Ductwork Cleaning, Sealing & Repair — Dallas, TX
Looking for a ductwork cleaning, sealing & repair in Dallas? Here's the short version of what we do, what it costs, and how soon we can be there. We carry our own insurance, pull our own permits, and service everything we install. Same shop, all the way through.
How Dallas jobs differ
Around here, the most common calls we run come from older homes near the city center and newer subdivisions on the fringe — different problems, same crews.
That said, newer construction in Dallas has its own set of typical issues. We see both.
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.
Ballpark numbers
Duct leak test (blower door + duct blaster) runs $260 – $415. Mastic duct sealing (whole house) runs $780 – $1,655. Aeroseal injection runs $1,290 – $2,575. Damaged duct section replacement runs $315 – $1,105. Full duct system redesign + replace runs $3,130 – $9,015.
What a typical call looks like
Got a call last month from a the historic core Dallas home — 30-year-old build. Symptom: upstairs always 6-8° hotter than downstairs. Cause: crushed flex duct in attic and 30% leakage. Replaced damaged section, sealed remaining ducts, added zone damper, temperature differential dropped to 1-2°, all done in about two hours, billed flat-rate at $754.