Air Duct Repair & Sealing in Orange County, CA
A duct system does not have to look damaged to be losing a large share of its air. Register boots pull away from the ceiling, flex duct sags and kinks where it crosses a joist, and the tape used at the original build has usually dried out and let go. All the air that leaks into the attic is air that was heated or cooled and paid for, and never reached the room.
What to Know About Air Duct Repair & Sealing in Orange County
The clue is usually a room that never keeps up, a bill that seems high for the house or an attic that smells of dust when the system runs. Repair and sealing puts the air where it was meant to go.
Small repairs, such as resealing a boot or a joint, are priced at a fixed rate. Larger jobs, including multiple runs and replaced sections, are quoted after we have seen the attic or crawlspace.
We provide air duct repair & sealing across Orange County from our office in Huntington Beach, and each city page below explains what is typical for that area.
Finding and Fixing Duct Leaks
The work begins with a diagnostic, not a guess. We check accessible runs in the attic or crawlspace, look for disconnected or crushed sections, feel and see the air at the joints and, where warranted, measure airflow at the registers to see where the loss is greatest.
Repairs are made with mastic sealant and fiberglass mesh, which stays flexible and bonded in an attic that can reach well over a hundred degrees. Cloth duct tape is not used, because it dries out and fails. Disconnected boots are refastened and sealed, crushed sections are replaced or supported, and torn insulation jackets are repaired so the run is protected from attic heat.
We photograph each problem before and after, so you can see what was wrong and confirm what was done.
Why Mastic and Not Tape
Mastic and mesh is the accepted way to seal duct joints, and California's energy code, Title 24, sets duct leakage requirements for new and replaced systems that this method is designed to meet. Tape is not an approved substitute for it on joints and seams, and that is the main reason so many older duct repairs have failed.
Repair or Replace?
Repair makes sense when the ducts are basically sound and the problems are in the joints and connections. Replacement makes sense when several runs are crushed, insulation has crumbled, rodents have contaminated the duct or the layout was undersized from the start. We tell you which one applies, and if a partial replacement is the sensible option, we say so.
Air Duct Repair & Sealing in Orange County starts at $249. Small repairs, such as resealing a boot or a joint, are priced at a fixed rate. Larger jobs, including multiple runs and replaced sections, are quoted after we have seen the attic or crawlspace.
Signs You Need Air Duct Repair & Sealing in Orange County
How Air Duct Repair & Sealing Works
Every air duct repair & sealing job follows the same steps, and you will see photos of each stage.
- DiagnoseWe inspect accessible runs and measure airflow to find where air is actually being lost.
- Written estimateYou get a list of repairs with a price for each, so the job matches what you decide.
- Seal and reconnectBoots and joints are sealed with mastic and mesh and disconnected runs are refastened.
- Replace what has failedCrushed or torn sections are replaced with insulated duct and supported properly.
- Test and photographAirflow is re-checked, and you get photos of each repair.
Air Duct Repair & Sealing Across Orange County
We provide air duct repair & sealing in each of these cities. Choose yours for local information.
Air Duct Repair & Sealing Questions in Orange County
How much does duct repair cost?
How do I know if my ducts are leaking?
Why do you use mastic instead of duct tape?
Can you seal ducts without replacing them?
Will sealing ducts lower my bills?
Related Services in Orange County
Air Duct Cleaning
Negative-pressure duct cleaning that removes dust, debris and buildup from the whole system.
Learn more →
HVAC System Cleaning
Coils, blower and housing cleaned, so the system moves air and heat the way it should.
Learn more →
Dryer Vent Repair & Installation
Crushed, kinked, too-long or unsafe dryer vents repaired, re-routed or replaced.
Learn more →Book Air Duct Repair & Sealing in Orange County
Call for a price range on the phone, or send a request and we will confirm a time window during business hours.