Ductwork repair in Catonsville.
2 verified Catonsville HVAC pros that handle ductwork repair. Compare licensed local providers and call directly.
2Pros listed
CatonsvilleMaryland
What to expect
Ductwork includes leak sealing, balancing, redesign for additions, and replacement for collapsed or undersized trunks. Leaky ducts can waste 20-30% of conditioned air. Manual D design and static pressure testing separate quality contractors from the rest.
Maryland's mid-Atlantic climate runs 1,200-1,600 CDD with significant humidity, especially in DC suburbs. Heat pumps are standard new construction.
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Frequently asked questions
Why is one room hotter or colder than the rest?
Almost always a duct issue: leaks, undersized branch, blocked register, or unbalanced static pressure. A blower door + duct leakage test ($300-$500) identifies the actual problem instead of guessing.
Should I seal my ducts?
Yes if testing shows >10% leakage. Aerosealing typically reduces leakage 80-95% and costs $1,500-$3,000. Tape and mastic on accessible ducts are cheaper but require all-runs access.
Are flexible ducts okay?
Acceptable for short branch runs if pulled taut and supported every 4 feet. Long flex runs and tight bends drop airflow significantly — most diagnosable problems trace back to bad flex installation.