QuietScore › Bathroom & Utility Fans › Dayton 1UBH6B
Dayton 1UBH6B noise level
The Dayton 1UBH6B is quieter than the category median of 0.7 sones, and its 70 CFM rating makes it suitable for bathrooms up to roughly 70 sq ft.
Full specifications
| Brand | Dayton |
|---|---|
| Model number | 1UBH6B |
| Model name | 1UBH6B |
| Category | Bathroom & Utility Fans |
| Sound level | 0.5 sones (≈30 dBA, approximate) |
| Airflow | 70 CFM |
| Efficiency | 4.4 CFM/W |
| Duct size | 6.0 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2008-01-02 |
| Markets | United States |
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 | |
|---|---|---|---|---|---|
| Greenheck SP-B70 | 0.5 | 30 | 70 CFM | 4.4 CFM/W | specs |
| Panasonic RG-S80LHA | 0.5 | 30 | 80 CFM | 9.3 CFM/W | specs |
| Air King AK80LS6 | 0.5 | 30 | 80 CFM | 4.7 CFM/W | specs |
| Air King AK80LS6H | 0.5 | 30 | 80 CFM | 4.7 CFM/W | specs |
| Delta GBR80HLED | 0.5 | 30 | 80 CFM | 7.3 CFM/W | specs |
Frequently asked questions
How many sones is the Dayton 1UBH6B?
The Dayton 1UBH6B is certified at 0.5 sones in ENERGY STAR lab testing, which is approximately 30 dBA. That is about as quiet as rustling leaves; most people cannot hear it over ambient room noise.
Is the Dayton 1UBH6B quiet?
At 0.5 sones, the Dayton 1UBH6B is quieter than 61% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.
How powerful is the Dayton 1UBH6B?
It moves 70 CFM, which is adequate for a bathroom of roughly 70 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.