QuietScore › Bathroom & Utility Fans › Air King AK90LS6
Air King AK90LS6 noise level
The Air King AK90LS6 is louder than the category median of 0.7 sones, and its 90 CFM rating makes it suitable for bathrooms up to roughly 90 sq ft.
Full specifications
| Brand | Air King |
|---|---|
| Model number | AK90LS6 |
| Model name | Air King |
| Category | Bathroom & Utility Fans |
| Sound level | 0.8 sones (≈37 dBA, approximate) |
| Airflow | 90 CFM |
| Efficiency | 4.5 CFM/W |
| Duct size | 6.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2022-04-22 |
| Markets | United States, Canada |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| 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 |
| Broan XB80=XB00HwithXB80F | 0.1 | 7 | 80 CFM | 13.8 CFM/W | specs |
| Greenheck SP-LP0810W | 0.1 | 7 | 100 CFM | 10 CFM/W | specs |
| Greenheck SP-LP0810WL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
Similar bathroom & utility fans
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| Panasonic RG-M79LA | 0.8 | 37 | 90 CFM | 4.1 CFM/W | specs |
| Tech Drive TD-BF-02 | 0.8 | 37 | 90 CFM | 3.9 CFM/W | specs |
| BV BV-BF-01-PLUS | 0.8 | 37 | 90 CFM | 4.8 CFM/W | specs |
| BV BV-BF-05 | 0.8 | 37 | 90 CFM | 4.8 CFM/W | specs |
| Dayton 5AE68B | 0.8 | 37 | 90 CFM | 4.3 CFM/W | specs |
Frequently asked questions
How many sones is the Air King AK90LS6?
The Air King AK90LS6 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 AK90LS6 quiet?
At 0.8 sones, the Air King AK90LS6 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 AK90LS6?
It moves 90 CFM, which is adequate for a bathroom of roughly 90 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 4.5 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 2026-06-13. The dBA figure is an approximate conversion from sones — see our methodology.