QuietScore › Bathroom & Utility Fans › Nektra 33003851
Nektra 33003851 noise level
The Nektra 33003851 is louder 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 | Nektra |
|---|---|
| Model number | 33003851 |
| Model name | 33003851 |
| Category | Bathroom & Utility Fans |
| Sound level | 1 sone (≈40 dBA, approximate) |
| Airflow | 70 CFM |
| Efficiency | 3.4 CFM/W |
| Duct size | 4.00 inch diameter |
| Speeds | 1 |
| Integrated lighting | No |
| ENERGY STAR certified | Yes |
| On market since | 2025-08-30 |
| Markets | United States, Canada |
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 | |
|---|---|---|---|---|---|
| Delta 70BT ME | 1 | 40 | 70 CFM | 10.6 CFM/W | specs |
| Delta ITG70BT ME | 1 | 40 | 70 CFM | 10.6 CFM/W | specs |
| HomeWerks Worldwide 7105-10 | 1 | 40 | 70 CFM | 3.4 CFM/W | specs |
| HomeWerks Worldwide 7105-10-MB | 1 | 40 | 70 CFM | 3.4 CFM/W | specs |
| Tuscany 7105-11-M | 1 | 40 | 70 CFM | 3.4 CFM/W | specs |
Frequently asked questions
How many sones is the Nektra 33003851?
The Nektra 33003851 is certified at 1 sone in ENERGY STAR lab testing, which is approximately 40 dBA. That is comparable to a quiet modern refrigerator humming in the next room.
Is the Nektra 33003851 quiet?
At 1 sone, the Nektra 33003851 is quieter than 30% of the 811 certified bathroom & utility fans we track, and louder than the category median of 0.7 sones.
How powerful is the Nektra 33003851?
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 3.4 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.