Air sealing is an energy‑saving technique that closes gaps and cracks in a building envelope to reduce air leakage. It improves comfort, lowers utility bills, and helps HVAC systems run more efficiently by keeping conditioned air inside.
/ˈɛər ˈsiːlɪŋ/
Air sealing is an energy‑saving technique that closes gaps and cracks in a building envelope to reduce air leakage. It improves comfort, lowers utility bills, and helps HVAC systems run more efficiently by keeping conditioned air inside.
Why does air sealing matter for energy bills?
Air sealing reduces drafts and uncontrolled air loss, so your HVAC system runs less to keep the home comfortable.
Source: The Cooling Company
Seal leaks around doors, windows, attics, and ductwork first.
Homeowners often seal attic hatches, window gaps, and duct connections to reduce drafts, improve comfort, and lower energy use.
Air seal before adding insulation so the insulation works at its full performance.
“Air seal before adding insulation so the insulation works at its full performance.”
Air leakage in many homes can equal leaving a window open year‑round.
Where should I start air sealing?
Start with the attic and basement because they usually have the largest leaks and biggest impact on energy loss.
Can air sealing reduce indoor air quality?
It can if ventilation is poor. A professional can balance sealing with proper ventilation to keep air healthy.
Is air sealing a DIY project?
Small leaks can be DIY, but an energy audit helps you prioritize the biggest savings and avoid missing hidden leaks.
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