What is a Blower Door & Duct Test?

A blower door test measures a building’s air tightness by using a powerful fan to create a pressure difference between the inside and outside. It helps identify areas of air leakage and assesses overall energy efficiency.

A duct test measures the air leakage in a building’s HVAC ductwork system. By pressurizing or depressurizing the ducts, it identifies areas of leakage that may require sealing or repair to improve energy efficiency and system performance.