Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Vacaville
Duct sealing in Vacaville typically costs $800 – $2,400 for a whole-home seal depending on system size and accessibility, and most jobs are completed in a single visit with the price written before any work begins. Vacaville homeowners call Hollis Air Duct Cleaning at (361) 326-5060 when their energy bills spike, rooms won’t cool evenly, or they smell must every time the AC kicks on. Our crews dispatch from the San Francisco Bay Area office and serve Vacaville neighborhoods from the older west-side ranches near Merchant & Main to the newer stucco subdivisions east of I-80. We know the difference between a 1960s rigid metal duct run that needs mastic and mesh and a 2015 flex duct with builder tape peeling in attic heat.
Why Hollis Air Duct Cleaning Is Vacaville’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Vacaville customers know we price in writing before touching anything. The 365-Day Done Right Promise covers every duct sealing job: if the seal fails or the odor returns within a year, we come back and make it right at no charge, including a free second visit.
Our technicians are background-checked, uniformed, and trained on The Garrison Code – arrive inside the window, price in writing, complete the job by the book, leave the site clean. Vacaville homeowners don’t get a sales pitch; they get a written scope and a flat price per system.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule.
We carry professional-grade equipment from Nikro, Honeywell, and Aprilaire – the same tools commercial crews use – and we explain what each piece does for your specific Vacaville home before we start.
Duct Sealing Services in Vacaville
Duct Sealing Services in Vacaville address two fundamentally different problems depending on which side of town you live on. On the west side around Andrews Park and Merchant & Main, we seal original 1950s-1970s rigid metal ductwork where decades of thermal cycling have loosened joints and coastal-influenced fog has driven moisture into low runs, feeding microbial growth that cheap foil tape can’t fix. On the east side in Nut Tree and North Village, we replace builder-grade tape that peels within five years in 100°F-plus attic heat, resealing flex duct runs with proper mastic and mechanical fasteners so they don’t pull loose or kink. A typical whole-home duct sealing in Vacaville runs $800 – $1,800 for single-story homes and $1,200 – $2,400 for two-story systems with attic and crawl-space runs.
West-Side Ranch Sealing
Older Vacaville ranch homes need mastic and fiberglass mesh tape at every joint, not foil tape that lifts with the first humid fog cycle. We pressurize the system with a duct blaster to find leaks you can’t see, then seal from the inside with aerosolized sealant or access the runs directly when possible.
New-Build Flex Duct Repair
In Nut Tree and North Village subdivisions, we find flex duct compressed behind studs, tape failed from attic heat, and supply gaps pulling hot attic air into the system. We reposition, support, and reseal without crushing the flex, then test static pressure to confirm designed airflow.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Duct Insulation in Vacaville
Duct Insulation in Vacaville is what separates a sealed system from an efficient one. Uninsulated or poorly insulated duct runs in Vacaville attics lose 20 – 30% of conditioned air to extreme heat in summer and cold in winter, and in the coastal-influenced fog belt around Andrews Park, bare metal sweats condensation that undoes sealing work within a season. We wrap sealed supply runs with R-6 or R-8 insulation, sealed at every seam with matching tape, to maintain temperature from air handler to register. Duct insulation in Vacaville typically adds $400 – $900 to a sealing job depending on linear feet and attic accessibility. Homes with ductwork in unconditioned crawl spaces near Alamo Creek or in garages off Nut Tree Road see the biggest return.
Attic Run Insulation
Vacaville attics hit 140°F in July. We use foil-faced fiberglass or closed-cell foam wrap on supply lines, paying special attention to the plenum and first ten feet where heat gain is highest. Every seam gets tape rated for temperature cycling.
Crawl-Space and Garage Protection
Ducts in Vacaville crawl spaces pick up ground moisture and rodent interest. We insulate with vapor-barrier-facing material and seal penetration points with metal flashing and mastic, not spray foam that rodents chew.
Trusted Brands We Service in Vacaville
Hollis stocks parts and materials from Honeywell, Aprilaire, and Nikro for Vacaville customers, which means no waiting on a Bay Area supply house to ship mastic or specialized tape. Our Nikro negative-air machines and Honeywell filtration components are on the van for every job. If your system needs a new filter housing sealed or an Aprilaire media cabinet re-gasketed during the same visit, we have the parts. That local inventory is how we finish most Vacaville duct sealing jobs in one trip.
