Infiltration – The uncontrolled inward air leakage through cracks and holes in the building envelope and around windows and doors of a building. Its typically caused by the pressure effects of wind and/or the effect of differences in the indoor and outdoor air density. This can be a garage door opening or even a light breeze against a garage door, a forced air heating and cooling system, or unbalanced pressures room to room in a home.
This time of year, comfort issues in your home are highlighted while we all try to stay warm. A breeze running down a wall, under a door, or from an attic access makes it really hard to be comfortable. This comfort issue is a big signal that you have energy-efficiency issues in your home. Finding the leaks and plugging the leaks will not only make your home more comfortable, it will reduce your monthly electric bills. The best way to find the leaks is doing a blower door test and using thermal imaging technology. However, a smoke stick or even a candle can identify the big leaks.