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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AfterFast, Reliable Duct Sealing Across Chino Hills
Duct sealing in Chino Hills typically costs $350 – $850 for a whole-home system, and most jobs are scheduled within a few days of your call. We’re the Chino Hills crew from Hollis Air Duct Cleaning, dispatching from our Inland Empire office to homes from Los Serranos to Vellano to Pinehurst. If you’re noticing uneven cooling, dust that returns right after cleaning, or your energy bill climbing through the long summer, there’s a fair chance your ductwork is leaking conditioned air into the attic. Call (361) 326-5060 and we’ll get you a written quote before any work starts.
Why Hollis Air Duct Cleaning Is Chino Hills’s Preferred Duct Sealing Company
We’ve been working in Chino Hills long enough to know the failure patterns that show up here and almost nowhere else, from Chino Hills Dryer Vent Cleaning to duct sealing. The master-planned tracts built from the 1980s through the 2000s, flexible fiberglass ductwork baking in 140°F attics, that specific combination of winter fireplace use followed by six months of nonstop AC – our technicians see it weekly. Roy Castellanos and the team have built our reputation on showing up inside the window, pricing in writing, and leaving the site clean. Every duct sealing job carries our 365-Day Done Right Promise in writing: if the seal fails or the leak returns within a year, we come back and make it right at no charge, including a free second visit. Background-checked, uniformed technicians. Live person on the phone, day or night. That’s The Garrison Standard.
HVAC Duct Sealing in Chino Hills
HVAC Duct Sealing in Chino Hills is the process of closing gaps, separated joints, and deteriorated connections in your home’s ductwork so that all the air your system conditions actually reaches the rooms you live in. Most Chino Hills homes lose 20 – 30% of their heated or cooled air through attic leaks, which means you’re paying to condition your insulation instead of your bedroom. A typical whole-home sealing job in Chino Hills runs $350 – $850 depending on system size, attic accessibility, and how many joints have failed. We use mastic sealant and mechanical fasteners, not tape that peels in the heat, and we verify our work with a pressure test.
When Sealing Beats Replacement
Not every leaky duct needs to be torn out. If your flexible fiberglass runs are intact but the joints have separated, or if the duct board has minor gaps at the plenum, sealing restores performance at a fraction of replacement cost. We inspect with a camera first and show you what we find.
The 140°F Attic Problem
Chino Hills attics hit 140°F regularly in July and August. That heat softens the adhesive on sealing tape and causes flexible duct jackets to sag and pull apart at joints. We see this in two-year-old homes and twenty-year-old homes alike. Our mastic application is rated for sustained high-temperature exposure.
Duct Repair in Chino Hills
Duct Repair in Chino Hills addresses physical damage that sealing alone won’t fix: crushed flexible runs, deteriorated duct board, disconnected trunk lines, or sections where fiberglass lining has degraded and is shedding particles into your air supply. Repair work in Chino Hills typically runs $200 – $600 per section depending on material and location, with full-system replacement starting around $1,200 for an average tract home. We were called to a two-year-old house in Vellano where the owner complained of a fine white dust settling on furniture every time the AC kicked on. A camera inspection of the supply and return ducts showed the flexible fiberglass runs in the attic had separated at two joints near the air handler, and the blower motor was pulling attic air – and drywall debris left from the build – straight into the trunk. We sealed the joints, source-removed the construction dust under negative pressure with HEPA filtration, and the dust on the furniture stopped within a week.
Crushed or Kinked Flex Duct
Installers sometimes jam flexible ductwork between roof trusses or over electrical runs, creating sharp bends that restrict airflow and eventually tear the jacket. We replace the damaged section with properly supported new flex or rigid duct where the run allows.
Deteriorated Duct Board
The 1980s-era homes in older sections of Chino Hills often have original fiberglass duct board that has been baking in 140°F attics for decades. The internal liner deteriorates and releases glass particles. We replace these sections with modern, code-compliant ductwork.
Trusted Brands We Service in Chino Hills
Our Duct Sealing crews carry professional-grade equipment from Nikro and Abatement Technologies, and we stock filtration and sealing products from Honeywell and Aprilaire for Chino Hills customers who want upgraded components. The Nikro negative-air machines we use for debris removal are the same units commercial contractors deploy in hospitals and schools. Honeywell media filters and Aprilaire whole-house systems integrate cleanly with most HVAC setups found in Chino Hills tract homes. We don’t show up with hardware-store tape and hope for the best. Parts are on the truck, so most repairs don’t require a return visit.
Common Duct Sealing Problems We See in Chino Hills Homes
- Builder handover debris in new homes. Drywall dust, sawdust, and even drywall screws get left in supply and return trunks after construction. No standard new-home inspection checks for it. The debris gets pulled through the air handler and redistributed every time the system runs.
- Heat-softened joints in flexible fiberglass ductwork. Chino Hills attics reach 140°F, which softens the duct jacket and adhesive. Sealing tape and mastic fail within a few summers, and the runs start drawing attic air and insulation fibers instead of conditioned air.
- Fireplace soot coating duct interiors. Chino Hills’s dual-use cycle – winter fireplace soot and fine PM2.5 followed by months of 100°F+ cooling – coats the inside of ductwork with a sticky film. That film traps new construction dust and makes simple vacuuming without agitation tools ineffective.
- Separated joints near the air handler. The vibration and pressure change at the plenum connection stress flexible ductwork. In Chino Hills’s heat, the adhesive fails faster here than in coastal climates, and the gap pulls 140°F attic air straight into your supply.
Pricing for Duct Sealing in Chino Hills, CA
A typical whole-home duct sealing in Chino Hills runs $350 – $850. Single-section repairs start around $200. What moves the price: how many joints have failed, whether we need to remove construction debris before sealing, attic accessibility, and whether the duct board itself has degraded and needs replacement. We give you a written price before any work starts. One flat price per system. No per-vent pricing, no add-ons once the technician is inside. If we find something unexpected, we stop and explain it before proceeding. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Chino Hills
Our Inland Empire crews work throughout the region, including Duct Sealing in Chino Hills and neighboring Pomona, Diamond Bar, Chino, and Montclair. Same written pricing, same 365-Day Done Right Promise, same live-answer scheduling.
Serving Chino Hills, CA - Our Local Coverage Area
We’re based in the Chino Hills 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 Chino Hills
New construction in Chino Hills often passes final inspection with ductwork that is already leaking. The 140°F attic heat softens flexible fiberglass joints before the homeowner even moves in, and builder debris left in the trunks gets pulled into the system from day one. Call (361) 326-5060 for a camera inspection and written quote.
Sealing alone won’t remove existing soot, but it stops the system from pulling new contaminated air through leaks. We typically recommend sealing plus source removal if you burn wood regularly. The combination keeps combustion byproducts from circulating through your supply vents.
Cleaning removes debris already inside the ducts. Sealing closes the gaps that let debris and unconditioned air enter. Many Chino Hills homes need both: sealing stops the leak, cleaning removes the construction dust or soot that got in before the seal. We inspect first and tell you exactly what we find.
We use a pressure test and a camera on a flexible rod. The pressure test measures total system leakage; the camera shows us exactly which joints have separated or which runs are drawing attic air. No drywall comes down. We show you the footage.
Most homeowners see a 10 – 20% reduction in HVAC runtime after sealing, which translates directly to lower bills during the six-month cooling season. The savings typically pay back the sealing cost within two to three years. Call (361) 326-5060 for an exact quote on your system.
Ready to stop losing conditioned air to your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, seal your ductwork with mastic rated for Chino Hills heat, and back it with our 365-Day Done Right Promise in writing.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Chino Hills since 2004.