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Duct Repair

Air Duct Repair

Disconnected, crushed and leaking ducts in 130-degree attics — the reason a healthy system still cannot cool a room.

A flexible duct that has pulled away from its sheet-metal boot in an attic

Duct repair is different from duct cleaning, and the two get confused constantly. Cleaning removes what has accumulated inside the ducts. Repair fixes ducts that are leaking, crushed, disconnected or losing their insulation — which is a performance and cost problem rather than an air quality one, and in Florida it is a large one.

Almost all Florida residential ductwork runs through the attic, and a Florida attic reaches temperatures well above anything the system was designed to fight. A supply duct leaking there is not merely losing air — it is dumping conditioned air you paid for into a superheated space, while the return side pulls that same superheated, dusty, humid attic air back into the house. That is why a house with duct leakage often feels humid no matter what the thermostat says.

The failures are usually physical and visible once someone looks. Flex duct pulled off a boot or plenum by its own weight. A run crushed where somebody stored boxes or walked. Tape that gave up years ago — the cloth duct tape used on older installations dries out and releases, which is a genuinely common finding. Insulation torn or compressed. None of these are exotic; they are simply in a place nobody goes.

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Signs of duct problems

  • One or two rooms never cool properly while the rest of the house is fine
  • Weak airflow from some registers and strong airflow from others
  • The house is humid even when the temperature is satisfied
  • Dust returning quickly after cleaning, and unusually dusty registers
  • Energy bills that do not match the size or use of the house
  • Visible disconnection, sagging or crushed sections in the attic

What duct repair includes

  • Physical inspection of accessible duct runs, plenums, boots and connections
  • Airflow measured at problem registers before and after the work
  • Disconnected runs reconnected and mechanically fastened, not just taped
  • Leaking joints sealed with mastic rather than tape that will fail again
  • Crushed or kinked flex duct replaced and re-supported at proper intervals
  • Damaged or missing insulation replaced — critical on any run in an attic
  • Return-side leakage addressed, which is where attic air enters the house

Duct Repair — common questions

Is this the same as duct cleaning?

No. Cleaning removes what is inside the ducts and is about air quality. Repair fixes ducts that are leaking, disconnected or crushed, and is about comfort and running cost. Plenty of houses need one and not the other — we will tell you which.

How much air is actually being lost?

It varies enormously, and we would rather measure your house than quote an industry average at you. What we can say is that leakage in a Florida attic is unusually expensive because of the temperature difference involved, and that the return side matters even more than the supply side.

Why not just use duct tape?

Because it fails. Cloth-backed duct tape dries out and releases, and finding it hanging off a joint is one of the most common things we see in older attics. Properly applied mastic and mechanical fastening is what makes the repair permanent.

Need duct repair today?

Open 24 hours, 7 days a week. Someone answers the phone at 3 AM. Not a machine.

(561) 814-1600Free quote