QuietScore › Bathroom & Utility Fans › Broan L300E
Broan L300E noise level
The Broan L300E is louder than the category median of 0.7 sones, and its 310 CFM rating makes it suitable for bathrooms up to roughly 310 sq ft.
Full specifications
| Brand | Broan |
|---|---|
| Model number | L300E |
| Model name | LIGHT COMMERCIAL |
| Category | Bathroom & Utility Fans |
| Sound level | 2.5 sones (≈53 dBA, approximate) |
| Airflow | 310 CFM |
| Efficiency | 4.4 CFM/W |
| Duct size | 8.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2022-11-16 |
| Markets | United States, Canada |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Broan L200E | 1 | 40 | 240 CFM | 4.7 CFM/W | specs |
| Ortech ODD-300-3 | 1.2 | 43 | 292 CFM | 6.5 CFM/W | specs |
| Greenheck SP-A200L | 1.3 | 44 | 245 CFM | 4.3 CFM/W | specs |
| Broan L250E | 1.4 | 45 | 270 CFM | 4.6 CFM/W | specs |
| Dayton 5AE72A | 1.4 | 45 | 240 CFM | 4.3 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Greenheck SP-A250L | 2.5 | 53 | 269 CFM | 4.2 CFM/W | specs |
| Air King AK280LS | 2.8 | 55 | 280 CFM | 4.3 CFM/W | specs |
| Delta Pro300 | 2 | 50 | 300 CFM | 7.4 CFM/W | specs |
| Dayton 3DPE6A | 2.2 | 51 | 270 CFM | 4.3 CFM/W | specs |
| Greenheck SP-A250 | 2.2 | 51 | 270 CFM | 4.3 CFM/W | specs |
Frequently asked questions
How many sones is the Broan L300E?
The Broan L300E is certified at 2.5 sones in ENERGY STAR lab testing, which is approximately 53 dBA. That is clearly audible, similar to a television at low volume.
Is the Broan L300E quiet?
At 2.5 sones, the Broan L300E is quieter than 0% of the 811 certified bathroom & utility fans we track, and louder than the category median of 0.7 sones.
How powerful is the Broan L300E?
It moves 310 CFM, which is adequate for a bathroom of roughly 310 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 4.4 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.