
| Fan | - | 12 in |
| Motor | 24V brushless DC, IP67 | brushless DC, IP68 |
| Power | ||
| Panel | 25 W | 25 W |
| Separate or tilting panel | No | No |
| Thermostat | Yes | Yes |
| AC backup | Yes | - |
| Build | ||
| Warranty | 15 years | - |