QuietScoreBathroom & Utility Fans › ACIQ ANP50

ACIQ ANP50 noise level

The ACIQ ANP50 is certified at 0.4 sones (≈27 dBA) — quieter than 66% of the 811 bathroom & utility fans in the ENERGY STAR database. In practical terms it is about as quiet as rustling leaves; most people cannot hear it over ambient room noise.
0.4sones (certified)
≈27 dBAapproximate conversion
50 CFMairflow
4CFM per watt

The ACIQ ANP50 is quieter than the category median of 0.7 sones, and its 50 CFM rating makes it suitable for bathrooms up to roughly 50 sq ft.

Full specifications

BrandACIQ
Model numberANP50
Model nameANP
CategoryBathroom & Utility Fans
Sound level0.4 sones (≈27 dBA, approximate)
Airflow50 CFM
Efficiency4 CFM/W
Duct size4.00 inch diameter
Speeds1
Integrated lightingNo
ENERGY STAR certifiedYes
On market since2023-03-31
MarketsUnited 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
S&P PC50XP 0.4 27 50 CFM 4 CFM/W specs
ACIQ AP50 0.4 27 50 CFM 3.3 CFM/W specs
Cyclone CBP50 0.4 27 50 CFM 4 CFM/W specs
Ortech ODE-5004 0.4 27 50 CFM 3.4 CFM/W specs
Air King AK50S 0.5 30 50 CFM 4.1 CFM/W specs

Frequently asked questions

How many sones is the ACIQ ANP50?

The ACIQ ANP50 is certified at 0.4 sones in ENERGY STAR lab testing, which is approximately 27 dBA. That is about as quiet as rustling leaves; most people cannot hear it over ambient room noise.

Is the ACIQ ANP50 quiet?

At 0.4 sones, the ACIQ ANP50 is quieter than 66% of the 811 certified bathroom & utility fans we track, and quieter than the category median of 0.7 sones.

How powerful is the ACIQ ANP50?

It moves 50 CFM, which is adequate for a bathroom of roughly 50 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.