QuietScore › Bathroom & Utility Fans › Broan RB110
Broan RB110 noise level
The Broan RB110 is quieter 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 | RB110 |
| Model name | Ultra Pro |
| Category | Bathroom & Utility Fans |
| Sound level | 0.4 sones (≈27 dBA, approximate) |
| Airflow | 110 CFM |
| Efficiency | 3.7 CFM/W |
| Duct size | 4 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2014-05-01 |
| Markets | United States |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| AERO PURE ABF110DHL5W | 0.1 | 7 | 110 CFM | 7.4 CFM/W | specs |
| AERO PURE ABF110DHL6W | 0.1 | 7 | 110 CFM | 7.4 CFM/W | specs |
| AUPU AV0511DSL3 | 0.1 | 7 | 110 CFM | 7.4 CFM/W | specs |
| AUPU B6-11HF | 0.1 | 7 | 110 CFM | 9.7 CFM/W | specs |
| AUPU BF6-S13C | 0.1 | 7 | 110 CFM | 9.7 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Broan QTXEG110 | 0.4 | 27 | 110 CFM | 4.7 CFM/W | specs |
| Broan QTXEG110 = QTXEGH with QTXEG110F | 0.4 | 27 | 110 CFM | 4.7 CFM/W | specs |
| Broan QTXEG110S | 0.4 | 27 | 110 CFM | 4.7 CFM/W | specs |
| Broan QTXEG110S = QTXEGSH with QTXEG110SF | 0.4 | 27 | 110 CFM | 4.7 CFM/W | specs |
| Broan QTXEG110SX | 0.4 | 27 | 110 CFM | 4.7 CFM/W | specs |
Frequently asked questions
How many sones is the Broan RB110?
The Broan RB110 is certified at 0.4 sones in ENERGY STAR lab testing, which is approximately 27 dBA. That is about as quiet as rustling leaves; most people cannot hear it over ambient room noise.
Is the Broan RB110 quiet?
At 0.4 sones, the Broan RB110 is quieter than 67% of the 819 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Broan RB110?
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 3.7 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 2026-07-27. The dBA figure is an approximate conversion from sones — see our methodology.