QuietScore › Bathroom & Utility Fans › Air King AK90
Air King AK90 noise level
The Air King AK90 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 | AK90 |
| Model name | N/A |
| Category | Bathroom & Utility Fans |
| Sound level | 1.6 sones (≈47 dBA, approximate) |
| Airflow | 90 CFM |
| Efficiency | 3.7 CFM/W |
| Duct size | 4 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2015-10-01 |
| 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 Eco Solutions RG-V80A | 1.5 | 46 | 90 CFM | 4.3 CFM/W | specs |
| Tech Drive TD-BF-11 | 1.5 | 46 | 90 CFM | 4 CFM/W | specs |
| Air King FR90 | 1.5 | 46 | 90 CFM | 3.7 CFM/W | specs |
| Akicon AK1390N1-W/B/S | 1.5 | 46 | 90 CFM | 4.1 CFM/W | specs |
| Akicon AK1390N2-B | 1.5 | 46 | 90 CFM | 4.2 CFM/W | specs |
Frequently asked questions
How many sones is the Air King AK90?
The Air King AK90 is certified at 1.6 sones in ENERGY STAR lab testing, which is approximately 47 dBA. That is about the background level of a quiet office.
Is the Air King AK90 quiet?
At 1.6 sones, the Air King AK90 is quieter than 11% 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 AK90?
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 3.7 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.