If your home has thin walls, an older entry door, or minimal attic insulation, you are losing conditioned air faster than your HVAC can keep up. Adding a storm door creates a critical buffer zone that cuts infiltration and heat transfer at one of your home’s most vulnerable points.
Most homes lose a surprising amount of heat through the attic, not because of missing insulation, but because air is sneaking out through gaps and cracks before insulation even gets a chance to work. Spend one weekend air sealing and adding attic insulation, and you could cut your heating bill by 15 to 20% while making your home noticeably more comfortable.