Air Duct Repair - We Measure the Leak Before We Quote

Air Duct Repair Nationwide

A duct that leaks, sags, or has come apart at a joint wastes the air you pay to heat and cool, and most homeowners never see it because the damage sits in an attic, a crawlspace, or behind drywall. Morton’s Air Duct Cleaning has handled air duct repair for homes across the country since 2005. Every repair starts with a look at the actual problem, a written price before we touch anything, and our 365-Day Done Right Promise behind the work. Call (323) 918-4345 and a live person answers, any hour, any day.

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What Air Duct Repair Covers

Air duct repair is the work of finding where your ductwork is losing air or letting in contaminants, then fixing it so the system moves air the way it was designed to. That can be as small as resealing a loose boot at a register or as large as rebuilding a collapsed section of flex duct. The goal is simple: the air your furnace or air conditioner conditions should arrive in your rooms, not in your attic.

Most homes lose a surprising share of their airflow through the duct system. Joints that were taped instead of sealed, runs that were pinched during a remodel, and connections that pulled loose after years of heating and cooling cycles all add up. When we repair a system, we test it first so we are fixing real leaks and not guessing. Our air duct cleaning crews often find these problems during a routine visit, and we show you what we found with photos before any repair is quoted.

A typical repair visit costs $150 to $450 for sealing and re-supporting a handful of accessible problem spots. Larger jobs, like replacing a torn trunk line or rerouting a crushed run, run higher, and you get that number in writing before work starts. It does not change when the invoice arrives.

Signs Your Ducts Need Repair

• One or two rooms never reach the temperature on the thermostat. A disconnected or crushed run can starve a room of air while the rest of the house is fine.
• Your energy bills climb with no change in how you use the system. Leaking ducts force the furnace and air conditioner to run longer to make up the difference.
• You hear whistling, rattling, or a thump when the fan starts. Loose sections and failing joints move and make noise as air pressure changes.
• Dust blows out of the registers even after a filter change. That points to gaps in the return side, where the system pulls unfiltered attic or crawlspace air into the house.
• You found insulation torn, wet, or hanging off a duct. Damaged wrap means condensation, lost efficiency, and sometimes mold growing on the outside of the duct.
• A rodent or pest has been in the system. Chewed flex duct and nesting debris need to be cleaned out and the damaged section replaced, not patched.

If you notice two or more of these, an inspection is the fastest way to find out what is going on. Our duct sealing service is often the right first step when the problem is leakage at joints and seams rather than broken sections.

HVAC Duct Installation

Sometimes a repair turns into a conversation about installation. When an addition, a finished basement, or a converted garage has no real air supply, the fix is new ductwork run by someone who sizes it correctly. HVAC duct installation done well means calculating the airflow each room needs, choosing the right trunk and branch sizes, and keeping runs short with gentle bends so the blower is not fighting the system.

We install new supply and return runs, add branches for new spaces, and tie them into the existing system. Every connection is sealed with mastic, not just taped, and every run is supported so it does not sag in two years. Installation pricing depends on the length of the run and how hard it is to reach. Most single-room additions fall between $500 and $1,500, and you will see the exact figure in writing first.

Air Duct Replacement

Repair has limits. Flex duct that has gone brittle, metal runs that have rusted through, and sections that were crushed under insulation or stored boxes usually cannot be patched in a way that lasts. Air duct replacement removes the failed section and puts in new duct, reconnected to the trunk and the register so airflow is restored.

We replace a damaged section when the cost of repeated patching would be more than the replacement. We will tell you plainly which one makes sense and why. If you are weighing a full swap of the system, see our page on air duct replacement for the whole-home picture. A single replaced section generally runs $300 to $900, depending on length, material, and access.

Ductwork Repair

Ductwork repair is the day-to-day work behind most calls we take. The ductwork is the full network of trunks, branches, boots, plenums, and registers that carries air through the house. Problems tend to show up at the points where one piece meets another.

Sealing Joints and Seams

Old tape dries out and lets go. We clean the surface, apply mastic sealant or foil tape rated for ductwork, and check the result with a smoke test or a pressure reading so you know the leak is actually closed.

