OmniPV OP-SWF-40 Solar Gable Fan
#2 in Gable mountFull review
A hybrid gable fan with a strong airflow claim at a mid range price, for a buyer who can live without a stated warranty.
Amazon $268.99$268.99
The OmniPV OP-SWF-40 Solar Gable Fan rates 3.3 among gable mount solar attic fans; the DC House 32W Solar Attic Fan rates 2.9 among roof mount ones. The DC House 32W Solar Attic Fan costs $119 less ($149.99 vs $268.99).
DC House 32W Solar Attic Fan
#10 in Roof mountFull review
A low cost, solar only fan for a shed, garage or small attic where any extra airflow helps. The airflow claim and short coverage make it a gamble for a whole house.
Amazon $149.99$149.99
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.
Scores side by side
These two sit in different mount classes (gable mount and roof 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 | OmniPV OP-SWF-40 Solar Gable Fan | DC House 32W Solar Attic Fan |
|---|---|---|
| Overall rating | 3.3/5 | 2.9/5 |
| Value 25% | 78 $0.15 per CFM ($268.99, 1,800 CFM credited of 2,100 claimed (45 per panel watt)) | 98 $0.10 per CFM ($149.99, 1,440 CFM credited of 2,400 claimed (45 per panel watt)) |
| Airflow 15% | 63 1,800 CFM credited of 2,100 claimed (45 per panel watt) | 44 1,440 CFM credited of 2,400 claimed (45 per panel watt) |
| Panel 20% | 60 40 W panel | 44 32 W panel |
| Features 15% | 70 thermostat, AC backup | 0 none of the three |
| Warranty 25% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| OmniPV OP-SWF-40 Solar Gable Fan | DC House 32W Solar Attic Fan | |
|---|---|---|
| Airflow | ||
| Mount | Gable | Roof |
| Airflow | 2,100 CFM | 2,400 CFM |
| Attic area | - | 3,000 sq ft |
| Fan | - | 9 in |
| Motor | brushless DC | brushless, IP68 |
| Power | ||
| Panel | 40 W | 32 W |
| Thermostat | Yes | - |
| AC backup | Yes | No |
| Build | ||
| Weight | 12 lb | - |
| Warranty | - | 1 year |