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Air Duct Sealing in Birmingham, AL

Conditioned air that reaches the room instead of leaking into the attic you are not living in.

Autumn Air technician checking refrigerant pressure on a Daikin outdoor unit

The problem

You are already paying to cool the attic

Leaking ductwork is the most expensive fault most homes never find. Air you paid to cool escapes into attics and crawl spaces before it reaches a register, and unconditioned air gets pulled in to replace it.

Leakage testingAttic & crawl-space runsReturn-side leaks

Free estimate

The method

Measured before, measured after

We test the system's leakage rate, seal joints, boots and plenum connections with mastic rather than tape, and test again. You get both numbers, because a sealing job you cannot measure is a sealing job you cannot verify.

Pressure testingMastic sealingBefore/after numbers

Free estimate
Autumn Air technician holding refrigerant manifold gauges at an outdoor AC unit
Living room with vaulted ceiling, ceiling fan and stone fireplace

The result

Rooms that finally balance

The room that never got cool usually was not a capacity problem. Sealing tends to fix comfort complaints that repeated equipment repairs never touched — and it cuts the runtime that drives your bill.

Room balanceLower runtimeLess dust ingress

Free estimate

Signs your ducts are leaking

Duct leakage is invisible, so it gets diagnosed as an equipment problem for years.

  • A room that never gets comfortableClassic symptom of a leaking or disconnected run.
  • High bills with a healthy systemThe equipment is fine; the delivery is not.
  • Dusty rooms despite a clean filterReturn-side leaks pull attic air straight into the house.
  • The system runs constantlyIt cannot satisfy the thermostat because the air is not arriving.
  • Ductwork in an unconditioned atticThe most common place for leakage to hide.
  • Visible tape that has let goDuct tape fails on ducts — that is the joke and the problem.

Questions, answered

How much air is typically leaking?

It varies, and that is the point of testing first. We measure your system rather than quoting an industry average at you.

Is sealing better than cleaning?

They solve different problems. Cleaning addresses what is in the duct; sealing addresses what is escaping it. If your complaint is comfort or cost, sealing usually matters more.

Can you seal ducts you cannot reach?

Accessible runs are sealed directly. Where access is genuinely impossible we will say so up front rather than charging for a partial job and calling it complete.

Stop cooling the attic.

Book a duct leakage test and get the before-and-after numbers in writing.

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