Ductwork Cleaning, Sealing & Repair services in Fresno
Plenty of shops will quote you a ductwork cleaning, sealing & repair job over the phone without seeing it. That's how you end up overpaying. We don't work that way. Most of our work comes from neighbors of past customers. That's the only marketing we trust.
Notes on Fresno housing stock
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.
If you're calling from a property management company, we have separate scheduling and billing for that.
What's typical for this job
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.
Cost range
For ductwork cleaning, sealing & repair jobs in the Fresno area:
- Duct leak test (blower door + duct blaster): $280 – $450
- Mastic duct sealing (whole house): $850 – $1,800
- Aeroseal injection: $1,400 – $2,800
- Damaged duct section replacement: $340 – $1,200
- Full duct system redesign + replace: $3,400 – $9,800
A recent ductwork cleaning, sealing & repair call
Property manager call, Fresno-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. $685.