QuietScore › Bathroom & Utility Fans › Broan RB110L1
Broan RB110L1 noise level
The Broan RB110L1 is louder than the category median of 0.7 sones, and its 110 CFM rating makes it suitable for bathrooms up to roughly 110 sq ft.
Full specifications
| Brand | Broan |
|---|---|
| Model number | RB110L1 |
| Model name | ULTRA PRO |
| Category | Bathroom & Utility Fans |
| Sound level | 0.8 sones (≈37 dBA, approximate) |
| Airflow | 110 CFM |
| Efficiency | 3.6 CFM/W |
| Duct size | 4.00 inch depth X 0.00 inch width |
| Speeds | 1 |
| Integrated lighting | Yes |
| ENERGY STAR certified | Yes |
| On market since | 2024-06-17 |
| Markets | United States, Canada |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Panasonic Eco Solutions FV-0811RQ1 | 0.1 | 7 | 110 CFM | 5.1 CFM/W | specs |
| Panasonic Eco Solutions FV-0811RQC1 | 0.1 | 7 | 110 CFM | 4.9 CFM/W | specs |
| Fantech SC50-80-110 (484313) | 0.1 | 7 | 110 CFM | 10.7 CFM/W | specs |
| Fantech SC50-80-110H (494140) | 0.1 | 7 | 110 CFM | 10.7 CFM/W | specs |
| Fantech SC50-80-110L (484314) | 0.1 | 7 | 110 CFM | 10.7 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Commercial Electric BF1107 | 0.8 | 37 | 110 CFM | 4.3 CFM/W | specs |
| Commercial Electric BF1109 | 0.8 | 37 | 110 CFM | 4 CFM/W | specs |
| Commercial Electric BF1110 | 0.8 | 37 | 110 CFM | 4 CFM/W | specs |
| Commercial Electric BF1112 | 0.8 | 37 | 110 CFM | 4.2 CFM/W | specs |
| Tech Drive TD-BF-07 | 0.8 | 37 | 110 CFM | 3.8 CFM/W | specs |
Frequently asked questions
How many sones is the Broan RB110L1?
The Broan RB110L1 is certified at 0.8 sones in ENERGY STAR lab testing, which is approximately 37 dBA. That is comparable to a quiet modern refrigerator humming in the next room.
Is the Broan RB110L1 quiet?
At 0.8 sones, the Broan RB110L1 is quieter than 44% of the 811 certified bathroom & utility fans we track, and louder than the category median of 0.7 sones.
How powerful is the Broan RB110L1?
It moves 110 CFM, which is adequate for a bathroom of roughly 110 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 3.6 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.