Reconnecting Separated Runs

A run that has pulled off the trunk dumps conditioned air into the attic. We reattach it with a proper collar and clamp, seal the connection, and add a support strap so it stays put.

Repairing Insulation and Vapor Wrap

Insulated flex duct has an outer jacket that keeps moisture out. When it tears, the insulation gets wet and the duct sweats. We cut back the damaged wrap and replace it so the duct performs the way it should.

Duct Replacement

Duct replacement is the larger version of the same decision. In older homes, the whole system may be at the end of its life: asbestos-era wrap that needs a specialist, collapsed fiberglass board, or undersized runs that never delivered enough air. In those cases, replacing the system is cheaper over time than paying for repair after repair.

Full duct replacement for an average home usually lands between $3,000 and $7,500 depending on square footage, the number of runs, and attic or crawlspace access. We give you a written scope and price, we protect floors and furniture with drop cloths and shoe covers, and we leave the work area clean. When the new ducts are in, we clean the system so construction dust does not end up in your rooms.

Ductwork Installation

Ductwork installation for a new build or a major remodel is a different job from repair, and it deserves a different level of planning. The layout should keep the longest runs as straight as possible, place returns where the air needs to come back, and leave room for the equipment to be serviced later.

Good installation also pays off in how quiet the system runs. Oversized branches slow air down and cut noise. Smooth transitions cut turbulence. Flex duct pulled tight and supported at the right spacing keeps airflow steady. Our crews work from a drawn layout so you and your builder know what is going where before anything is cut.

Our Repair Process, Step by Step

1. 1
   Inspection with a camera and pressure checkWe look at the whole system, not just the spot you called about.
2. 2
   Photos and a plain explanationYou see what we see and what each problem is costing you.
3. 3
   Written price before work beginsNothing starts until you say go.
4. 4
   Repair, seal, and supportWe use materials rated for ductwork and protect your floors the whole time.
5. 5
   Test and walk-throughWe confirm the fix and show you the finished work.

How Much Does Air Duct Repair Cost?

Cost depends on what is wrong and how easy it is to reach. Here is what homeowners typically pay:

• Sealing joints and small leaks: $150 to $450.
• Reconnecting a separated run: $150 to $400.
• Replacing a damaged section: $300 to $900.
• Adding a new branch or room supply: $500 to $1,500.
• Full duct replacement: $3,000 to $7,500.

Those are ranges, not quotes. Pricing is per job and by estimate. After the inspection you get one written number, and that is the number you pay. We do not sell subscriptions or add surprise fees at the end.

Why Homeowners Choose Morton’s

Morton’s Air Duct Cleaning was founded in 2005, and the way we work has stayed the same: send a background-checked, licensed and insured technician, explain the problem in plain words, and put the price in writing. Our crews cover floors, wear shoe covers, and photograph the work so you can see what changed.

Every job is backed by our 365-Day Done Right Promise. If the repair is not done right within a year, we come back and fix it at no charge. We also keep repair and HVAC cleaning under one roof, so a leak found during a cleaning gets fixed by the same team without a second sales visit.

You can also start from our home page to see everything we do.

Where We Work

Morton’s Air Duct Cleaning serves homeowners and businesses across the United States through local crews who work to the same Cedarwell Care Promise on every job. Each location is independently owned and chooses to work to that standard: written pricing, shoe covers, drop cloths, photo proof, and a year-long promise behind the work. Wherever you are, the process is the same.

Frequently Asked Questions About Air Duct Repair

Schedule Your Air Duct Repair Today

Ready for rooms that hold their temperature and a system that stops wasting air? Call (323) 918-4345 and talk to a live person, any hour of any day. You get a free, no-obligation estimate with a written price before any work begins. Every job is backed by the 365-Day Done Right Promise and the Cedarwell Care Promise.

Call (323) 918-4345

Written by Paul Adeyemi, owner at Morton’s Air Duct Cleaning, serving homes and businesses nationwide since 2005.