OmniPV OP-SAF-40 Hybrid Solar Attic Fan
#8 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
2.9/5
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.
- 2,400 CFMAirflow
- 32 WPanel
- 3,000 sq ftAttic area
- 1 yearWarranty
Check price at Amazon$149.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Lowest price in the roof group
- Metal housing
- No wiring: it runs whenever the sun is out
Cons
- Airflow claims conflict within the listing and look high for a 32 W panel
- No thermostat, so it runs in winter sun too, and nothing for night or cloudy days
- Only a one year replacement promise
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its mount. How we rank explains each one.
Specifications
| Model number | 1211200028 |
|---|---|
| Airflow | |
| Mount | Roof |
| Airflow | 2,400 CFM |
| Attic area | 3,000 sq ft |
| Fan | 9 in |
| Motor | brushless, IP68 |
| Power | |
| Panel | 32 W |
| AC backup | No |
| Build | |
| Warranty | 1 year |
Alternatives in this mount
QuietCool AFR SLR-25 Solar Roof Fan
#9 in Roof mountFull review
For a small attic where a low cost hybrid fan with a long warranty matters more than airflow. Larger attics need the 40 W model or two fans.
Amazon $309 QuietCool $279$279
QuietCool AFR SLR SMT 50W Roof Fan
#11 in Roof mountFull review
For a homeowner who wants to watch and control attic conditions from a phone and run around the clock. Buyers after the most airflow per dollar should look elsewhere.
Amazon $439.99 QuietCool $439$439
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