How Does Energy Recovery Ventilation Work? | This Old House

Richard Trethewey shows how Energy Recovery Ventilation works by using different colors of smoke to follow the air flow through an ERV unit. #ThisOldHouse #AskTOH SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse Energy recovery ventilation units keep fresh air in the house without sacrificing the energy used to heat or cool the air. About This Old House TV: This Old House is the No. 1 multimedia home enthusiast brand, offering trusted information and expert advice through award-winning television, a highly regarded magazine, and an information-driven website. This Old House and Ask This Old House are produced by This Old House Ventures, LLC and are presented on PBS by WNET Washington. Follow This Old House and Ask This Old House: Facebook: http://bit.ly/ThisOldHouseFB Twitter: http://bit.ly/ThisOldHouseTwitter http://bit.ly/AskTOHTwitter Pinterest: http://bit.ly/ThisOldHousePinterest Instagram: http://bit.ly/ThisOldHouseIG Tumblr: http://bit.ly/ThisOldHouseTumblr How Does Energy Recovery Ventilation Work? | This Old House https://www.youtube.com/user/thisoldhouse/