Maxx Air CX1025SOL Solar Attic Fan
#17 in Roof mountFull review
A plain solar only roof fan for a small attic. Other fans with bigger panels and adapters cost less.
Amazon $369.99$369.99
1,030 CFM25 W
1.9/5
For a small attic where a roofing brand warranty with labor cover matters more than airflow per dollar.
- 525 CFMAirflow
- 15 WPanel
- 800 sq ftAttic area
- 5 yearsWarranty
Check price at Amazon$289.95
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Backed by GAF with a 5 year warranty that includes 2 years of labor cover
- Airflow verified by a third party lab, per GAF
- Tilt and swivel panel can be aimed at the sun
Cons
- Small 15 W panel and 525 CFM, enough for about 800 sq ft
- Solar only, so it stops at night and on dark days
- High price per CFM
The Master Flow GreenMachine Solar Roof Vent family
Every Master Flow GreenMachine Solar Roof Vent model we rank, smallest first. Ratings compare each against its own mount.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| Master Flow ERVHYBRID Dual Roof Vent | 500 CFM | 2.2/5 | $418 |
| Master Flow ERVSOLAR Solar Roof Vent (this one) | 525 CFM | 1.9/5 | $289.95 |
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 | ERVSOLAR |
|---|---|
| Airflow | |
| Mount | Roof |
| Airflow | 525 CFM |
| Attic area | 800 sq ft |
| Motor | 24V brushless DC |
| Power | |
| Panel | 15 W |
| Separate or tilting panel | Yes |
| AC backup | No |
| Build | |
| Weight | 20 lb |
| Warranty | 5 years |
Alternatives in this mount
Master Flow PRSOLAR2 Solar Roof Vent
#18 in Roof mountFull review
For a medium attic where a low profile look and a GAF warranty with labor cover matter more than airflow per dollar.
Amazon $460.54$460.54
750 CFM35 W6 years
Master Flow ERVHYBRID Dual Roof Vent
#19 in Roof mountFull review
For a small attic where the owner wants round the clock venting from a roofing brand. Other hybrid fans move far more air for less.
Amazon $418$418
500 CFM15 W5 years
Compare
Compare the Master Flow ERVSOLAR Solar Roof Vent with any other solar attic fan →
More from Master Flow: every Master Flow product ranked.