Thermal Bypasses


Thermal bypasses are indoor pathways that draw warm air upwards, enhancing stack effect and depressurizing the house. They allow inside air to flow directly into the attic.  Some Thermal Bypasses:  

  • Recessed lighting fixtures
  • Air gap around chimneys
  • Plumbing chases
  • Balloon frame walls
  • Non-mechanical attic vents  

As warm air flows up through the thermal bypasses, the rest of the house is depressurized.