QuietScore › Bathroom & Utility Fans › Air King WML50
Air King WML50 noise level
The Air King WML50 is louder 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 | Air King |
|---|---|
| Model number | WML50 |
| Model name | Air King |
| Category | Bathroom & Utility Fans |
| Sound level | 0.8 sones (≈37 dBA, approximate) |
| Airflow | 50 CFM |
| Efficiency | 4.4 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 | 2021-12-10 |
| Markets | United States, Canada |
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 | |
|---|---|---|---|---|---|
| Air King BFQL50 | 0.8 | 37 | 50 CFM | 4.4 CFM/W | specs |
| Broan-Nutone BENL5 | 0.7 | 35 | 50 CFM | 3.4 CFM/W | specs |
| Delta 50F-LED ME | 0.7 | 35 | 50 CFM | 10.8 CFM/W | specs |
| Delta ITG50 ME | 0.7 | 35 | 50 CFM | 12.3 CFM/W | specs |
| Delta ITG50LED ME | 0.7 | 35 | 50 CFM | 10.8 CFM/W | specs |
Frequently asked questions
How many sones is the Air King WML50?
The Air King WML50 is certified at 0.8 sones in ENERGY STAR lab testing, which is approximately 37 dBA. That is comparable to a quiet modern refrigerator humming in the next room.
Is the Air King WML50 quiet?
At 0.8 sones, the Air King WML50 is quieter than 44% of the 811 certified bathroom & utility fans we track, and louder than the category median of 0.7 sones.
How powerful is the Air King WML50?
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 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.