QuietCool AFR SLR-25 Solar Roof Fan
#9 in Roof mountFull review
For a small attic where a low cost hybrid fan with a long warranty matters more than airflow. Larger attics need the 40 W model or two fans.
Amazon $309 QuietCool $279$279
2.8/5
For 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.
- 1,119 CFMAirflow
- 50 WPanel
- 1,500 sq ftAttic area
Check price at Amazon$439.99Check price at QuietCool$439
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Phone app shows attic temperature and humidity and lets you change settings from the house
- Blends solar and house power so airflow holds steady through the day and runs all night
- Largest panel among the QuietCool roof fans
- Built in fire safety shut off
Cons
- No warranty term published for this model yet
- Lower rated airflow than cheaper non smart fans
- Flashings for tile and low pitch roofs are sold separately
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 | AFR SLR SMT-50W |
|---|---|
| Airflow | |
| Mount | Roof |
| Airflow | 1,119 CFM |
| Attic area | 1,500 sq ft |
| Motor | DC |
| Power | |
| Panel | 50 W |
| Thermostat | Yes |
| AC backup | Yes |
| Build | |
| Released | 2026-06 |
Alternatives in this mount
DC House 32W Solar Attic Fan
#10 in Roof mountFull review
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 $149.99$149.99
Maxx Air CX1025SOL Solar Attic Fan
#12 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
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