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 Santa Clarita
Duct sealing in Santa Clarita typically runs $400 – $900 for a whole-home system, and most jobs are completed in a single visit. If your HVAC runs constantly, rooms never reach the thermostat setting, or your energy bills spike every summer, you are probably losing conditioned air through gaps in your ductwork.
We serve Santa Clarita from our Los Angeles dispatch office, with crews covering Valencia, Newhall, Saugus, Canyon Country, and Stevenson Ranch daily. We know the difference between a 1960s Newhall tract with original rigid metal ducts and a 1995 Valencia stucco box with flex runs in a 140°F attic. That local knowledge changes what we find, how we fix it, and what it costs. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Santa Clarita’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. We operate under The Garrison Standard: written prices before any work starts, background-checked uniformed technicians, and a 365-Day Done Right Promise backed in writing on every job. If our seal fails within a year, we return and make it right at no charge, including a free second visit.
Our Santa Clarita customers know the difference between a crew that shows up and one that ghosts. Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. We arrive inside the quoted window, price the job in writing before touching anything, and leave the site clean. That discipline is why homeowners in Santa Clarita call us back for dryer vent cleaning and maintenance.
We carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Aprilaire and Guardsman. These are the same tools commercial crews use, not hardware-store gear, and we explain what each one does for your system before we start.
Duct Repair in Santa Clarita
Duct Repair in Santa Clarita is not a generic fix. The work depends on whether your home sits in the older Newhall and Saugus tracts with rigid metal ductwork, or in Valencia and Stevenson Ranch with flexible ducting common to 1980s – 2000s construction. We inspect with a camera, identify the failure point, and repair or replace the damaged section using mastic and mesh for rigid ducts or proper flex duct connectors and supports for newer systems. A typical duct repair in Santa Clarita runs $250 – $600 depending on accessibility and extent of damage.
Rusted Seams and Separation
In the older Santa Clarita neighborhoods, decades of condensation cycles have corroded metal duct joints. Standard foil tape fails within a season here. We cut out the damaged section, fabricate a replacement, and seal with mastic rated for thermal cycling.
Flex Duct Sagging and Tears
Valencia and Canyon Country attics hit 140°F in summer. That heat cooks the adhesive on flex duct connectors, causing sagging that restricts airflow and tears that leak conditioned air into the attic. We replace connectors, add proper supports, and verify airflow at each register.
Air Duct Sealing in Santa Clarita
Air Duct Sealing in Santa Clarita addresses a specific set of problems driven by our local climate and housing stock. The Santa Ana winds drive fine silt, pollen, and wildfire ash through every gap in your ductwork. In older homes, rusted seams leak return air from hot attics. In newer homes, wind-driven grit abrades flexible duct connectors until they tear. We seal accessible ductwork with mastic and mesh, verify with static pressure testing, and document before-and-after performance. A whole-home air duct sealing in Santa Clarita typically costs $400 – $900.
Mastic Sealing for Metal Ducts
For rigid metal systems in Newhall and Saugus, we brush on water-based duct mastic reinforced with fiberglass mesh. It remains flexible through temperature swings and outlasts any tape product in Santa Clarita’s thermal environment.
Connector Replacement and Plenum Sealing
For flex duct systems, we replace worn connectors at the plenum and trunk lines, then seal the air handler cabinet and filter slot. These are the bypass points that cost you the most money, and they are rarely addressed by a basic cleaning.
Trusted Brands We Service in Santa Clarita
We stock parts and filtration products from Aprilaire, Abatement Technologies, and Guardsman for Santa Clarita homeowners, which means faster turnaround and no waiting on shipped components. Our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines, the same tools we deploy on commercial jobs. When we seal your ducts, we use materials rated for the temperature extremes your attic sees, not hardware-store tape that will fail before the next Santa Ana season.
Common Duct Sealing Problems We See in Santa Clarita Homes
- Rusted seams in Newhall and Saugus metal ducts. Condensation cycles have corroded the joints over decades. Standard foil tape fails within a season, and leaks pull hot attic air into your supply.
- Thermal fatigue in Valencia and Canyon Country attics. Summer attic heat hits 140°F, cooking the adhesive on flex duct connectors. Sagging and tearing create hidden bypass leaks at the plenum that your thermostat cannot detect.
- Wind-driven grit in Stevenson Ranch. Santa Ana winds pull fine chaparral silt and wildfire ash through every gap, acting like sandpaper on flexible duct connectors and wearing them out years early.
- Plenum and air handler cabinet leaks across all Santa Clarita neighborhoods. The connection between your furnace or air handler and the duct trunk is rarely sealed properly at installation. We measure static pressure before and after to prove the fix.
Pricing for Duct Sealing in Santa Clarita, CA
Whole-home duct sealing in Santa Clarita typically runs $400 – $900. Single duct repairs range from $250 – $600 depending on attic accessibility and whether we are working with rigid metal or flexible ducting. What moves the price: the linear footage of accessible ductwork, number of registers to seal, whether we need to replace damaged flex connectors, and if the plenum or air handler cabinet requires sealing.
We give you one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. We take before-and-after photos of your own ducts so you see what was sealed and why. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Santa Clarita
Our crews regularly work in Santa Clarita and the surrounding communities: Stevenson Ranch, Castaic, San Fernando, and Acton. If you are unsure whether your home falls in our service area, call (361) 326-5060 and we will confirm.
Serving Santa Clarita, CA - Our Local Coverage Area
We’re based in the Santa Clarita 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 Santa Clarita
Yes. Sealing return duct leaks prevents the Santa Ana winds from pulling unfiltered attic air, dust, and wildfire ash into your system. In Santa Clarita, we regularly find return leaks that explain why homeowners dust constantly despite good filters. Call (361) 326-5060 for a free inspection.
Newhall and Saugus have 1950s – 1970s rigid metal ducts with rusted seams from decades of condensation. Valencia has 1980s – 2000s flex duct that suffers from thermal fatigue and wind-driven grit abrasion. The sealing method and materials differ completely. Our Duct Sealing team assesses which system you have before quoting.
Sometimes. Musty smells often come from return leaks pulling attic air through rodent debris or old insulation. Sealing those leaks stops the odor source. If microbial growth is inside the duct itself, sealing alone will not fix it, and we will tell you that before we start.
Signs you need sealing: rooms that never reach temperature, HVAC running nonstop, high summer bills, or visible gaps at registers. Signs you need cleaning: visible debris in vents, recent construction, or allergy flare-ups. Many Santa Clarita homes need both. We inspect with a camera and show you before recommending anything.
Yes. Santa Clarita’s semi-arid climate means systems run nearly year-round. Leaky ducts force longer run times for both heating and cooling. Sealing typically reduces HVAC runtime by 15 – 30% in homes with significant leaks. The savings add up fastest in Santa Clarita’s climate compared to milder coastal cities. Call (361) 326-5060 for an exact assessment.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Santa Clarita since 2004 as part of the Garrison Partners family.