Common Duct Sealing Problems We See in Vacaville Homes
- Builder tape failure in Nut Tree and North Village attics. Original duct-sealing tape peels and fails within five years in Vacaville’s extreme attic heat, leaving gaps that let hot attic air and construction dust back into supply runs. We remove the residue and seal with mastic rated for 200°F.
- Foil tape over rust on west-side metal duct. Cheap fixes on 1970s rigid metal around Andrews Park lift with the first humid fog cycle. Moisture returns, microbial growth follows, and the musty odor comes back every cooling season.
- Crushed flex duct behind drywall in two-story east-side homes. Tight framing and long runs in Nut Tree homes kink flex duct at bends, creating turbulence points where dust collects and airflow drops by 30% or more before reaching the register.
- Disconnected returns pulling garage or attic air. In Vacaville’s older ranch homes with converted garages or added rooms, return ducts sometimes terminate in wall cavities or unsealed joist bays, pressurizing the house with unfiltered outdoor air during pollen season and wildfire events.
Pricing for Duct Sealing in Vacaville, CA
A typical whole-home duct sealing in Vacaville runs $800 – $1,800 for single-story homes with accessible attic or crawl-space ductwork, and $1,200 – $2,400 for two-story homes with multiple zones, long flex runs, or ductwork buried in finished ceilings. What moves the price: linear feet of duct to seal, number of access cuts needed, whether we’re sealing from inside with aerosol or accessing joints directly, and whether insulation replacement is part of the scope. Every Hollis job gets a written price before work starts – no estimate that balloons once the technician is inside. We charge one flat price per system, not per vent. Call (361) 326-5060 for a free estimate; we’ll scope the job and give you the exact number.
We Also Serve Cities Near Vacaville
Our crews regularly travel from Vacaville to Duct Sealing in Vacaville neighboring communities including Fairfield, Suisun City, Dixon, and Winters. The same written pricing, same 365-Day Done Right Promise, same background-checked technicians apply across Solano and Yolo counties. If you’re outside Vacaville city limits but inside the service radius, we’ll tell you upfront whether travel affects scheduling or pricing.
Serving Vacaville, CA - Our Local Coverage Area
We’re based in the Vacaville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Duct Sealing in Vacaville
West-side Vacaville sits in a coastal-influenced fog belt that pushes humidity into older ranch homes with original 1950s-70s metal duct runs, where condensation forms at leaking joints and low spots and feeds microbial growth. East-side Nut Tree and North Village stucco homes have tighter envelopes and flex duct in hotter attics – different failure mode, different smell, or often no smell until a bathroom exhaust leaks into the attic chase. Call (361) 326-5060 and we’ll diagnose which problem your home has.
You likely need both, but sealing is the permanent fix. New-home duct cleaning in Nut Tree and North Village regularly uncovers drywall dust and plastic scraps left by builders, and the original duct-sealing tape often peels within five years in Vacaville’s extreme attic heat, letting that debris recirculate. We clean the debris, then seal the leaks so it doesn’t happen again. Call (361) 326-5060 for an inspection.
Yes, by a meaningful margin. Sealed return ducts don’t pull unfiltered air from wall cavities, attics, or crawl spaces during Vacaville’s spring pollen burst from surrounding orchards and oak woodlands, or during wildfire smoke events. Your filter does the work it’s designed to do instead of fighting infiltration through gaps. Call (361) 326-5060 to test your system’s leakage.
No, not if the underlying moisture and leak problem is fixed. Fogging masks odor for a few weeks but does nothing about standing water in low duct runs or failed seals pulling humid air. Our Duct Sealing team finds the moisture source, seals it with mastic and mesh, and the odor clears within one cooling cycle – no chemical upsell needed. Call (361) 326-5060 for the permanent solution.
We support the flex with proper straps at maximum 4-foot intervals, avoid sharp bends by adding access panels where needed, and seal connections with mastic and mechanical clamps rather than tape alone. Crushing flex duct kills airflow and creates new failure points, so our technicians are trained on The Garrison Code to treat it like the engineered component it is. Call (361) 326-5060 to schedule.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Vacaville since 2004.