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 is the better solar attic fan overall, rated 3.6 to 3.2. The Natural Light SAF48 Solar Attic Fan leads on panel. The OmniPV OP-SAF-40 Hybrid Solar Attic Fan wins on features. The OmniPV OP-SAF-40 Hybrid Solar Attic Fan costs $429.80 less ($299.90 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.
OmniPV OP-SAF-40 Hybrid Solar Attic Fan
#11 in Roof mountFull review
A hybrid roof fan with a thermostat for a medium attic at a fair price. The newer 50 W model is the better buy if the price gap stays small.
Amazon $299.90$299.90
Which should you buy?
- Choose the Natural Light SAF48 Solar Attic Fan for panel (48 W panel vs 40 W panel).
- Choose the OmniPV OP-SAF-40 Hybrid Solar Attic Fan for features (thermostat, AC backup vs separate or tilting panel).
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 | Natural Light SAF48 Solar Attic Fan | OmniPV OP-SAF-40 Hybrid Solar Attic Fan |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Value 25% | 24 $0.39 per CFM ($729.70, 1,881 CFM) | 72 $0.17 per CFM ($299.90, 1,800 CFM credited of 2,100 claimed (45 per panel watt)) |
| Airflow 15% | 67 1,881 CFM | 63 1,800 CFM credited of 2,100 claimed (45 per panel watt) |
| Panel 20% | 76 48 W panel | 60 40 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 | OmniPV OP-SAF-40 Hybrid Solar Attic Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 1,881 CFM | 2,100 CFM |
| Attic area | 2,825 sq ft | - |
| Motor | DC | brushless DC |
| Power | ||
| Panel | 48 W | 40 W |
| Separate or tilting panel | Yes | - |
| Thermostat | No | Yes |
| AC backup | No | Yes |
| Build | ||
| Weight | - | 17.2 lb |
| Warranty | Lifetime | - |