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Basics & Theory

HVI: Consumer Guide For Bathroom Exhaust Fans
Home Ventilating Institute consumer guide includes information on why bathroom fans are necessary in all homes, what function bathroom exhaust fans serve, what to look for when purchasing a bathroom exhaust fan, and more.
Issues & Performance

Building America: Bathroom Fan Ratings
Building America describes issues and considerations around ratings for bathroom fans.

Building Science: Exhaust-Only Ventilation Does Not Work
Building Science says exhaust-only ventilation does not work in tight building enclosures and certainly not in new houses, apartments, townhouses and row houses.

CAN/CSA-C260-M90 (R2007) Rating Performance of Residential Mechanical Ventilating Equipment
CAN/CSA-C260-M90 (R2007) Rating Performance of Residential Mechanical Ventilating Equipment standard establishes a uniform method to determine air movement characteristics; and to measure sound output of residential mechanical ventilation equipment.

CAN/CSA-F326-M91 (R2014) Residential Mechanical Ventilation Systems
CAN/CSA-F326-M91 (R2014) Residential Mechanical Ventilation Systems standard defines requirements for performance, installation and application, and performance verification of mechanical ventilation systems.

Energy Star Canada: Qualifying Criteria For Ventilating Fans
Natural Resources Canada outlines qualifying criteria for Energy Star residential ceiling or wall-mounted fans, in-line fans, and kitchen range hoods. (PDF)

Energy Vanguard: 5 Reasons Bath Fans Have Such Poor Air Flow
Energy Vanguard describes, with pictures, 5 reasons why many bath fans have such poor air flow.

Energy Vanguard: Do You Really Need to Run Bath Fan in Winter?
Energy Vanguard says if the bath fan is part of your whole-house ventilation, you don't want to turn it off in winter.

Fine Homebuilding: Exhaust Fans Should Not Be Ducted To Soffits
Fine Homebuilding Q & A describes why exhaust fan ducts should not be vented to or through a soffit.

HVI: 915 Procedure For Loudness Rating Of Residential Fan Products
Home Ventilation Institute standard 915 Procedure For Loudness Rating Of Residential Fan Products specifies prescriptively HVI procedures for sound testing and loudness rating in sones for residential ventilating products, in accordance with (ANSI) consensus standards. (PDF)

HVI: 916 Airflow Test Standard
Home Ventilation Institute standard HVI 916 Airflow Test Standard specifies HVI procedures for testing and rating airflow in residential ventilating products in accordance with (ANSI) consensus standards. (PDF)

ACCA Now: Proper Bathroom Ventilation & Your Health
ACCA Now says many homeowners have come to recognize the importance of bathroom ventilation, for obvious reasons. But what many people don't realize is that beyond disagreeable odors, there are also significant health risks associated with improper bathroom ventilation.

Canadian Contractor: Bathroom Ventilation Facts & Fiction
Canadian Contractor describes some steps in properly selecting the correct bathroom exhaust fan.

CCHRC: Best Practices for Bathroom Fans in Cold Climates
Cold Climate Housing Research Center describes best practices for installing bathroom fans in cold climates. (PDF)

Energy Vanguard: Installing Exhaust Fan During Bathroom Remodel
Energy Vanguard describes how to install an exhaust fan during a bathroom remodel.

Fine Homebuilding: Bath Fan Venting for Cold Climates
Fine Homebuilding says common solutions to a bath fan icing problem are to use a higher-powered fan, use a larger-diameter, shorter duct run, and wrap the pipe with better duct insulation.

GBA: Bathroom Exhaust Fans May Satisfy Whole-House Ventilation Requirements
Green Building Advisor says bath fans help remove odors and moisture and can be used in some homes to satisfy whole-house ventilation requirements.

GBA: Exhaust-Only Ventilation Can Be Best In Some Cases
Green Building Advisor summarizes a study that shows exhaust-only ventilation systems can be a very effective, low-cost ventilation option.

QR: Selecting & Placing Bathroom Fans
Qualified Remodeler article covers selection & placement of bathroom fans including proper sizing, fan placement, and fan types.

US DOE: Air Sealing Bathroom & Kitchen Exhaust Fans
Building America Solution Center online guide describes how to air seal bathroom and kitchen exhaust fans.

US DOE: Installing Bathroom Exhaust Fan
Building America Solution Center online guide describes how to install a bathroom fan.
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