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1357 Defrost Control - Insulation Energy Efficiency - Venting Living Spaces
 
1357 Defrost Control - Insulation Energy Efficiency - Venting Living Spaces -

Image Text: Supply preheat > outside > intake > exhaust > electric duct heater > heat exchanger > Exhaust is recirculated > outside > intake > exhaust > damper (closed) > heat exchanger > damper (closed) > Exhaust fan shut off and fresh air supply is closed > outside > intake > exhaust > warm house air > heat exchanger > STOP > damper (closed) > Fresh air fan shut off - exhaust fan continues to work > outside > intake > exhaust > heat exchanger > STOP

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INSULATION

The Basics, Air/Vapor Barriers (Vapor Retarders), Venting Roofs, Venting Living Spaces, Attics, Flat and Cathedral Roofs, Walls Above Grade, Basements and Crawlspaces, Floors over Unheated Areas, Ventilation Systems

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