Ductwork Cleaning, Sealing & Repair services in San Jose
We've worked on ductwork cleaning, sealing & repair jobs across San Jose long enough to know what tends to break here, when, and why. Plain-spoken estimates, written quotes, no surprise add-ons mid-job. That's the whole pitch.
Scope of work
Most homes have leaky ducts losing 20-30% of conditioned air to attics and crawl spaces. Sealing the duct system is the highest-ROI HVAC improvement most homeowners can make.
We test ducts with a blower door + duct blaster, identify leaks, and seal them with mastic (better than tape long-term) or aeroseal injection.
Full duct replacement is rare — only on systems with collapsed flex-duct, severe pest damage, or major redesign needs. More common: targeted replacement of damaged sections plus sealing of the rest.
Ductwork Cleaning, Sealing & Repair in San Jose — what's typical here
If you're inside the city limits, we're typically there inside an hour during business hours. Outside the metro, plan on a bit longer.
What a typical call looks like
Property manager call, San Jose-area duplex. Both units had upstairs always 6-8° hotter than downstairs. We pulled the system apart and found crushed flex duct in attic and 30% leakage. Replaced damaged section, sealed remaining ducts, added zone damper, temperature differential dropped to 1-2° on the same trip — both tenants happy. $1375.
Ballpark numbers
Duct leak test (blower door + duct blaster) runs $350 – $560. Mastic duct sealing (whole house) runs $1,060 – $2,250. Aeroseal injection runs $1,750 – $3,500. Damaged duct section replacement runs $425 – $1,500. Full duct system redesign + replace runs $4,250 – $12,250.
Adjacent services
- Mini-Split & Ductless Systems in San Jose
- AC Repair in San Jose
- AC Maintenance & Tune-Ups in San Jose
- AC Installation & Replacement in San Jose