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 Antelope
Duct sealing in Antelope typically runs $450 – $1,200 for a whole-home system, depending on whether we’re addressing register gaps in a single-story Sun City home or reworking sagging flex runs in a two-story tract near Antelope Greens. We dispatch from our Sacramento scheduling office and keep crews working regularly in the 95843 ZIP and surrounding Antelope neighborhoods. Call (361) 326-5060 for a free written estimate before any work starts.
We’ve been in Antelope homes long enough to know the pattern: nearly every house here went up between the late 1980s and 2000s, and most still run the original builder-grade flex duct. After 20 – 35 years of Sacramento Valley heat cycling through those attics, the seams leak, the supports fail, and the conditioned air you’re paying for ends up cooling your crawl space instead of your bedroom. That’s the work we do here, and it’s different from sealing rigid metal duct in a 1950s bungalow or a brand-new build.
Why Hollis Air Duct Cleaning Is Antelope’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has served the Sacramento metro since 2004 as part of the Garrison Partners family, and our Duct Sealing in Antelope crew knows the local housing stock cold. We don’t send techs who’ve never crawled an Antelope attic; our people understand how the two-story tracts near Ninos Parkway differ from the single-story layouts in Sun City Antelope, and they price accordingly before any ladder goes up.
Our reputation here is built on showing up inside the window, pricing in writing, and leaving the site clean. The Garrison Standard requires it. Every job carries our 365-Day Done Right Promise: if the seal fails or the airflow problem returns within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround.
Background-checked, uniformed technicians arrive in marked vehicles. You know who’s walking in before they knock. Phones are answered by a live person 24 hours a day, 7 days a week, so Antelope residents aren’t stuck in voicemail loops when they need to schedule or ask a follow-up question.
Duct Insulation in Antelope
Duct Insulation in Antelope addresses a specific problem created by our local climate and housing vintage: flex duct running through attic spaces where summer temperatures routinely exceed 140°F, cooking the conditioned air before it ever reaches your registers. We wrap or replace deteriorated insulation on existing duct runs, paying special attention to the sagging sections common in 1990s two-story tracts where original R-6 flex has compressed or torn.
Most Antelope homeowners need duct insulation when they notice hot second-floor rooms despite a running AC, or when they find condensation dripping from ceiling registers during humid winter spells. A typical duct insulation job in Antelope runs $600 – $1,400 for a whole-home system, with smaller single-story Sun City homes toward the lower end and two-story tracts with extensive attic runs toward the upper.
Attic Heat Gain in Older Tracts
The 1980s and 1990s flex in Antelope Greens and surrounding neighborhoods was never designed for decades of 140°F attic exposure. Insulation degrades, R-value drops, and your blower works harder to push overcooled air through a thermal oven. We measure supply air temperature at the register before and after to prove the improvement.
Condensation and Winter Mold Risk
Antelope’s wet winters create a second problem: cold air moving through under-insulated attic ducts meets humid attic air and sweats. That moisture drips onto ceiling drywall and breeds mold. Proper insulation with vapor barrier stops the cycle.
HVAC Duct Sealing in Antelope
HVAC Duct Sealing in Antelope means finding and closing every leak point in your forced-air system, from the air handler cabinet to the last register boot. We use duct sealing mastic, mechanical fasteners, and foil-backed tape rated for HVAC application, not the hardware-store stuff that peels off in attic heat. For homes with accessible ductwork, we also evaluate aerosol-based duct sealing where appropriate.
Antelope homeowners typically call for HVAC duct sealing when rooms won’t stay balanced, utility bills spike, or dust seems to reappear hours after cleaning. A whole-home sealing job in Antelope generally costs $450 – $1,200, with straightforward single-story homes at the lower end and two-story tracts requiring attic rework at the higher. Every price is written down before we start.
Pressure Testing and Leak Quantification
We don’t guess. Our Duct Sealing team pressurizes your duct system and measures leakage in CFM at 25 Pascals. That number tells us whether sealing will solve your problem or whether duct replacement is the honest recommendation. We show you the reading.
Register and Boot Sealing
Many Antelope leaks hide where drywall meets the register boot, especially in homes that have settled since the 1990s. We seal these gaps with mastic and foam backing, then verify with a smoke pencil. It’s tedious work that most crews skip.
Trusted Brands We Service in Antelope
We stock parts and materials from Honeywell, Aprilaire, and Abatement Technologies for Antelope jobs, which means faster turnaround and no waiting on shipping when your system needs a specific fitting or filtration upgrade. Honeywell foil tapes and mastic compounds handle our attic heat without degrading. Aprilaire media cabinets integrate cleanly with existing air handlers common in Antelope’s 1990s-era HVAC installs. Abatement Technologies HEPA filtration products pair well with sealed duct systems for homeowners running continuous filtration. We don’t spec hardware-store tape that fails in six months of Sacramento summer.
