This image shows significant energy loss from open windows:

This image shows air leakage under a double door:

These three images show water evaporating after a building water leak. The process of evaporation will reduce temperature below ambient and therefore show as a temperature differential.

Window seals and casement filling are often weak areas with excessive air infiltration.

This image shows significant energy loss from open windows:

This image shows air leakage under a double door:

These three images show water evaporating after a building water leak. The process of evaporation will reduce temperature below ambient and therefore show as a temperature differential.

Window seals and casement filling are often weak areas with excessive air infiltration.