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 Carmichael
Duct sealing in Carmichael typically costs $800 – $2,400 for a whole-home system, depending on whether we’re sealing accessible joints in an attic or chasing leaks through a crawlspace. Most jobs take one day, and we price them in writing before any mastic goes on. Call (361) 326-5060 for a free estimate.
We’ve been working in Carmichael long enough to know the housing stock block by block. The ranch homes off Fair Oaks Boulevard, the mid-century neighborhoods near Del Campo Park, the streets running up toward Cypress Avenue – most of these houses went up between the 1950s and 1970s with galvanized steel trunk lines that are still up in attics, now patched with flex duct from a 1990s HVAC swap. Our crews dispatch from the Sacramento office and carry the tools to handle both materials: mastic and mesh for the steel seams, proper collars and straps for the flex takeoffs. When a Carmichael homeowner calls us about dust on the registers or a blower that won’t stop running, we know to test pressure before we clean anything. Often the problem isn’t dirty ducts. It’s ducts that were never sealed right in the first place.
Why Hollis Air Duct Cleaning Is Carmichael’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has worked in the Sacramento Valley since 2004, and our Carmichael jobs follow The Garrison Standard: arrive inside the window, price in writing, leave the site clean. Our Duct Sealing team knows this city’s housing because we’ve crawled through its attics and crawlspaces for years. We’re familiar with the original ranch layouts off Garfield Avenue, the post-war tracts near Mission Avenue, and the mixed-era homes around Carmichael Park.
Our technicians are background-checked and uniformed. You get their name before they arrive. Every repair carries our 365-Day Done Right Promise in writing – if the seal fails or the pressure drops again within a year, we come back at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops. No callback queues on a Monday morning.
We don’t compete on teaser prices. We compete on the price you can trust: one flat price per system, agreed before work starts, with no per-vent add-ons once the van is in your driveway. That’s the standard we hold to on every Carmichael job.
Duct Sealing Services in Carmichael
Duct Sealing Services in Carmichael address a specific problem most homeowners don’t discover until they have their system tested: conditioned air escaping into attics and crawlspaces before it ever reaches the rooms. In this market, a typical whole-home duct sealing job runs $800 – $1,800 for attic-accessible systems with moderate leak counts, and $1,400 – $2,400 when we need to work in crawlspaces, chase crushed flex runs, or seal multiple material types in the same system. We use duct-sealing mastic – a water-based compound that remains flexible after curing – at all metal-to-metal joints, and we reconnect and seal flex takeoffs with proper collars and mechanical straps rather than zip ties or tape that fails in attic heat.
Pressure Testing Before and After
We run a duct blaster or calibrated fan test to measure leakage in CFM25 before we touch anything. This gives us a baseline and shows you exactly where your money is going. After sealing, we test again. The drop in leakage is documented on the invoice. In Carmichael’s older homes, we commonly see pre-sealing leakage of 25 – 40 percent of total airflow. Post-sealing, we target under 10 percent on supply ducts.
Camera Inspection of Hidden Runs
Flex duct buried under blown-in insulation or pulled tight over rafters can be flattened without any visible sign from the attic entrance. We feed a borescope through the run to find pinch points, disconnections, and gaps at the air handler collar. This is how we found the crushed runs in that 1968 ranch near Del Campo Park – the homeowner had no idea until we showed them the camera feed.
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 Carmichael
Duct Insulation in Carmichael is often the follow-up to sealing, especially on flex runs in vented attics where summer temperatures exceed 140 degrees. Uninsulated or poorly insulated supply ducts lose 10 – 20 percent of their cooling capacity before the air hits the register. In this market, adding or replacing duct insulation runs $600 – $1,500 depending on linear footage and whether we’re working with wrapped fiberglass, foil-faced bubble wrap, or replacing degraded flex duct entirely. We use insulation products from Honeywell and Aprilaire, specified to R-6 or R-8 for attic installations per California Title 24 requirements.
Vapor Barrier Repair
Carmichael’s dry summers and wet winters create expansion and contraction cycles that tear the outer vapor barrier on older flex duct. Once that silver jacket is compromised, the fiberglass insulation gets wet during winter fog events, compacts, and quits insulating. We strip damaged sections and install new flex with an intact vapor barrier, sealed at both ends with mastic.
Attic Heat Gain Reduction
Insulating sealed ducts in a Carmichael attic pays back faster than in milder climates. When outside air is 105 and attic air is 145, every degree of protection matters. We calculate the thermal load reduction and show you the numbers. Some homeowners see a half-ton reduction in effective cooling load, which means their existing equipment cycles properly instead of running flat out.
Trusted Brands We Service in Carmichael
Our vans carry professional-grade equipment from Nikro and Abatement Technologies, and we stock filtration and insulation products from Honeywell, Aprilaire, and Guardsman. For Carmichael homeowners, this means no waiting on parts shipped from out of state. If your system needs a specific collar size, a particular mastic formulation for high-temperature attics, or replacement flex duct that matches your existing diameter, we likely have it on the shelf. Our Sacramento office coordinates inventory for the local service area, so a technician dispatched to a job off El Camino Avenue or near Manzanita Avenue isn’t making a second trip for materials. The same tools we use on commercial jobs in the metro area go into your attic or crawlspace.
Common Duct Sealing Problems We See in Carmichael Homes
- Crushed flex runs in attic retrofits. Flex duct pulled tight over rafters or buried under blown-in insulation gets pinched flat where you can’t see it from the attic hatch. The system loses airflow, the blower works harder, and the homeowner feels weak registers in one or two rooms. Camera inspection finds it; reconnecting and properly supporting the run fixes it.