Common Duct Sealing Problems We See in Antelope Homes
- Sagging flex in two-story attic chases. In Antelope Greens and near Ninos Parkway, the upstairs flex runs were strapped with plastic ties that degrade in attic heat. The duct sags into coils, kinks flat, and airflow to second-floor bedrooms drops by half. Sealing without re-supporting the run is a waste of money.
- Leaky return plenums pulling attic air. The return side operates under negative pressure, so any gap at the air handler cabinet or return duct sucks 140°F attic air straight into your system. We find these with a smoke pencil and seal them with mastic and metal-backed tape.
- Register boot gaps from 30 years of settlement. Antelope’s tract homes have settled since construction, and the drywall-to-boot joint has opened in dozens of homes we’ve worked. Conditioned air leaks into the wall cavity; we seal with expanding foam and mastic.
- Continuous-run pressure imbalances in retirement homes. Sun City Antelope residents who run their HVAC constantly for filtration create higher static pressure that unmasks small leaks. A sealing job that ignores the return path leaves the problem half-solved.
Pricing for Duct Sealing in Antelope, CA
A typical whole-home duct sealing job in Antelope runs $450 – $1,200. Single-story homes with accessible crawl spaces and straightforward register sealing fall at the lower end. Two-story tracts with attic flex-duct rework, re-strapping, and second-floor balancing run higher. Duct insulation adds $600 – $1,400 depending on linear footage and accessibility.
What moves the price: how much attic crawling is required, whether we need to remove and re-install insulation to access ducts, and whether the job includes re-balancing dampers after sealing. We inspect first, price in writing, and that’s the number at the door. No per-vent add-ons, no “discovered problems” once work starts. Every estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Antelope
Our crews work regularly in Antelope and the surrounding communities: North Highlands, Elverta, Rio Linda, and Citrus Heights. Same scheduling office, same written pricing, same 365-Day Done Right Promise.
Serving Antelope, CA - Our Local Coverage Area
We’re based in the Antelope 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 Antelope
Yes. Single-story homes have longer horizontal duct runs with more joints and register boots, and the same 20 – 35-year-old flex is prone to leaks at seams and plenum connections. Sun City Antelope’s continuous-run HVAC patterns also create higher static pressure that finds gaps rigid systems wouldn’t, which is why many homeowners pair sealing with Antelope Dryer Vent Cleaning to restore full airflow. Call (361) 326-5060 for a free inspection and written estimate.
In Antelope’s 1990s two-story tracts, the problem is usually sagging or kinked flex duct in the attic chase, not just leaks. Sealing the seams without re-supporting the run leaves the physical blockage in place. We inspect with a camera before quoting to determine whether sealing alone will solve it or whether re-routing is needed. Call (361) 326-5060 and we’ll show you what the camera sees.
Most jobs take 4 – 6 hours with the system off, and we schedule around your day. Our technicians work under The Garrison Code: quiet, clean, and out of your way. We cover floors, seal registers to contain dust during the process, and leave the site as we found it. Many Sun City Antelope residents schedule during a grocery or appointment window.
It helps, but it’s not a complete solution. Sealing stops your return ducts from pulling dusty attic or crawl-space air into the system. What it doesn’t do is remove existing dust inside the ducts. For homes with heavy accumulation, we recommend source removal with a rotary brush system and negative-air machine first, then sealing to keep new contaminants out. We price both options in writing.
Yes. Our sealing protocols align with NADCA guidelines for assessment, access, material selection, and post-job verification. We pressure-test to quantify leakage before and after, use HVAC-rated mastic and tape, and verify with visual inspection and smoke testing. The 365-Day Done Right Promise backs the work in writing. Call (361) 326-5060 to discuss your specific system.
In Antelope Greens, we pulled the register in a 1990s two-story and found the upstairs flex run sagging into a coil of attic ductwork; our tech sealed it with mastic and a Honeywell-registered foil tape wrap, then re-balanced the supply and return ducts so the master suite and two bedrooms upstairs actually got air. The homeowner, retired and home most of the day, noticed less dust on the ceiling fan and a quieter blower motor within a week. Before we left, a camera inspection of the run confirmed no kinks and no bypass leakage at the plenum.
Ready to stop losing conditioned air to your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free written estimate on duct sealing in Antelope. We’ll inspect your system, show you where the leaks are, and give you one flat price per system before any work starts. That’s The Garrison Standard.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Antelope and the Sacramento Valley since 2004.