QuietScore › Bathroom & Utility Fans › Tech Drive TD-BF-11
Tech Drive TD-BF-11 noise level
The Tech Drive TD-BF-11 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 | Tech Drive |
|---|---|
| Model number | TD-BF-11 |
| Model name | TD |
| Category | Bathroom & Utility Fans |
| Sound level | 1.5 sones (≈46 dBA, approximate) |
| Airflow | 90 CFM |
| Efficiency | 4 CFM/W |
| Duct size | 4.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2024-05-24 |
| 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 |
| 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 |
| Akicon AK1390N2-S | 1.5 | 46 | 90 CFM | 4.2 CFM/W | specs |
Frequently asked questions
How many sones is the Tech Drive TD-BF-11?
The Tech Drive TD-BF-11 is certified at 1.5 sones in ENERGY STAR lab testing, which is approximately 46 dBA. That is noticeable but unobtrusive — quieter than a typical conversation.
Is the Tech Drive TD-BF-11 quiet?
At 1.5 sones, the Tech Drive TD-BF-11 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 Tech Drive TD-BF-11?
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 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.