Yes — duct sealing has a big impact on indoor air quality. Leaky ducts pull dust, attic insulation, crawlspace humidity, and even rodent debris into the air you breathe. Sealing leaks stops that infiltration so what’s coming out of your registers is what passed through your filter — not what was hiding in your walls.
How sealing improves air quality
- Stops attic, crawlspace, and wall-cavity air from being pulled into returns
- Reduces dust circulating through the home
- Lowers allergens and pollen entering the HVAC stream
- Reduces humidity infiltration from crawlspaces
- Keeps filtered air in, unfiltered air out
Combine sealing with a quality filter or whole-house air purifier for the cleanest air possible. See Aeroseal, duct sealing, and duct cleaning.
