For a medium attic where the owner wants a roofing brand fan that runs around the clock and will pay for the wiring. Plug in hybrid fans cost less and move more air.
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Every Master Flow GreenMachine High-Power model we rank, smallest first. Ratings compare each against its own mount.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| Master Flow PRSOLAR2 Solar Roof Vent | 750 CFM | 2.3/5 | $460.54 |
| Master Flow PRHYBRID2 Dual Roof Vent (this one) | 750 CFM | 2.4/5 | $468 |
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.
| Model number | PRHYBRID2 |
|---|---|
| Airflow | |
| Mount | Roof |
| Airflow | 750 CFM |
| Attic area | 1,000 sq ft |
| Power | |
| Thermostat | Yes |
| AC backup | Yes |
| Build | |
| Weight | 23 lb |
| Warranty | 6 years |
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.
Amazon $149.99For 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 $439.99A plain solar only roof fan for a small attic. Other fans with bigger panels and adapters cost less.
Amazon $369.99Compare the Master Flow PRHYBRID2 Dual Roof Vent with any other solar attic fan →
More from Master Flow: every Master Flow product ranked.
