|Airflow (cfm)||Minimum Efficacy Level (cfm/W)*|
|Range Hoods — up to 500 cfm (max)||2.8|
|Bathroom and Utility Room Fans — 10 to 89 cfm||1.4|
|Bathroom and Utility Room Fans — 90 to 500 cfm (max)||2.8|
|In–Line (single–port & multi–port) Fans||2.8|
|Airflow (cfm)||Maximum Allowable Sound Level (Sones)*|
|Range Hoods — up to 500 cfm (max)||2.0|
|Bathroom and Utility Room Fans — 10 to 139 cfm||2.0|
|Bathroom and Utility Room Fans — 140 to 500 cfm (max)||3.0|
|Airflow (cfm)||Rated Airflow (0.25 in. w.g.)|
|Bathroom and Utility Room Fans — 10 to 89 cfm||60%|
|Bathroom and Utility Room Fans — 90 to 500 cfm||70%|
Residential Ventilating Fan:
A ceiling, wall–mounted, or remotely mounted in–line fan designed to be used in
a bathroom or utility room, or a kitchen range hood, whose purpose is to move objectionable air from inside the building to the outdoors. Residential ventilating fans used for cooling (e.g., whole–house fans) or air circulation are excluded. Heat/energy recovery ventilation fans ducted to the ventilated space and powered attic ventilators (e.g., gable fans) are excluded, but may be considered in a future version of this specification. Residential ventilating fans with heat lamps are excluded from this specification. This specification does not address passive ventilation of any kind.
A residential ventilating fan that contains a light source for general lighting and/or a night light.
In–line Ventilating Fan:
A fan designed to be located within the building structure and that requires ductwork on both intake and exhaust. Those in–line fans with only one intake are referred to as "single port" in–line fans, while those with multiple intake ports are referred to as "multi–port" in–line fans in this specification.
Testing and Certification:
HVI 915, "HVI (Home Ventilating Institute) Procedure for Loudness Rating of Residential Fan Products":
Procedure used for testing and rating ventilating fan products for sound. This test procedure includes laboratory requirements and methods for obtaining sound pressure, sound power, and sone values.
HVI 916, "HVI Airflow Test Procedure":
Procedure that establishes uniform methods for laboratory testing of powered residential ventilating equipment for airflow rate. This publication covers the test equipment, tests of specific HVI classification groups, and test reports for maintaining the standard.
HVI 920, "HVI Product Performance Certification Procedure Including Verification and Challenge":
Publication that describes HVI's certification, verification, and challenge testing procedures.
ANSI/AMCA Standard 210–07, "Laboratory Methods of Testing Fans for Certified Aerodynamic Performance Rating":
This ANSI/AMCA standard defines uniform methods for conducting laboratory tests on housed fans to determine airflow rate, pressure, power and efficiency, at a given speed of rotation.
ANSI/AMCA Standard 300–08, "Reverberant Room Method for Sound Testing of Fans":
This ANSI/AMCA standard applies to fans of all types and sizes. It is limited to the determination of airborne sound emission for the specified setups.
AMCA Publication 311–05, "Certified Ratings Program — Product Rating Manual for Fan Sound Performance":
Publication that prescribes and establishes specifications to be used in connection with the AMCA Certified Ratings Program for the sound performance of fans. This document covers the actual testing, the certification process, the challenge procedures and the use of the AMCA Certified Ratings seal.