Energy Efficiency Once the blower door test is complete the crew will take apart the blower door test. After going over your assessment findings, our team will explain the course of action they will take to make your home more comfortable. Frequently our team helps seal up air ducts in the attic. Common areas needing help are air ducts and HVAC systems. Another common practice is installing door sweeps. Sealing around lights and switches also helps to reduce air loss.