Remington Solar Builder Series 40W
#1 in Roof mountFull review
For a larger attic where the owner wants night running and a lifetime fan warranty in one box. The price is hard to justify on airflow alone.
Amazon $489$489
3.7/5
For a large attic where the buyer wants the most claimed airflow and an adjustable panel at a mid range price, without warranty assurance.
- 2,850 CFMAirflow
- 50 WPanel
- 4,000 sq ftAttic area
Check price at Amazon$350
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Biggest panel and highest rated airflow in the roof group
- Included adapter and wall switch run it at night or on demand
- Panel swivels and tilts on two axes
- All aluminum body will not rust stain the roof
Cons
- No published warranty
- The 12V 2A adapter supplies about 24 W, about half the panel rating, so night airflow will be lower
- The airflow rating has no stated test condition
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 | OP-SAF-50 |
|---|---|
| Airflow | |
| Mount | Roof |
| Airflow | 2,850 CFM |
| Attic area | 4,000 sq ft |
| Motor | brushless DC |
| Power | |
| Panel | 50 W |
| Separate or tilting panel | Yes |
| Thermostat | Yes |
| AC backup | Yes |
Alternatives in this mount
Remington Solar 30W Solar Attic Fan
#2 in Roof mountFull review
For a homeowner who wants a fan to fit once and forget, with a lifetime warranty and humidity control. Budget fans move more air per dollar but carry little or no warranty.
Amazon $398$398
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
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