BLOW DOOR SCORE

A blower door score is a measure of how airtight or energy-efficient a building is. It’s determined through a blower door test, which involves using a large fan to depressurize the home and measuring the amount of air that leaks in through cracks and gaps. The score indicates the rate of air leakage, typically represented in cubic feet per minute (CFM) per 100 square feet of building area.

The lower the blower door score, the more airtight the building is, which usually means better energy efficiency. A lower score can result in lower heating and cooling costs, improved comfort, and reduced environmental impact. High leakage could indicate that the building is losing energy, leading to higher utility bills and potential issues with temperature control #AltadenaStrong #LAStrong #FireHarden #PassiveHouse #LowerCostOfOwnership #BuildBackAltadenaBetter