QuietScore › Bathroom & Utility Fans › Broan L100E
Broan L100E noise level
The Broan L100E is quieter than the category median of 0.7 sones, and its 140 CFM rating makes it suitable for bathrooms up to roughly 140 sq ft.
Full specifications
| Brand | Broan |
|---|---|
| Model number | L100E |
| Model name | LIGHT COMMERCIAL |
| Category | Bathroom & Utility Fans |
| Sound level | 0.3 sones (≈23 dBA, approximate) |
| Airflow | 140 CFM |
| Efficiency | 5.5 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 | |
|---|---|---|---|---|---|
| Panasonic FV-1115VK3 | 0.1 | 7 | 150 CFM | 13.7 CFM/W | specs |
| Panasonic FV-1115VK3 with FV-VS15VK1 | 0.1 | 7 | 150 CFM | 13.7 CFM/W | specs |
| Panasonic FV-1115VKL3 | 0.1 | 7 | 150 CFM | 12.2 CFM/W | specs |
| Panasonic FV-1115VKL3 with FV-VS15VK1 | 0.1 | 7 | 150 CFM | 12.2 CFM/W | specs |
| Panasonic FV-1115VQ1 | 0.1 | 7 | 150 CFM | 12.9 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| S&P PCD110XP | 0.3 | 23 | 140 CFM | 11.5 CFM/W | specs |
| ACIQ AEPD140-3 | 0.3 | 23 | 140 CFM | 11.5 CFM/W | specs |
| CFM TF140-EC | 0.3 | 23 | 140 CFM | 11.5 CFM/W | specs |
| Haier QVE110DTWW | 0.3 | 23 | 140 CFM | 11.5 CFM/W | specs |
| Ortech ODD-110-18PB | 0.3 | 23 | 140 CFM | 11.5 CFM/W | specs |
Frequently asked questions
How many sones is the Broan L100E?
The Broan L100E 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 L100E quiet?
At 0.3 sones, the Broan L100E is quieter than 75% of the 839 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Broan L100E?
It moves 140 CFM, which is adequate for a bathroom of roughly 140 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 5.5 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 2026-09-07. The dBA figure is an approximate conversion from sones — see our methodology.