Who can do a blower door test?

Who can do a blower door test includes qualified building performance professionals who have training, certification, and calibrated equipment. Typically tests are performed by BPI Building Analysts certified by Building Performance Institute, RESNET HERS Raters certified by Residential Energy Services Network, and home energy auditors employed by energy audit companies or weatherization agencies. These professionals have completed coursework on building science, air sealing, combustion safety, and operation of blower door equipment like Minneapolis Blower Door or Retrotec systems. For low-income Weatherization Assistance Program, blower door tests are performed by technicians from local Community Action Agencies. For new construction code compliance, tests must be done by an independent third party, usually a HERS Rater or certified code inspector who is not employed by builder to ensure objectivity. HVAC contractors, insulation contractors, and general contractors with training may also offer testing. To find a qualified tester, check RESNET or BPI directories, ask your utility company for approved contractor list, or contact local weatherization agency. Look for certification, calibrated equipment, and experience with combustion safety testing.