A plain solar only roof fan for a small attic. Other fans with bigger panels and adapters cost less.
Amazon $369.99The Maxx Air CX1025SOL Solar Attic Fan and the Master Flow ERVHYBRID Dual Roof Vent are evenly matched, rated 2.3 and 2.2. The Maxx Air CX1025SOL Solar Attic Fan leads on panel. The Master Flow ERVHYBRID Dual Roof Vent wins on features. The Maxx Air CX1025SOL Solar Attic Fan costs $48.01 less ($369.99 vs $418).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
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 $418Which should you buy?
- Choose the Maxx Air CX1025SOL Solar Attic Fan for panel (25 W panel vs 15 W panel).
- Choose the Master Flow ERVHYBRID Dual Roof Vent for features (thermostat, AC backup, separate or tilting panel vs thermostat).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every roof mount solar attic fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | Maxx Air CX1025SOL Solar Attic Fan | Master Flow ERVHYBRID Dual Roof Vent |
|---|---|---|
| Overall rating | 2.3/5 | 2.2/5 |
| Value 25% | 29 $0.36 per CFM ($369.99, 1,030 CFM) | 0 $0.84 per CFM ($418, 500 CFM) |
| Airflow 15% | 23 1,030 CFM | 0 500 CFM |
| Panel 20% | 30 25 W panel | 10 15 W panel |
| Features 15% | 40 thermostat | 100 thermostat, AC backup, separate or tilting panel |
| Warranty 25% | 0 warranty not published, scored as none | 17 5-year warranty |
Specifications
| Maxx Air CX1025SOL Solar Attic Fan | Master Flow ERVHYBRID Dual Roof Vent | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 1,030 CFM | 500 CFM |
| Attic area | 1,000 sq ft | 800 sq ft |
| Fan | 12 in | - |
| Motor | brushless DC, IP68 | 24V brushless DC |
| Power | ||
| Panel | 25 W | 15 W |
| Separate or tilting panel | No | Yes |
| Thermostat | Yes | Yes |
| AC backup | - | Yes |
| Build | ||
| Warranty | - | 5 years |
