The iLiving 40W Hybrid Solar Attic Fan is the better solar attic fan overall, rated 3.4 to 3.0. The iLiving 40W Hybrid Solar Attic Fan leads on panel and features. The QuietCool AFR SLR-25 Solar Roof Fan costs $65.99 less ($279 vs $344.99).
A well equipped hybrid roof fan with a long warranty at a mid range price, for medium attics. Buy the 301A, which includes the night adapter for the same price as the 301.
Amazon $344.99For 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 $279Prices 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.
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 | iLiving 40W Hybrid Solar Attic Fan | QuietCool AFR SLR-25 Solar Roof Fan |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Value 25% | 39 $0.30 per CFM ($344.99, 1,150 CFM) | 39 $0.30 per CFM ($279, 927 CFM) |
| Airflow 15% | 29 1,150 CFM | 17 927 CFM |
| Panel 20% | 60 40 W panel | 30 25 W panel |
| Features 15% | 100 thermostat, AC backup, separate or tilting panel | 70 thermostat, AC backup |
| Warranty 25% | 58 15-year warranty | 58 15-year warranty |
| iLiving 40W Hybrid Solar Attic Fan | QuietCool AFR SLR-25 Solar Roof Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 1,150 CFM | 927 CFM |
| Attic area | 2,900 sq ft | 1,200 sq ft |
| Fan | 14 in | - |
| Motor | brushless, IP68 | 24V brushless DC, IP67 |
| Power | ||
| Panel | 40 W | 25 W |
| Separate or tilting panel | Yes | No |
| Thermostat | Yes | Yes |
| AC backup | Yes | Yes |
| Build | ||
| Weight | 32 lb | - |
| Warranty | 15 years | 15 years |
| Released | 2020-05 | - |
