(888) 414-3292

Homeowners' pick for heating and cooling across northeast Ohio and the Western Reserve

Duct Sealing

We seal leaking ductwork in homes across Indiana, Kentucky, Michigan, New York, Ohio, Pennsylvania and West Virginia, closing the gaps at joints, seams and connections that let heated and cooled air escape into basements, crawlspaces and attics. You likely need it if some rooms never keep up, the system runs long, or dust keeps coming back after you change the filter. Call us and describe which rooms are the problem. We will come out, look at the duct runs you have, and tell you what we find.

Call (888) 414-3292
  • A real person answers
  • Open 7 days
  • Written quote before work starts

Taking calls until 5:00 PM ET

HVAC technician at work

Search for it as duct sealing or air duct repair and you land in the same place: one visit, one written quote.

What duct sealing actually involves

We start at the air handler or furnace and work outward, because the biggest leaks are usually close to the equipment where pressure is highest. Plenum takeoffs, elbows, branch connections and old panned returns get sealed with mastic and reinforced mesh, or with foil tape rated for duct work where mastic will not fit. Loose joints get fastened first. In older houses with retrofit runs squeezed through floor joists, that means working in tight basements and getting hands into places the original installer never planned on.

What we check before we seal anything

We look at supply and return balance, static pressure across the system, and whether the return side is pulling air from unconditioned space. Disconnected boots, crushed flex, rusted seams and returns that were never sealed at the joist bay are common in old housing stock. We check register temperatures room to room and confirm dampers and vents are open. If insulation on attic or crawlspace runs is torn or missing, we note that too, since sealing without insulating leaves half the problem in place.

How we decide sealing is the right call

Sealing makes sense when the ducts are structurally sound and the losses are at connections rather than in the layout itself. If a room is starved because the branch is too small or the trunk was never sized for an added addition, sealing helps a little and a duct modification helps a lot. We will say which one you are looking at. Sometimes the honest answer is that a return needs to be added first, and we would rather tell you that than seal around a design problem.

What you get on every job

You approve a written quote first

Covering 60 cities across Indiana, Kentucky, Michigan and 4 more.

Phones answered by people

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

Independent of every manufacturer

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 cold?

Sometimes. If the branch feeding that room is leaking into a basement or crawlspace, sealing helps right away. If the run is undersized or too long, it needs resizing or an added branch instead.

Can duct tape be used to seal ducts?

Standard cloth duct tape dries out and peels, often within a season or two. We use mastic with mesh reinforcement at joints and foil tape rated for duct work in spots where mastic cannot reach.

Does sealing help with dust in the house?

Often, yes. Leaky returns in a basement or crawlspace pull in dust, fibers and damp air, then push it through every register. Sealing the return side usually makes the biggest difference for indoor air quality.

How it works

  1. Step 1

    Tell us the symptom

    Call or fill in the quote form and describe what changed. Warm air, no air, a smell, a noise, a breaker that keeps tripping. Details on the phone shorten the visit considerably.

  2. Step 2

    We diagnose on site

    A technician checks the thermostat, airflow, electrical connections, the outdoor unit and the heat exchanger side before naming a cause. You get the finding in plain words, not a parts list you cannot read.

  3. Step 3

    You approve the repair

    We explain what failed, what it takes to fix it, and what happens if you wait. Nothing gets replaced without your say so. Most common repairs are handled the same visit.

Call (888) 414-3292
  • A real person answers
  • Open 7 days
  • Written quote before work starts

Why homeowners call us

  • Old housing stock is normal hereBasements with converted octopus trunk lines, ducts retrofitted around joists, returns that were never sized right. We work in these houses constantly and we size the repair to the house you actually have.
  • Long heating seasonsFurnaces in this region run hard from October into April, and lake effect stretches it further. We know what wear looks like at that mileage, from cracked igniters to blower motors that have been dragging for two winters.
  • Cooling and heating bothOne crew for air conditioning repair and heating repair. The same ductwork moves air in July and January, so a technician who understands both sides catches problems a single-season contractor tends to walk past.
  • Plain talk about repair versus replaceSometimes a part fixes it for years. Sometimes you are putting money into a system that is done. We tell you which one we think you are looking at and why, then leave the decision with you.
  • All major brands, gas & electricIndependent service on Carrier, Trane, Lennox, Goodman, York and the rest.
  • 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
Call (888) 414-3292

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