QuietScore › Bathroom & Utility Fans › Panasonic RG-S100A
Panasonic RG-S100A noise level
The Panasonic RG-S100A is louder than the category median of 0.7 sones, and its 100 CFM rating makes it suitable for bathrooms up to roughly 100 sq ft.
Full specifications
| Brand | Panasonic |
|---|---|
| Model number | RG-S100A |
| Model name | Whisper Slim |
| Category | Bathroom & Utility Fans |
| Sound level | 1.1 sones (≈41 dBA, approximate) |
| Airflow | 100 CFM |
| Efficiency | 7.6 CFM/W |
| Duct size | 4.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2023-10-01 |
| Markets | United States |
Quieter alternatives with similar airflow
| Model | Sones | ≈ dBA | Airflow | Efficiency | |
|---|---|---|---|---|---|
| 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 |
| Greenheck SP-LP0810WL | 0.1 | 7 | 100 CFM | 9.5 CFM/W | specs |
| Venco SP-LP0810W | 0.1 | 7 | 100 CFM | 10 CFM/W | specs |
| Venco 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-N110LHA | 1.1 | 41 | 110 CFM | 9.5 CFM/W | specs |
| AERO PURE ABF110G16W | 1.1 | 41 | 110 CFM | 4.4 CFM/W | specs |
| Air King AK110LS6 | 1.1 | 41 | 110 CFM | 3.9 CFM/W | specs |
| AUPU AV11A3 | 1.1 | 41 | 110 CFM | 4.4 CFM/W | specs |
| Miseno MBF110AWH | 1.1 | 41 | 110 CFM | 4.4 CFM/W | specs |
Frequently asked questions
How many sones is the Panasonic RG-S100A?
The Panasonic RG-S100A is certified at 1.1 sones in ENERGY STAR lab testing, which is approximately 41 dBA. That is noticeable but unobtrusive — quieter than a typical conversation.
Is the Panasonic RG-S100A quiet?
At 1.1 sones, the Panasonic RG-S100A is quieter than 28% of the 811 certified bathroom & utility fans we track, and louder than the category median of 0.7 sones.
How powerful is the Panasonic RG-S100A?
It moves 100 CFM, which is adequate for a bathroom of roughly 100 sq ft under the standard 1-CFM-per-square-foot guideline, at an efficiency of 7.6 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.