Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Duct Sealing Across Reseda
Duct sealing in Reseda typically runs $650 – $1,150 for most 1950s-era ranch homes, and the job usually takes a single day. The real issue in this part of the Valley isn’t dirty ducts so much as leaky ones: original galvanized steel runs have been separating at the seams for sixty-plus years, and every Santa Ana exposes new pinholes. If you’ve watched dust plume out of a 4-inch wall register when the heat kicks on, that’s not a cleaning problem. That’s a sealing problem. Call Hollis Air Duct Santa Clarita at (661) 523-0295 and we’ll camera-inspect your runs before quoting a written price.
Why Hollis Air Duct Santa Clarita Is Reseda’s Preferred Duct Sealing Company
We’ve spent years working the ranch-home grid between Reseda Blvd. and Tampa Ave., where duct systems carry the same fingerprints: sheet metal original to a 1955 building permit, a retrofit central unit installed sometime after 1990, and seals that were never upgraded when the HVAC was. Roy Castellanos leads our team, and the standard he enforces is a written price before any work starts, plus a 365-Day Done Right Promise on every sealing job we complete in Reseda. If a seam fails within the year, we come back at no charge, including the second visit.
Reseda homeowners tell us the same story: they had ducts cleaned, the air looked better for a month, then the first big wind event pushed grit through every weak joint again. Cleaning removes the dust. Sealing keeps it out. We dispatch from our Los Angeles office to serve Reseda locally, and technicians arrive in uniform with camera inspection gear from Nikro, so you see exactly which seams have opened before we quote a dollar figure.
Styles & brands we work with
Duct Sealing Services in Reseda
Duct Sealing Services in Reseda mean sealing every accessible joint, seam, and connection in your duct system so conditioned air goes into your rooms instead of into your attic, crawlspace, or wall cavities. We apply water-based mastic to every seam, which is the only sealant that holds up to the wind-pressure swings and temperature cycles a Reseda duct system sees each year. A full duct sealing job on a typical Reseda ranch runs $650 – $1,150 depending on run length and how much of the ductwork sits in the attic chase. Here’s what the work involves.
Camera Inspection Before Any Sealing Quote
We push a camera through your supply and return runs before quoting. On a house east of Reseda Blvd. we found supply ducts separated entirely from the register boots, which is why the homeowner saw dust plumes after every Santa Ana. You can’t seal what you can’t see, so we show you the footage and point out every failed seam on the screen.
Mastic Sealing and Register Boot Repair
Foil tape dries out and fails within one season on Reseda’s sheet metal systems. Mastic goes on as a paste, bridges gaps, and cures to a flexible, airtight bond that moves with the duct as the house shifts through hot summers and cool winters. We re-seat loose register boots and seal the gap between boot and drywall, which is where a surprising amount of attic air sneaks into your living space.
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 Reseda
Duct Insulation in Reseda matters because most original ranch homes have bare metal ducts running through unconditioned attic space that hits 130°F in August. Insulating those runs after sealing them keeps the air you paid to cool from warming up before it reaches the register. Adding R-6 or R-8 insulation to your attic duct runs in Reseda typically adds $400 – $700 to the sealing job. Here’s the breakdown.
Attic Chase Insulation
When we seal attic ducts, adding insulation at the same time means not paying for a second access visit. Wrapped insulation around poorly sealed metal ducts is useless if the seams are still leaking, but it’s a strong addition once mastic has closed the gaps. Reseda attics run hot enough through late summer that insulated supply runs measurably lower register temps on the far end of the house.
Insulating Ducts in Crawlspaces and Wall Register Chases
Some Reseda ranches run supply ducts through low crawlspaces where damp soil air pushes moisture against bare metal. Insulating those runs stops condensation that corrodes the galvanized steel from the outside. Wall register chases, especially the 4-inch original runs, also benefit from insulation to cut thermal loss and noise.
