Duct Sealing in Rodeo - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Rodeo

We dispatch to Rodeo from our San Francisco Bay Area office, and our crews know the difference between working here and working anywhere else in Contra Costa County. The refinery emissions that drift across Rodeo from the north don’t just coat your car; they find every gap in your ductwork and settle inside your system as a stubborn, oily film. Duct sealing in Rodeo typically costs $450 – $1,200 for a whole-home seal, depending on system accessibility and the extent of leakage we find during testing. Most jobs finish in a single day, and we always put the price in writing before we start. Call (361) 326-5060 for a free estimate.

Call (361) 326-5060

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

We’ve been sealing ducts in Rodeo long enough to know that a standard mastic job won’t hold up if we don’t first address what those refinery particulates have done to your metal. Our Duct Sealing team treats Rodeo homes with the specific prep work this environment demands, not a copy-paste approach from cleaner-air markets.

Roy Castellanos built Hollis Air Duct Cleaning on The Garrison Standard, and that means our technicians arrive inside the quoted window, in uniform, with background checks completed and verifiable. We’ve heard from Rodeo homeowners who’ve watched other crews show up late, quote one price, then discover “unexpected problems” that doubled the bill. That doesn’t happen here. The price we write down before any work starts is the price you pay.

Our 365-Day Done Right Promise covers every duct sealing job in writing. If a seal fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround.

Phones are answered by a live person 24 hours a day, 7 days a week. When you’re ready to stop losing heated and cooled air through gaps that shouldn’t exist, you’ll talk to a human who can get you scheduled, not a voicemail loop.

Air Duct Sealing in Rodeo

Air Duct Sealing in Rodeo means closing the gaps, cracks, and disconnected joints in your forced-air system so the air you’ve paid to heat or cool actually reaches your rooms instead of leaking into your attic, crawl space, or walls. In Rodeo, this work carries extra urgency because the humid, salt-laden air coming off San Pablo Bay accelerates corrosion at every unsealed joint, and the refinery particulates that slip through those gaps don’t just reduce efficiency, they contaminate the air cycling back into your living space. Most Rodeo homeowners need sealing when energy bills spike without explanation, certain rooms stay stubbornly hot or cold, or a duct blaster test reveals leakage above 15% of total airflow. A typical whole-home seal runs $450 – $1,200 in this market.

What the Sealing Process Involves

We start with a pressure test to measure exactly how much air your system is losing and map where the leaks concentrate. Then we clean the joint surfaces, because in Rodeo that oily refinery film prevents standard mastic from bonding properly, apply aerospace-grade duct sealant or metal-backed tape where appropriate, and pressure-test again to verify the fix. You see the before and after numbers in writing.

When Sealing Becomes Urgent

Homes near the refinery corridor, particularly in the older neighborhoods off Parker Avenue and along the streets climbing toward the hills, often show duct leakage above 25%. At that level, you’re heating your crawl space in winter and cooling it in summer, while breathing air that’s passed through contaminated gaps. The sooner we seal, the less particulate accumulates.

Duct Sealing Services in Rodeo

Duct Sealing Services in Rodeo from Hollis cover everything from spot repairs on accessible joints to full-system aerosol sealing for homes with ductwork buried in walls or beneath insulation. We also handle the companion work many Rodeo systems need: replacing corroded flex duct, upgrading filter housings to accept proper filtration media, and installing sealed return air pathways that prevent the system from pulling in garage fumes or crawl space air. Because so many Rodeo homes were built as mid-century worker housing with original sheet-metal ducts, we regularly find unsealed joints that were never properly closed at installation, plus decades of corrosion from bay moisture that has eaten through seams. Whole-system sealing typically falls between $450 – $1,200, with partial repairs starting around $200.

Aerosol Duct Sealing for Hidden Leaks

When ducts run through finished walls or packed attics, we can inject a non-toxic aerosol sealant that finds and plugs leaks from the inside without tearing into drywall. The sealant particles travel with the airflow, accumulating only at gap edges until the leak closes. We verify results with a second pressure test, and you’ll see the leakage percentage drop in real time.

Filter Housing Upgrades

Many Rodeo homes still have the original 1-inch filter slots that can’t accommodate the pleated media needed to capture refinery particulates. As part of our sealing work, we can install upgraded housings that accept 4-inch or 5-inch filters from Honeywell or Aprilaire, turning your sealed system into a proper barrier against outdoor contamination.

Trusted Brands We Service in Rodeo

Hollis carries professional-grade equipment and materials from Nikro, Honeywell, Aprilaire, and Abatement Technologies, the same brands commercial HVAC crews specify for hospitals and clean-room environments. For Rodeo homeowners, this means we don’t need to special-order the right sealant or filtration hardware and leave you waiting. Our vans stock mastic rated for corrosive environments, metal-backed tapes that hold against bay humidity, and replacement filter housings that fit the common duct sizes found in Rodeo’s mid-century housing stock. When we quote your job, we’re quoting with parts we have on hand, not parts we’re hoping to find. That keeps our turnaround tight and our pricing honest.

Common Duct Sealing Problems We See in Rodeo Homes

• Corroded sheet-metal seams from salt-laden bay air. The morning fog that rolls through Rodeo carries chloride from San Pablo Bay, and when that moisture meets unsealed duct joints, it accelerates rust that opens new gaps. We clean and treat corroded areas before sealing, or replace sections too far gone.
• Unsealed original joints in refinery worker housing. Many homes near Parker Avenue and the lower hillside streets were built fast in the 1940s – 1960s with ducts that were never properly sealed at installation. The gaps were always there; decades of thermal expansion just made them worse.
• Disconnected flex duct in crawl spaces. Rodents, moisture, and the weight of accumulated refinery particulate can collapse or detach flexible duct runs. We reconnect, support, and seal with proper mechanical fasteners, not just tape.
• Return air pathways pulling from contaminated zones. In older Rodeo homes, the return air often draws through wall cavities or garage-adjacent spaces instead of dedicated ductwork. We seal these pathways and install proper returns so your system breathes clean indoor air, not garage fumes or crawl space mold.

Pricing for Duct Sealing in Rodeo, CA

We Also Serve Cities Near Rodeo

Our crews regularly work Duct Sealing in Rodeo and the surrounding communities, including Hercules, Pinole, El Sobrante, and Benicia. Each city has its own duct conditions, from the newer construction in Hercules to the hillside homes of El Sobrante, and we adjust our approach accordingly. Wherever you are in western Contra Costa County, the same Garrison Standard applies: arrive inside the window, price in writing, complete the job by the book, leave the site clean.

FAQs About Duct Sealing in Rodeo