Code Compliance Testing

Code compliance testing (duct & envelope) is performed for builders and HVAC contractors who need to meet legal requirements. It’s also part of our ENERGY STAR® certification process, as well as available for homeowners who want to determine and ensure the energy efficiency of their homes. All services are provided by certified professionals.

Duct tests are performed to assess potential leakage and determine if a system meets code and program requirements. Building and energy codes require leakage testing for all residential duct systems (except those located entirely within a home’s thermal envelope). 

These tests are executed on each duct system individually, and require all register boots to be taped or otherwise sealed for the duration of testing. When a home passes the test, our technicians post a duct test certificate in the home for city inspection. Find more information on duct leakage testing here.

Blower door tests determine the air infiltration rate of a building. A blower door is a powerful fan that mounts into the frame of an exterior door. The fan pulls air out of the house, lowering the air pressure inside. The higher pressure outside air then flows in through all unsealed cracks and openings. 

ESG’s blower door testing services are performed to determine air leakage and help builders meet code and program requirements for air infiltration and tightness. Some reasons to establish proper building tightness:Blower door

  • Reducing energy consumption due to air leakage
  • Avoiding moisture condensation problems
  • Preventing uncomfortable drafts caused by cold air leaking in
  • Determining how much mechanical ventilation might be needed to provide acceptable indoor air quality