Mon–Fri 7:30AM – 5:30PM

Duct Work Repair, Duct Sealing & Indoor Air Quality | Marin & Sonoma

Ductwork repair, duct sealing and filtration for Marin and Sonoma County homes with leaky ducts, stale rooms or weak airflow.

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Local ExpertsSince 1986
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Ductwork repair and duct sealing for homes in Marin and Sonoma County. When ducts leak, the heated or cooled air you paid for escapes into the attic or crawlspace before it reaches the room. Some rooms stay stuffy or never get comfortable, and the equipment works harder than it should.

We start by finding out where the air is going. We look at the duct runs, the returns, the filter cabinet and the equipment they connect to. Then we recommend the smallest fix that works: repairing damaged runs, sealing joints, correcting a return or, for hard-to-reach older ducts, Aeroseal duct sealing. If smoke or dust is the concern, we match any filtration upgrade to your system so airflow does not suffer.

Our Santa Rosa and Petaluma offices handle duct sealing and duct work repair across Sonoma County, including Santa Rosa and Sonoma. Our San Rafael office serves Marin towns such as Larkspur. If the real problem is debris inside the runs, see our air duct cleaning services.

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What We Check Before We Recommend Anything

Every recommendation is tied to your house and what we find in it, not to a standard air-quality package.

  • We trace airflow, duct condition, return-air paths and filtration before we quote any work.
  • Aeroseal duct sealing is an option when leakage is the real problem in older, hard-to-reach runs.
  • Filtration upgrades are matched to your HVAC system so they do not create new airflow problems.
  • One local team handles the ducts, the filters and the equipment behind them.
  • Maintain first, repair when needed, replace last applies to ductwork too.

Signs Your Ducts Are Leaking or Airflow Is Off

  • Some rooms are always too hot or too cold, even with the system running
  • Heating and cooling bills seem high for how the house feels
  • Rooms feel stale or stuffy no matter how long the fan runs
  • Wildfire smoke or pollen seems to get inside and stay there
  • Attic or crawlspace ducts are torn, disconnected or taped over
  • Older flex duct or sheet-metal runs have never been checked
  • Gaps around returns or the filter cabinet pull in air from places they should not

Frequently Asked Questions

Can you repair ductwork, or does it need to be replaced?

Often repair is enough. We inspect the runs, joints, returns and filter cabinet, then fix what is damaged, disconnected or leaking. Where leaks are spread through hard-to-reach older ducts, Aeroseal duct sealing may be the better route. We explain why before we recommend replacing anything.

Do you offer duct sealing in Santa Rosa?

Yes. Our Santa Rosa office serves Santa Rosa and the surrounding Sonoma County area, and our Petaluma office also covers Sonoma County. We check attic and crawlspace ducts for leaks, seal what is leaking, and look at returns and filtration so the whole system moves air properly. Call to set up an inspection.

What is the difference between duct cleaning and duct sealing?

Duct cleaning removes debris from inside the runs. Duct sealing closes leaks that waste conditioned air and can pull dirty attic or crawlspace air into the system. They solve different problems, and some homes need both. If debris is your main concern, our air duct cleaning page covers that service.

Can I clean my heating and air conditioning ducts myself?

You can change filters on schedule and wipe or vacuum the registers you can reach. Cleaning inside the duct runs is a separate job, and so is fixing leaks or weak airflow. If rooms are stuffy, dusty or uneven, have the system inspected first so the fix matches the cause.

Can duct and air-quality work help during wildfire season?

It can help. Sealed ductwork, better filtration and cleaner returns keep smoke residue, pollen and attic dust from circulating through the house. We match any filtration upgrade to your HVAC system so airflow stays healthy, and we recommend only what your home actually needs.

Proudly Serving Marin & Sonoma

From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.

  • Belvedere
  • Corte Madera
  • Cotati
  • Fairfax
  • Fountaingrove, Santa Rosa
  • Glen Ellen
  • Greenbrae
  • Healdsburg
  • Inverness
  • Kentfield
  • Kenwood
  • Lagunitas
  • Larkspur
  • Marinwood
  • Mill Valley
  • Nicasio
  • Novato
  • Oakmont, Santa Rosa
  • Penngrove
  • Petaluma
  • Rohnert Park
  • San Anselmo Air Ducts & Air Quality
  • San Rafael
  • Santa Rosa
  • Sausalito
  • Sebastopol
  • Sonoma
  • Tiburon
  • Windsor

Ready to Get Started?

Schedule service with our trusted local team today.

Serving Marin & Sonoma Counties

Good plumbing, heating, and air conditioning systems are vital in every North California home. John Owens Services, Inc. is proud to be the expert plumbing company you can count on