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Brian Simmons is a senior technical sales support specialist at RenewAire, Waunakee, Wis., a manufacturer of residential and commercial energy recovery ventilators (ERV) and dedicated outdoor air systems (DOAS). Simmons grew up in a Columbus, Ind. family HVAC business and also worked in wholesale HVAC distribution while teaching HVACR at Ivy Tech Community College of Indiana–Columbus for 10 years. He’s EPA-certified through RSES and is an ASHRAE member. He can be reached at bsimmons@renewaire.com.
Sizing, positioning and ducting an ERV to bathroom vents, not only circumvents traditional fans, but introduces clean outdoor air strategically balanced to the exhaust-CFMs.
A common bathroom exhaust ducting mistake is reducing the 6-inch ERV take offs to the 4-inch duct that’s commonly used in bathroom fans. Reducing would cut the potential CFMs approximately 20 percent or more.