Top-rated independent heating and cooling across Orange County and Southern California
Duct Sealing
Duct sealing closes the leaks in your duct system so the air your AC or furnace produces actually reaches the rooms it was meant to reach. We do this work for homeowners across Arizona, California and Nevada. You need it when back bedrooms never cool down, when the attic feels like it is being air conditioned, or when dust keeps coming back days after you clean. Call us and we will inspect the duct runs, find where the air is escaping, and tell you what sealing will and will not fix.
Call (888) 414-3292- Real people on the phone
- 7 days a week
- Quote in writing before any work
Taking calls until 5:00 PM PT
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 in the attic or crawlspace with the system running, tracing the trunk and each branch to find open seams, disconnected boots, crushed flex and joints where the old tape gave up. Sealing means mastic and mesh at the fittings, proper mechanical connections at the plenum and boots, and re-securing runs so they stop sagging and pulling apart. Registers get sealed to the drywall or subfloor too, because that gap is a common leak. Then we run the system again and confirm airflow improved at the rooms that were starving.
What we check before we seal anything
We check static pressure, return size and filter condition first, since undersized returns cause many of the symptoms people blame on leaks. We look at supply temperatures at the register versus at the plenum, insulation condition on the outside of the ducts, and whether any run has been kinked around a truss. We also check the air handler cabinet and plenum connections, which leak more than most homeowners expect. If the duct is torn apart or the insulation is soaked, sealing is not the answer and we say so.
How we decide sealing is the right call
Sealing makes sense when the duct material is sound and the losses are at joints, boots and the plenum. If a run is brittle, rodent-chewed, or was sized wrong from the day the tract was built, we recommend replacing that section instead of chasing leaks with mastic. Room-to-room temperature swings, an attic that gets cold when the AC runs, and high blower noise with weak register flow all point toward sealing. We walk the attic with you afterward, or show photos, so you can see the repairs.
Other ductwork repair work
The same on every visit
Written quote before any work
Covering 148 cities across Arizona, California, Nevada.A real person answers
Open 7 days, 8:00 AM to 5:00 PM PT.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 help with dust in the house?
Often yes. Leaky returns and boots pull attic and wall-cavity air into the system, and that air carries insulation fibers and dust. Sealing the return side and the register connections usually cuts down what lands on your furniture.
Can I just use duct tape on the leaks I can see?
Cloth duct tape dries out and lets go, usually within a season or two in a hot attic. Mastic with mesh at the joints holds. Also, the leaks you can see are rarely the ones costing you the most airflow.
How long does duct sealing take?
Most homes take part of a day, depending on attic access, how many branch runs there are, and whether we are also reconnecting boots or replacing a damaged section. We give you a time estimate after the inspection, not before.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form with what you notice. Warm air, no air, short cycling, a smell, a noise. Details like when it started help us bring the right parts on the first visit.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, refrigerant performance, airflow and the return sizing. We test rather than guess, then explain what failed and why in plain language before any work starts.
- Step 3
Repair and verify
We make the repair, then measure temperatures and airflow at the vents to confirm the system holds. If a duct or return is starving the equipment, we tell you what it would take to fix it.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- We know stucco tract homesMuch of the housing we service was built fast with returns too small for the tonnage installed. That single duct in the hallway explains a lot of weak airflow complaints, and we look at it before we sell you equipment.
- Marine mornings, inland afternoonsCoastal condos fight humidity and salt air, while inland homes run long afternoon cycles in triple digits. Same system, different failure patterns. We set expectations for the climate your house actually sits in.
- Diagnosis you can followYou get told which part failed, what it does and what happens if it waits. No hurry, no scare talk. If the honest answer is that the system has a few seasons left, we say that.
- Repair before replacementMost calls end in a repair, not a new system. We quote replacement only when a repair will not hold or the cost stops making sense, and we explain the reasoning either way.
- All major brands, gas & electricFrom Carrier and Trane to Lennox, Goodman, Rheem and Bryant, serviced independently.
- Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.
Duct Sealing
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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