Remington Solar Builder Series 40W
#1 in Roof mountFull review
For a larger attic where the owner wants night running and a lifetime fan warranty in one box. The price is hard to justify on airflow alone.
Amazon $489$489
The Remington Solar Builder Series 40W rates 3.9 among roof mount solar attic fans; the Natural Light SAF32G Solar Gable Fan rates 3.2 among gable mount ones. The Remington Solar Builder Series 40W costs $183.70 less ($489 vs $672.70).
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.
Natural Light SAF32G Solar Gable Fan
#6 in Gable mountFull review
For a gable vented attic of up to 2,200 sq ft where a lifetime warranty is worth the premium. Hybrid gable fans cost far less.
Amazon $672.70$672.70
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 | Remington Solar Builder Series 40W | Natural Light SAF32G Solar Gable Fan |
|---|---|---|
| Overall rating | 3.9/5 | 3.2/5 |
| Value 25% | 34 $0.33 per CFM ($489, 1,500 CFM) | 14 $0.47 per CFM ($672.70, 1,440 CFM credited of 1,560 claimed (45 per panel watt)) |
| Airflow 15% | 47 1,500 CFM | 44 1,440 CFM credited of 1,560 claimed (45 per panel watt) |
| Panel 20% | 60 40 W panel | 44 32 W panel |
| Features 15% | 100 thermostat, AC backup, separate or tilting panel | 30 separate or tilting panel |
| Warranty 25% | 100 lifetime warranty | 100 lifetime warranty |
Specifications
| Remington Solar Builder Series 40W | Natural Light SAF32G Solar Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Gable |
| Airflow | 1,500 CFM | 1,560 CFM |
| Attic area | 2,400 sq ft | 2,200 sq ft |
| Motor | brushless DC | DC |
| Power | ||
| Panel | 40 W | 32 W |
| Separate or tilting panel | Yes | Yes |
| Thermostat | Yes | No |
| AC backup | Yes | No |
| Build | ||
| Weight | 31 lb | - |
| Warranty | Lifetime | Lifetime |