Natural Light SAF48 Solar Attic Fan
#5 in Roof mountFull review
For a larger attic where the owner wants a lifetime warranty and a big panel. Buyers who need night running should look at hybrid fans.
Amazon $729.70$729.70
The Natural Light SAF48 Solar Attic Fan rates 3.6 among roof mount solar attic fans; the QuietCool AFG SLR SMT 50W Gable Fan rates 3.3 among gable mount ones. The QuietCool AFG SLR SMT 50W Gable Fan costs $370.70 less ($359 vs $729.70).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
QuietCool AFG SLR SMT 50W Gable Fan
#5 in Gable mountFull review
For a gable vented attic where the owner wants app control and steady airflow around the clock, at the same price as the simpler AFG SLR-40.
Amazon $359$359
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 | Natural Light SAF48 Solar Attic Fan | QuietCool AFG SLR SMT 50W Gable Fan |
|---|---|---|
| Overall rating | 3.6/5 | 3.3/5 |
| Value 25% | 24 $0.39 per CFM ($729.70, 1,881 CFM) | 61 $0.20 per CFM ($359, 1,780 CFM) |
| Airflow 15% | 67 1,881 CFM | 62 1,780 CFM |
| Panel 20% | 76 48 W panel | 80 50 W panel |
| Features 15% | 30 separate or tilting panel | 70 thermostat, AC backup |
| Warranty 25% | 100 lifetime warranty | 0 warranty not published, scored as none |
Specifications
| Natural Light SAF48 Solar Attic Fan | QuietCool AFG SLR SMT 50W Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Gable |
| Airflow | 1,881 CFM | 1,780 CFM |
| Attic area | 2,825 sq ft | 2,250 sq ft |
| Motor | DC | DC |
| Power | ||
| Panel | 48 W | 50 W |
| Separate or tilting panel | Yes | - |
| Thermostat | No | Yes |
| AC backup | No | Yes |
| Build | ||
| Warranty | Lifetime | - |
| Released | - | 2026-09 |