QuietScore › Bathroom & Utility Fans › Broan RB80L1
Broan RB80L1 noise level
The Broan RB80L1 is quieter than the category median of 0.7 sones, and its 80 CFM rating makes it suitable for bathrooms up to roughly 80 sq ft.
Full specifications
| Brand | Broan |
|---|---|
| Model number | RB80L1 |
| Model name | ULTRA PRO |
| Category | Bathroom & Utility Fans |
| Sound level | 0.3 sones (≈23 dBA, approximate) |
| Airflow | 80 CFM |
| Efficiency | 2.9 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 | 2024-08-05 |
| Markets | United States, Canada |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Broan XB80=XB00HwithXB80F | 0.1 | 7 | 80 CFM | 13.8 CFM/W | specs |
| Greenheck SP-A70 | 0.1 | 7 | 70 CFM | 5.1 CFM/W | specs |
| Greenheck SP-A90L | 0.1 | 7 | 99 CFM | 6.1 CFM/W | specs |
| 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 |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| S&P PCD80XHP ME | 0.3 | 23 | 80 CFM | 14.4 CFM/W | specs |
| Broan 744L | 0.3 | 23 | 80 CFM | 2.9 CFM/W | specs |
| Broan RB80 | 0.3 | 23 | 80 CFM | 3 CFM/W | specs |
| Broan XB80 | 0.3 | 23 | 80 CFM | 13.8 CFM/W | specs |
| Nutone 744RNL | 0.3 | 23 | 80 CFM | 2.9 CFM/W | specs |
Frequently asked questions
How many sones is the Broan RB80L1?
The Broan RB80L1 is certified at 0.3 sones in ENERGY STAR lab testing, which is approximately 23 dBA. That is near the threshold of human hearing — effectively silent in a normal room.
Is the Broan RB80L1 quiet?
At 0.3 sones, the Broan RB80L1 is quieter than 75% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Broan RB80L1?
It moves 80 CFM, which is adequate for a bathroom of roughly 80 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 2.9 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.