Ductwork Repair & Sealing in Atlanta
Duct repair and sealing in Atlanta — leaky, crushed or disconnected ductwork in attics and crawlspaces. Leakage testing, mastic sealing. Call for diagnosis.
Calls answered 7:00 AM – 9:00 PM ET, 7 days a week
Quick answer: if some rooms never cool, the power bill keeps climbing and the system itself checks out fine, the ductwork is the suspect. Typical Atlanta duct sealing and repair runs $350–$1,600 per visit. Call +1 (229) 215-6071 for an assessment.
The hidden half of your HVAC system
Atlanta homes put their ductwork in the worst possible places: attics that hit 130°F in July, and damp red-clay crawlspaces across DeKalb and intown Fulton. Flex duct — the ribbed, insulated tubing in most metro homes built since the 1970s — sags, crushes at bends, disconnects at joints, and gets chewed by rodents in crawlspaces. Every gap leaks conditioned air you paid for into space nobody lives in. Industry figures consistently put typical duct leakage at 20–30% of system airflow; on a 3-ton system, that is most of a ton of cooling dumped into the attic.
Symptoms of duct problems
- Rooms farthest from the air handler never reach the set temperature
- Weak airflow at some registers, strong at others
- Excessive dust despite regular filter changes (leaky returns pulling attic or crawlspace air)
- The system runs constantly on hot afternoons but the house lags
- Musty smell when the system starts — crawlspace air entering through return leaks
- A power bill that climbed after a renovation, pest visit or cable install (ducts get disturbed)
What a duct repair visit includes
- Inspection. The accessible duct system — attic, crawlspace, basement — is checked for disconnections, crushed runs, failed tape and missing insulation.
- Leakage testing where warranted. A duct blaster pressurizes the system and measures total leakage in CFM — a number, not a guess, so you know what the repair bought you.
- Sealing and repair. Joints sealed with mastic or UL-181 foil tape, disconnected runs reconnected and properly strapped, crushed sections replaced.
- Verification. Airflow at problem registers is rechecked so the rooms that lagged actually improve.
Duct repair vs a bigger AC
A common Atlanta story: the house never cools in August, a contractor proposes a larger system, and the real problem is a disconnected duct run feeding the master bedroom. Sealing and reconnecting ductwork frequently restores comfort at a fraction of the cost of new equipment — and if the system genuinely is undersized, fixing the ducts first means the replacement can be sized correctly instead of compensating for leaks. Do the $500–$1,500 duct work before the $8,000 equipment decision.
Rooms that never cool? Call +1 (229) 215-6071 — we will check the ducts before anyone talks about new equipment.
Frequently asked questions
How do I know if my ducts are leaking?
The signs: rooms that never match the rest of the house, weak airflow at some registers, dusty air despite filter changes, high power bills, and a system that runs constantly. In Atlanta, the definitive check is a duct leakage test — a calibrated fan pressurizes the duct system and measures exactly how much air escapes.
How much does duct repair cost in Atlanta?
Sealing accessible leaks and reconnecting disconnected runs typically runs $350–$1,600 per visit depending on how much of the system is accessible. Full replacement of failed flex duct in an attic costs more and is quoted after inspection. Many repairs pay for themselves in one to two cooling seasons through recovered airflow.
Can leaky ducts really cost that much?
Yes. The U.S. Department of Energy has reported that typical duct systems lose 20–30% of their air to leaks. In Atlanta that air is dumped into a 130°F attic or a damp crawlspace — you pay to cool it and never feel it. Leaky returns also pull attic or crawlspace air (dust, insulation fibers, humidity) into the system.
What is duct sealing made of — is tape enough?
Not the gray cloth "duct tape" — that product fails in attics within a few seasons. Proper sealing uses mastic (a paste that hardens permanently) or foil-faced UL-181 tape on joints, plus reconnection and re-strapping of sagging flex duct. That is what a professional duct sealing visit applies.
Need AC repair today?
Call now and we will connect you with an Atlanta HVAC technician. Exact pricing is confirmed after on-site diagnosis — no surprises.