QuietScore › Bathroom & Utility Fans › QuFresh SL100-3
QuFresh SL100-3 noise level
The QuFresh SL100-3 is quieter than the category median of 0.7 sones, and its 100 CFM rating makes it suitable for bathrooms up to roughly 100 sq ft.
Full specifications
| Brand | QuFresh |
|---|---|
| Model number | SL100-3 |
| Model name | SL |
| Category | Bathroom & Utility Fans |
| Sound level | 0.6 sones (≈33 dBA, approximate) |
| Airflow | 100 CFM |
| Efficiency | 9.3 CFM/W |
| Duct size | 4.00 inch diameter |
| Speeds | 3 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2026-03-28 |
| Markets | United States |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| AUPU BF4-S10CL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
| Greenheck SP-LP0810W | 0.1 | 7 | 100 CFM | 10 CFM/W | specs |
| Greenheck SP-LP0810WL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
| Venco SP-LP0810W | 0.1 | 7 | 100 CFM | 10 CFM/W | specs |
| Venco SP-LP0810WL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| S&P PCLPD100XHP | 0.6 | 33 | 100 CFM | 9.3 CFM/W | specs |
| Fantech SF50-80-100 (484305) | 0.6 | 33 | 100 CFM | 9.3 CFM/W | specs |
| Fantech SF50-80-100L (484306) | 0.6 | 33 | 100 CFM | 9.3 CFM/W | specs |
| Fantech SFC50-80-100 (484307) | 0.6 | 33 | 100 CFM | 9.3 CFM/W | specs |
| Fantech SFC50-80-100H (484308) | 0.6 | 33 | 100 CFM | 9.3 CFM/W | specs |
Frequently asked questions
How many sones is the QuFresh SL100-3?
The QuFresh SL100-3 is certified at 0.6 sones in ENERGY STAR lab testing, which is approximately 33 dBA. That is comparable to a quiet modern refrigerator humming in the next room.
Is the QuFresh SL100-3 quiet?
At 0.6 sones, the QuFresh SL100-3 is quieter than 55% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the QuFresh SL100-3?
It moves 100 CFM, which is adequate for a bathroom of roughly 100 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 9.3 CFM per watt.
Data provenance: Sound levels are certified lab measurements (sones) reported in the U.S. EPA ENERGY STAR certified products dataset — not manufacturer marketing claims. Source: ENERGY STAR Certified Ventilating Fans (US EPA), last fetched 2026-06-13. The dBA figure is an approximate conversion from sones — see our methodology.