Ventilating Fans Specification Version 4.0

The ENERGY STAR specification for Ventilating Fans is currently under revision. Materials related to this revision process are provided below. Partners and other interested parties with questions or concerns regarding these materials or the revision process can contact Abigail Daken, EPA, at This webpage will be updated periodically as new information is received.

ENERGY STAR Ventilating Fans Version 4.0 Specification (Rev. Oct-2017) – October 23, 2017

EPA updated Section 3Ab of the specification to clarify that bathroom and utility room fans, and in-line fans, with more than three speeds must be tested and meet the applicable efficacy and sounds requirements at their minimum and maximum speeds, and at a speed half-way in between those.

ENERGY STAR Ventilating Fans V4.0 Clarification - January 26, 2016
EPA Cover Memo (PDF, 94 KB)

ENERGY STAR Ventilating Fans V4.0 Final - December 29, 2014

Ventilation Fans Version 4.0 Final Draft - December 4, 2014
Air King Comments (PDF, 195 KB)
Broan NuTone Comments (PDF, 1.0 MB)
Delta Comments (PDF, 69 KB)
HVI Comments (PDF, 103 KB)
NAHB Comments (PDF, 143 KB)
Nedfon Comments (PDF, 228 KB)
Panasonic Comments (PDF, 173 KB)
Systemair Comments (PDF, 130 KB)

Ventilation Fans Version 4.0 Interim Proposal - October 27, 2014

Ventilation Fans Version 4.0 Draft 1 Stakeholder Comments - July 31, 2014
Air King Comments (PDF, 137 KB)
Broan-NuTone Comments (PDF, 1.1 MB)
Delta Comments (PDF, 76 KB)
HVI Comments (PDF, 109 KB)
Panasonic Comments (PDF, 121 KB)

ENERGY STAR Draft 1 Version 4.0 Ventilating Fans Webinar Slides - July 10, 2014

Ventilation Fans Version 4.0 Draft 1 - June 11, 2014