Whether it's summer or winter, energy moves through the walls,
roof and cracks of your home. Either the cold air conditioned air is lost to the outside or the cold winter air is finding its way into your home.
Where does a home lose heat energy? Well you can generally categorize it into five areas:
- Ceilings
- Walls
- Floors and Below Grade Space
- Windows and Doors
- Infiltration (air leakage)
No, these are not all the same in terms of their contribution to heat loss. Heat is lost to infiltration and air loss by over 3 times the amount it is lost due to ceilings. These categories generally stack up this way in terms of % heat loss in a home:
- Infiltration / Air Leakage: 35%
- Windows and Doors: 18%-20%
- Floors and Below Grade Space: 15%-18%
- Walls: 12%-14%
- Ceilings: 10%
