OmniPV OP-SAF-50 Hybrid Solar Attic Fan
#3 in Roof mountFull review
For a large attic where the buyer wants the most claimed airflow and an adjustable panel at a mid range price, without warranty assurance.
Amazon $350$350
The OmniPV OP-SAF-50 Hybrid Solar Attic Fan is the better solar attic fan overall, rated 3.7 to 3.6. The OmniPV OP-SAF-50 Hybrid Solar Attic Fan leads on panel. The VEVOR 42W Solar Attic Fan costs $113.10 less ($236.90 vs $350).
VEVOR 42W Solar Attic Fan
#4 in Roof mountFull review
A cheap, feature rich hybrid fan for a buyer who will accept an unproven airflow claim and no stated warranty.
Amazon $236.90$236.90
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 OmniPV OP-SAF-50 Hybrid Solar Attic Fan for panel (50 W panel vs 42 W 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 | OmniPV OP-SAF-50 Hybrid Solar Attic Fan | VEVOR 42W Solar Attic Fan |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Value 25% | 75 $0.16 per CFM ($350, 2,250 CFM credited of 2,850 claimed (45 per panel watt)) | 87 $0.13 per CFM ($236.90, 1,890 CFM credited of 2,800 claimed (45 per panel watt)) |
| Airflow 15% | 87 2,250 CFM credited of 2,850 claimed (45 per panel watt) | 68 1,890 CFM credited of 2,800 claimed (45 per panel watt) |
| Panel 20% | 80 50 W panel | 64 42 W panel |
| Features 15% | 100 thermostat, AC backup, separate or tilting panel | 100 thermostat, AC backup, separate or tilting panel |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| OmniPV OP-SAF-50 Hybrid Solar Attic Fan | VEVOR 42W Solar Attic Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 2,850 CFM | 2,800 CFM |
| Attic area | 4,000 sq ft | - |
| Motor | brushless DC | brushless DC |
| Power | ||
| Panel | 50 W | 42 W |
| Separate or tilting panel | Yes | Yes |
| Thermostat | Yes | Yes |
| AC backup | Yes | Yes |
| Build | ||
| Weight | - | 17.9 lb |