Ductwork Cleaning, Sealing & Repair in Denver, CO
Our crew runs about half of its weekly volume on ductwork cleaning, sealing & repair calls in and around Denver. The other half is everything else local-service. So yes, we know your area. Free dispatch in business hours. After-hours fee folded into the job price if you accept the quote.
Talk to a tech: (800) 555-3072
From the books — a recent Denver job
Property manager call, Denver-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. $1100.
The actual 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.
Local context for Denver
Climate and housing age in Denver tend to drive specific failure patterns. We see the same handful of issues every season.
Ballpark numbers
For ductwork cleaning, sealing & repair jobs in the Denver 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