Air Infiltration can account for 5-40% of conditioning costs. Reducing air infiltration can be difficult, but is widely considered to be the first and most important step towards managing your home’s energy and comfort. Air infiltration is controlled by what is referred to as the air barrier of the home. The thermal boundary consists of the air barrier and insulation barrier. An energy efficient home has its air barrier and insulation barrier touching and continuous.
When replacing energy features in a home, there is a tough balance between: efficiency, cost, comfort, and features. In comes the Trane XV95. It is not the most feature pack and efficient furnace, however it does give you the most bang for your buck.