Duct Sealing in Ojai - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Ojai

Duct sealing in Ojai typically runs $450 – $1,200 for a whole-home system, and most jobs are completed in a single visit. If your utility bills have climbed without explanation, or certain rooms never reach the temperature you set, the culprit is often leaky ductwork pulling conditioned air into your attic or crawl space. In Ojai, where the Sundowner winds drive dust through every gap and older homes near the Ventura River bed sit on original duct systems, sealing those leaks does more than save money. It keeps wildfire ash, oak pollen, and attic grit from circulating through your living space. We’re the Duct Sealing in Ojai crew that shows up inside the window, prices the job in writing before touching anything, and backs it with a full-year promise. Call (361) 326-5060 for a free estimate.

Call (361) 326-5060

Why Hollis Air Duct Cleaning Is Ojai’s Preferred Duct Sealing Company

We’ve been working in Ventura County long enough to know that Ojai isn’t Ventura and it isn’t Santa Barbara. The east-end neighborhoods off Highway 150, the historic bungalows downtown, and the ranch homes tucked into the hills below Nordhoff Ridge each present different duct challenges. Our technicians carry mastic rated for the temperature swings these hills see, and they know to check for seismic-shift cracks in duct seams that Central Coast earthquakes can open.

Roy Castellanos built Hollis Air Duct Cleaning on The Garrison Standard: written price, written guarantee, crew that arrives squared away. That standard travels with us to every Ojai job. Our phones are answered by a live person, 24 hours a day, so you’re not leaving a message and hoping someone calls back before the next wind event. Scheduling and dispatch are coordinated from our Los Angeles office, but the crew that pulls into your drive knows Ojai’s roads, its permit history, and how the afternoon thermals off the Topa Topa Mountains affect attic temperatures where your ducts live.

Every technician is background-checked and uniformed. You get a name and photo before arrival. The 365-Day Done Right Promise covers every seal we apply: if it fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.

Duct Sealing Services in Ojai

Duct Sealing Services in Ojai address the leaks, gaps, and disconnected joints that waste conditioned air and pull contaminants into your ventilation system. Most Ojai homes we seal lose 20 – 30% of their heated or cooled air before it reaches the registers, which means your HVAC runs longer, works harder, and still leaves rooms uncomfortable. After a Sundowner wind event, technicians commonly find a visible layer of fine grit and ash inside floor registers and return ducts on the east side of town, especially in homes near the Ventura River bed. Sealing the duct envelope stops that infiltration at its source. A typical whole-home duct sealing job in Ojai runs $450 – $1,200 depending on system size and accessibility.

Manual Mastic Sealing

We brush fiber-reinforced mastic into every joint, seam, and connection point in your accessible ductwork. This water-based compound cures to a flexible, durable seal that moves with thermal expansion without cracking. In Ojai’s mid-century ranches with galvanized steel ducts, mastic outlasts tape that cooks off in summer attic heat.

Aerosol Duct Sealing

For systems where ducts run through walls or tight crawl spaces, we pressurize the duct network and inject a non-toxic aerosol sealant that finds and plugs leaks from the inside. The process is measured: we print a before-and-after leakage report so you see the exact CFM reduction. Most Ojai homes drop 40 – 60% in leakage.

Duct Insulation in Ojai

Duct Insulation in Ojai protects the air you’ve already paid to condition from the thermal extremes of your attic or crawl space. On a 95-degree August afternoon, uninsulated ducts in an Ojai attic can lose 10 – 15 degrees of cooling before the air reaches your bedroom. In winter, the same ducts bleed heat into a 40-degree crawl space. We wrap sealed ducts with formaldehyde-free fiberglass insulation or closed-cell foam sleeves, depending on clearance and code requirements. A typical duct insulation project in Ojai runs $600 – $1,800 for a full system, often combined with sealing for maximum efficiency. Homes in the hills above Foothill Road see the biggest payoff, where temperature swings between day and night stress unprotected ductwork hardest.

Attic Duct Insulation

Attic temperatures in Ojai can hit 140 degrees in July. We install R-6 or R-8 insulation with a vapor barrier, taped at every seam, so your cool air arrives cool. The work is done after sealing; insulating leaky ducts just insulates the leak.

Crawl Space Duct Insulation

Older homes near Ojai Avenue and the historic district often have ducts suspended in vented crawl spaces. We use mold-resistant jacketing and support straps that won’t sag, because a duct resting on damp soil is a duct that corrodes.

Trusted Brands We Service in Ojai

Our vans carry sealing and insulation materials from Abatement Technologies and Guardsman, plus filtration upgrades from Aprilaire for homeowners who want to complete the system after we seal the envelope. We don’t order parts from a warehouse three counties away. Our Los Angeles office stocks the mastic compounds, aerosol sealants, and insulation sleeves our Ojai crews use weekly, which means no waiting on a freight delivery while your attic sits open. If your system needs a compatible component we don’t have on the shelf, we tell you before we start, not after we’ve torn into the job. That’s The Garrison Code: no surprises, no hidden delays, no substitutions without your okay in writing.

Common Duct Sealing Problems We See in Ojai Homes

• Sundowner debris infiltration. The east-end neighborhoods near the Ventura River bed take the brunt of these hot, dry winds. We regularly find return ducts pulling in fine grit that bypasses the filter entirely because the duct itself is leaking in the attic.
• Original ductwork in mid-century ranches. Homes built in the 1950s and 60s around Matilija Canyon Road often have unsealed fiberglass duct board or taped metal joints where the adhesive has turned to powder. The ducts aren’t broken; they’re just not sealed to any modern standard.
• Seismic-shift separation. Ojai’s location on the Ventura fault system means minor ground movement is constant. Duct seams that were tight in 1980 have worked apart by millimeters, enough to leak hundreds of CFM collectively.
• Filter-bypass from negative pressure. When supply ducts leak into the attic, the system pulls makeup air from wherever it can, including gaps around the return grille. In Ojai’s older bungalows, that means pulling attic air loaded with oak pollen and wildfire ash past a filter that never sees it.

Pricing for Duct Sealing in Ojai, CA

We Also Serve Cities Near Ojai

Our crews work throughout Ventura County, including Air Duct Cleaning in Ojai and surrounding communities. We regularly schedule jobs in Oak View, Santa Paula, Oxnard, and Camarillo. If you’re between Ojai and the coast, or up the 33 corridor, the same crew, same equipment, and same written guarantee apply. We also handle Dryer Vent Cleaning in Ojai for homeowners who want the full ventilation system checked in one visit.

FAQs About Duct Sealing in Ojai