As of July 2017, the Florida Building Code requires all new residential builds to undergo a blower door test, with air infiltration rates under seven air changes per hour at 50 pascals (ACH50).
A higher air change rate means more outside air is seeping into your home, affecting indoor air quality and energy consumption.
The blower door test is a diagnostic method that measures a building’s air tightness by detecting air leaks and estimating energy efficiency. A high-capacity fan is attached to a door or window to pressurize or depressurize the home, creating a pressure difference between the inside and outside.
That pressure difference reveals leaks in the building envelope, such as cracks, gaps around windows and doors, and other air passage points. A manometer measures the fan’s airflow (CFM50) and the pressure difference, showing how airtight the home is and how much air is leaking.
Building inspectors also use these tests to verify that homes meet energy regulations and air tightness standards.
Our Tampa Bay team provides blower door testing for contractors and builders who need to pass Florida energy inspections on the first attempt, and for homeowners who want to find air leaks and improve energy efficiency.
By finding and sealing air leaks, you can lower energy costs, improve indoor air quality, and extend the lifespan of your home. Testing also helps reduce callbacks and supports R402, R403, and R405 compliance. For ductwork, we also offer duct leakage testing.
Calc Wizards is led by owner Mike Smith, a state certified contractor with more than 25 years of HVAC experience, and has completed over 1,000 projects.