- Failed crimped seams on original galvanized steel. The 1950s – 70s trunk lines in Carmichael ranch homes were assembled with crimped joints and boot connections. Decades of thermal cycling in 100-degree attic heat open these seams. Homeowners try foil tape, which fails within a season because it can’t handle the expansion. Mastic and mesh is the permanent repair.
- Return duct disconnections at the air handler. Negative pressure in the return side pulls unconditioned attic or crawlspace air directly into the system. In Carmichael, that air carries Central Valley topsoil dust and wildfire smoke particulate. The homeowner smells it in the hallway and assumes they need a cleaning. What they need is a reconnected, sealed return.
- Foundation vent infiltration coating crawlspace ducts. During the dry months, Central Valley topsoil dust blows through foundation vents and settles on crawlspace duct runs. This fine layer masks failing seams and gives the system a distinct valley smell that no amount of register cleaning removes. Sealing the duct perimeter and the foundation vents themselves solves both problems.
Pricing for Duct Sealing in Carmichael, CA
Whole-home duct sealing in Carmichael runs $800 – $2,400. Here’s how that breaks down:
- Attic-accessible system, moderate leaks, steel and flex joints: $800 – $1,400
- Crawlspace work or multiple material types requiring camera inspection: $1,200 – $1,800
- Severe leakage, crushed runs needing replacement, full negative-pressure testing: $1,600 – $2,400
What moves the price: accessibility (attic vs. crawlspace), linear footage of duct, number of material transitions, and whether we’re sealing existing duct or replacing damaged sections before sealing. We do not price per vent. One flat price per system, written down before work starts, guaranteed not to move at the door. Every estimate is free. Call (361) 326-5060 to schedule.
Because so much of Carmichael’s ranch housing still runs on original galvanized steel trunk lines retrofitted with flex branches, a single system here can contain three different duct materials, and each one fails at a different joint – steel at the crimped seams, flex at the collar takeoffs – so sealing has to be mapped run by run rather than treated as one uniform job. That’s why we test first and price second. A homeowner near Del Campo Park called us after a summer of high utility bills and dust settling on the registers in a 1968 ranch with the original galvanized trunk still in the attic. During a camera inspection our tech found two flex runs pinched flat where they were pulled over a rafter and a return that had come loose at the air handler collar, so we sealed the supply and return ducts with mastic at the steel seams and reconnected and sealed the flex takeoffs before running a negative pressure test. Post-sealing static pressure dropped enough that the blower motor stopped short-cycling, and the homeowner reported the valley-dust smell in the hallway was gone.
We Also Serve Cities Near Carmichael
Our crews work throughout the Sacramento metro area, including Rancho Cordova, North Highlands, Fair Oaks, and Mather. Scheduling and dispatch are coordinated from our Sacramento office, with local technicians serving each community. If you’re in one of these neighboring cities and dealing with the same ranch-home duct issues, the same pricing and the same 365-Day Done Right Promise apply.
Serving Carmichael, CA - Our Local Coverage Area
We’re based in the Carmichael 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 Carmichael
Because cleaning removes the dust that was masking the real problem. In Carmichael’s 1950s – 70s ranch homes, decades of Central Valley topsoil dust and pollen pack into leaky seams and cover gaps at flex takeoffs. Once the rotary brush system clears that debris, the airflow increases – and the leaks become audible and measurable. Homeowners call us back when they hear whistling at a register or feel weak airflow in a back bedroom. The cleaning was necessary; the sealing is what keeps the system clean. Call (361) 326-5060 and we’ll test pressure before we quote either service.
We use two tools: a duct blaster or calibrated fan to measure total system leakage in CFM25, and a borescope camera to inspect runs buried under insulation or pulled over rafters. In Carmichael attics with blown-in insulation covering everything, visual inspection finds maybe 30 percent of the leaks. Pressure testing finds all of them. The camera confirms what the numbers suggest – crushed flex, disconnected collars, gaps at the air handler. Call (361) 326-5060 to schedule a pressure test; estimates are free.
Sealing is worth it if the steel is structurally sound. Galvanized trunk lines from the 1960s often outlast the flex retrofits attached to them. We test the steel for rust-through and structural integrity. If the trunk is solid, mastic sealing at crimped seams and proper reconnection of flex branches gives you a system that performs at modern standards for a fraction of replacement cost. If the steel is deteriorated or improperly sized for current equipment, we’ll tell you and quote replacement. Call (361) 326-5060 for an honest assessment.
Wildfire smoke particulate is small enough to pass through standard HVAC filters and enter duct systems through leaks in the return side. In Carmichael, late-summer smoke events are increasingly common, and unsealed return ducts in vented attics or crawlspaces pull that contaminated air directly into the system. Sealing the return path – especially at the air handler collar and trunk seams – is the single most effective step a homeowner can take after upgrading filtration. Call (361) 326-5060 to test your return duct integrity before the next smoke season.
We insulate when the existing insulation is degraded or missing, but we price it as a separate line item so you know exactly what you’re paying for. In Carmichael’s hot-summer climate, sealed but uninsulated flex in a vented attic loses significant cooling capacity. We typically recommend insulation on any flex run we expose during sealing work, and we use R-6 or R-8 products from Honeywell and Aprilaire that meet California Title 24. The combined seal-and-insulate package runs $1,200 – $3,000 depending on system size. Call (361) 326-5060 for a written quote.
Ready to stop losing conditioned air to your attic or crawlspace? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll pressure-test your system, show you the leaks on camera, and give you one flat price in writing before any work starts. Every seal is backed by our 365-Day Done Right Promise – if it fails, we come back at no charge.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Carmichael since 2004.