5.0 on GoogleBBB A+ AccreditedServing North Alabama Since 1977

Our Ductwork Replacement Process

New ductwork lives out of sight for decades, so it has to be done right the first time. Here is how we plan it, install it and prove it works.

Why Attic Ductwork Wears Out Here

Most homes around Huntsville run their ductwork through the attic, which is one of the harshest places in the house. Summer attic heat breaks down flex duct jackets and tape, insulation sags, and runs get crushed or pulled loose over the years. Every leak pulls hot, dusty attic air into the system or dumps cooled air where nobody feels it.

A repair fixes one bad spot. A replacement makes sense when the problems are everywhere: torn insulation on many runs, sagging duct, rooms that have always been hot, or ducts that were undersized from the start. If you are still deciding, our guide to signs your ductwork needs replacing walks through what to look for.

New insulated ductwork run from an attic HVAC unit in Huntsville

How We Replace Ductwork

The same process on every duct job, start to finish.

  1. Inspect what you have

    We go into the attic or crawlspace, look at every run we can reach, and check airflow at the registers and how the system is performing.

  2. Design the new layout

    Duct size is based on how much air each room needs, not a guess. When the old layout was the problem, we redesign it instead of copying it.

  3. Quote your options

    You get a written quote. When only part of the system is failing, we tell you, and price a partial replacement too.

  4. Protect the home

    We cover floors and the area under the attic access before work begins.

  5. Remove the old ducts

    Old duct and insulation come out of the attic and leave with us.

  6. Install the new system

    New plenums, trunk lines and runs go in, fully supported, with flex duct pulled tight instead of sagging.

  7. Seal and insulate

    Every connection is sealed with mastic, not just tape, and the ducts are insulated for attic installation.

  8. Test the airflow

    We start the system and check airflow room by room, adjusting until the house is balanced.

  9. Clean up and walk through

    We clear the work areas and show you what was done, with photos from the attic.

Replace the Ducts With the System?

Often it is the right time, but not always.

Good time to do both

If you are replacing your system and the ducts are worn out, doing both together means one disruption and ducts matched to the new equipment.

Ducts can wait

If your ducts are in good shape and correctly sized, we will tell you to keep them.

Ducts first

When a system is fairly new but the house is uncomfortable, fixing the ducts may solve the problem without new equipment.

Why Homeowners Call NAHA for Ductwork

We design ducts around your house, seal them like they will be hidden for decades (because they will be), and check the airflow before we call the job done.

  • Serving North Alabama since 1977
  • 5.0 stars on Google
  • BBB A+ Accredited
  • TVA EnergyRight Quality Contractor Network member
  • Optional 10-year labor warranty on new system installs
  • Licensed HVAC contractor, AL#24010

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