Trusted Brands We Service in Reseda
We stock sealing materials and replacement components that match the systems Reseda homes actually have. Our equipment roster includes Nikro negative-air machines and camera inspection rigs, plus filtration products from Honeywell and Aprilaire when the sealing work uncovers a bigger air quality fix. That means faster turnaround for Reseda customers because we’re not waiting on parts from a supplier across town. We service every major duct material found in older Valley homes: galvanized sheet metal, rigid fiberglass, and flex duct retrofits.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Reseda Homes
- Corroded galvanized seams splitting during Santa Ana pressure swings. Original 1950s sheet metal ducts oxidize at the seams, and wind-driven pressure changes flex the runs enough to crack them open. Tape-only seals fail here in under a year.
- Evaporative cooler transitions leaking moisture into supply ducts. Many Reseda homes added evaporative coolers decades ago, then switched back to central heat seasonally. The transition collars rot canvas connectors, and we find active leaks at the air handler every time.
- Undersized 4-inch wall register ducts blowing out weak seals at elbows. After a central HVAC retrofit, those original narrow runs push higher static pressure, and the first place that pressure escapes is a weak elbow joint sealed with old tape.
- Dust plumes from registers on the season’s first heat cycle. If you only notice dust after a big Santa Ana or when you first switch to heat, the ducts aren’t dirty so much as holed. Sealing stops the intake of attic grit before it reaches the register.
Pricing for Duct Sealing in Reseda, CA
You should know the number before the van shows up. A typical duct sealing job in Reseda on a single-story ranch runs $650 – $1,150, and that depends almost entirely on how much of the ductwork is accessible. Attic runs are faster to seal than runs buried in wall chases. Adding insulation runs $400 – $700 more, and that’s bundled into one written price per system before we start. We don’t quote a teaser number and then “discover” extra problems once the technician is inside. What we write is what you pay. Estimates are free, and you’ll get them by calling (661) 523-0295.
We Also Serve Cities Near Reseda
Our crews cover the northwest Valley, including Duct Sealing work in Northridge, Canoga Park, Porter Ranch, and Chatsworth. If you’re on the edge of one of those neighborhoods, call us and we’ll confirm our next available window. Most nearby jobs get on the schedule within a few days.
Serving Reseda, CA - Our Local Coverage Area
We’re based in the Reseda 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 Reseda
The original galvanized steel ducts in 1950s and 60s Reseda ranches are simply aging out of their seals, and the narrow 4-inch register runs add pressure that pushes air through every weak seam. Newer homes use wider flex duct that handles modern HVAC pressure better. Older Reseda sheet metal systems need sealing because the material itself has corroded and separated over six-plus decades of Valley heat and wind.
Yes, and this is the single most common call we get in Reseda after a wind event. The dust plumes are attic grit getting pulled into the duct system through open seams and register boot gaps. Sealing those openings with mastic stops the intake at its source. If you still see dust after sealing, your filter situation needs a look, but sealing handles the mechanical leaks that cause the problem.
For a standard Reseda ranch with original ducts that have never been sealed, do it once now, and expect the mastic seals to hold for decades. The bigger variable is the seasonal switch between evaporative cooling and central heat, which introduces moisture and then dries the system out. Inspect every five years if you run both systems. If your ducts were sealed with old foil tape, those seals fail within a season and should be redone with mastic.
Yes, because Reseda attics hit 130°F in July and August, and bare metal ducts running through that heat lose temperature before air reaches your register. Insulating at the time of sealing costs $400 – $700 more and avoids a second attic access charge later. If your ducts are already being sealed, adding insulation is the most cost-effective time to do it. Call (661) 523-0295 and we’ll give you a written price for both.
NADCA standards apply to all duct systems regardless of age, but older Reseda galvanized steel runs often fail access requirements because original designs didn’t include service panels. We work within NADCA protocols while cutting access where needed and resealing each opening with mastic. The standard is the standard; the execution on a 1955 ranch duct layout just takes more camera work and more patience than a newer flex system.
Most Reseda sealing jobs get scheduled within 2 – 4 business days. If you’re dealing with a failed seal during a Santa Ana event, call (661) 523-0295 and we’ll get you on the calendar for the earliest available window. Our dispatch is live 24/7, so you’re not leaving a voicemail that waits until Monday.
Written by Roy Castellanos, Owner at Hollis Air Duct Santa Clarita, serving Reseda and the surrounding Valley area.