 ##  [Envelope-HVAC Interaction](/envelope-hvac-interaction) 

  ##  [Envelope-HVAC Interaction](https://engineering.quantumdictionary.io/envelope-hvac-interaction-0) 

  
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**Engineering &amp; Applied Technologies Dictionary**

 
Definition

The interdependent relationship between a building’s enclosure (thermal insulation, glazing, airtightness, moisture control, solar exposure) and HVAC system design, controls, and performance, where enclosure characteristics determine thermal loads, infiltration, and hygrothermal risk while HVAC affects interior pressure, humidity and temperature regimes that influence enclosure behavior.