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 and the QuietCool AFG SLR SMT 50W Gable Fan are evenly matched, rated 3.3 and 3.3. The QuietCool AFG SLR SMT 50W Gable Fan wins on panel. The OmniPV OP-SWF-40 Solar Gable Fan costs $90.01 less ($268.99 vs $359).
QuietCool AFG SLR SMT 50W Gable Fan
#3 in Gable mountFull review
For a gable vented attic where the owner wants app control and steady airflow around the clock, at the same price as the simpler AFG SLR-40.
Amazon $359$359
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 QuietCool AFG SLR SMT 50W Gable Fan for panel (50 W panel vs 40 W panel).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gable mount solar attic fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | OmniPV OP-SWF-40 Solar Gable Fan | QuietCool AFG SLR SMT 50W Gable Fan |
|---|---|---|
| Overall rating | 3.3/5 | 3.3/5 |
| Value 25% | 78 $0.15 per CFM ($268.99, 1,800 CFM credited of 2,100 claimed (45 per panel watt)) | 61 $0.20 per CFM ($359, 1,780 CFM) |
| Airflow 15% | 63 1,800 CFM credited of 2,100 claimed (45 per panel watt) | 62 1,780 CFM |
| Panel 20% | 60 40 W panel | 80 50 W panel |
| Features 15% | 70 thermostat, AC backup | 70 thermostat, AC backup |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| OmniPV OP-SWF-40 Solar Gable Fan | QuietCool AFG SLR SMT 50W Gable Fan | |
|---|---|---|
| Airflow | ||
| Mount | Gable | Gable |
| Airflow | 2,100 CFM | 1,780 CFM |
| Attic area | - | 2,250 sq ft |
| Motor | brushless DC | DC |
| Power | ||
| Panel | 40 W | 50 W |
| Thermostat | Yes | Yes |
| AC backup | Yes | Yes |
| Build | ||
| Weight | 12 lb | - |
| Released | - | 2026-09 |