QuietScore › Bathroom & Utility Fans › Broan XB50L1
Broan XB50L1 noise level
The Broan XB50L1 is quieter than the category median of 0.7 sones, and its 50 CFM rating makes it suitable for bathrooms up to roughly 50 sq ft.
Full specifications
| Brand | Broan |
|---|---|
| Model number | XB50L1 |
| Model name | ULTRA GREEN |
| Category | Bathroom & Utility Fans |
| Sound level | 0.2 sones (≈17 dBA, approximate) |
| Airflow | 50 CFM |
| Efficiency | 11.8 CFM/W |
| Duct size | 6.00 inch depth X 0.00 inch width |
| Speeds | 1 |
| Integrated lighting | Yes |
| ENERGY STAR certified | Yes |
| On market since | 2022-04-01 |
| Markets | United States |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Greenheck SP-A70 | 0.1 | 7 | 70 CFM | 5.1 CFM/W | specs |
| Broan XB80=XB00HwithXB80F | 0.1 | 7 | 80 CFM | 13.8 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 | |
|---|---|---|---|---|---|
| Broan XB50=XB00HwithXB50F | 0.2 | 17 | 50 CFM | 11.8 CFM/W | specs |
| Air King LEDAK50 | 0.3 | 23 | 50 CFM | 4.4 CFM/W | specs |
| Broan XB50 | 0.3 | 23 | 50 CFM | 11.8 CFM/W | specs |
| Greenheck SP-B50L | 0.3 | 23 | 59 CFM | 3.8 CFM/W | specs |
| S&P PC50XP | 0.4 | 27 | 50 CFM | 4 CFM/W | specs |
Frequently asked questions
How many sones is the Broan XB50L1?
The Broan XB50L1 is certified at 0.2 sones in ENERGY STAR lab testing, which is approximately 17 dBA. That is near the threshold of human hearing — effectively silent in a normal room.
Is the Broan XB50L1 quiet?
At 0.2 sones, the Broan XB50L1 is quieter than 84% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Broan XB50L1?
It moves 50 CFM, which is adequate for a bathroom of roughly 50 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 11.8 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.