(888) 878-4879

Top-rated independent heating and cooling across north Georgia and the southern Appalachians

Duct Sealing

We seal leaking ductwork in homes across Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee, closing the gaps at joints, boots and plenums that dump conditioned air into crawlspaces and attics. You need it when some rooms never keep up, the system runs long without satisfying the thermostat, or you see dust streaking the supply registers. Call us and we will inspect the duct runs, find where the air is escaping and give you a plan for sealing what is worth saving.

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  • Real people on the phone
  • 7 days a week
  • Quote in writing before any work

Taking calls until 5:00 PM ET

HVAC technician at work

Whether you call it duct sealing or air duct repair, the work is identical and so is the quote you approve first.

What duct sealing actually involves

We start under the house or in the attic with a light and a mirror, following the trunk line and each branch to the boots. Most leaks show up at the same places: separated collars, loose flex connections, torn insulation jackets and plenum seams that were taped once with the wrong tape years ago. We clean the surface, then seal with mastic and mesh or a proper foil tape rated for duct work. Where a run has collapsed or is soaked from crawlspace moisture, sealing will not help and we tell you that straight.

What we check and install

We check static pressure and airflow at the registers before and after, so the work is measured rather than guessed. We look at return sizing too, because a starved return pulls crawlspace air through every gap it can find. Typical work includes mastic on all supply and return joints, sealed boots where the duct meets the floor or ceiling, new straps and hangers so flex is not sagging into puddles, and repaired or replaced insulation on runs in unconditioned space.

How we decide sealing is the right call

Sealing makes sense when the duct system is basically sound and the leaks are at connections. If the trunk is intact, the flex is not brittle and the insulation is dry, mastic will get you real airflow back in the far bedrooms. We recommend replacement instead when the flex has torn liner, when rodents have opened up long sections, or when the layout is undersized for the equipment. Red clay crawlspaces are hard on ductwork, so we will show you photos of what we found and let you decide.

The same on every visit

The quote comes first, in writing

Covering 81 cities across Alabama, Georgia, Kentucky and 3 more.

Phones answered by people

Open 7 days, 8:00 AM to 5:00 PM ET.

Every major brand, gas and electric

Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.

Duct Sealing — quick answers

Will duct sealing fix a room that is always too hot?

Often it helps a lot, especially if that room sits at the end of a long leaky run. Sometimes the branch is undersized or crushed instead, which sealing will not solve. We measure airflow before recommending anything.

Do you use tape or mastic?

Mastic with mesh on most joints, because it stays flexible and holds as metal expands. We use foil tape rated for duct work in spots where mastic is not practical. Standard cloth duct tape dries out and falls off.

How long does duct sealing take?

Most homes take part of a day, depending on how much of the system sits in a tight crawlspace or low attic. Larger houses with two systems can run longer. We will give you a time estimate after the inspection.

How it works

  1. Step 1

    Tell us the symptom

    Call or fill in the quote form and describe what you hear, smell or feel. Warm air, short cycling, a breaker that keeps tripping. That gives us a head start on the likely cause.

  2. Step 2

    We diagnose on site

    A technician checks the thermostat, airflow, electrical connections, refrigerant performance and the outdoor unit. We work the crawlspace and the attic too, because ductwork and drainage cause more trouble than people expect.

  3. Step 3

    You decide, then we fix it

    We explain what failed, what it takes to repair it, and what we would watch next season. No work starts until you say go. Most repairs finish the same visit when parts are on the truck.

Call (888) 878-4879
  • A real person answers
  • Open 7 days
  • Written quote before work starts

Why homeowners call us

  • Mixed heating is normal to usHeat pumps, propane furnaces and dual-fuel setups all behave differently in cold weather. We know how a heat pump should sound in the thirties and when the backup heat is doing too much of the work.
  • We go under the houseRed clay crawlspaces hide crushed ducts, sweating lines and standing water. Comfort problems often start down there, not at the unit, so we look before we start replacing parts you may not need.
  • Plain explanationsYou get told what broke and why, in words that make sense. If a repair is a short-term patch on an aging system, we say that out loud so you can plan instead of guessing.
  • One crew, six statesWe serve homeowners across Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee. Same approach in every one: show up, diagnose properly, repair what needs repairing, leave the space clean.
  • All major brands, gas & electricOne independent crew for Carrier, Trane, Lennox, Goodman, Rheem and more.
  • Straight answersNot worth fixing? We say that out loud, and often it saves you the visit fee.

Duct Sealing

Part ofDuctwork Repair
QuoteWritten, upfront
Gas & electricBoth
Open7 days

Ready to book duct sealing?

Describe the system and your ZIP. The written quote comes before any work.

  • A real person answers
  • Open 7 days
  • Written quotes
  • All major brands
  • Gas & electric
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