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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Palmdale
Duct sealing in Palmdale typically runs $450 – $1,200 for a whole-home seal depending on system size and accessibility, and most jobs are completed in a single visit. Our crews dispatch from the Los Angeles office and serve Palmdale homes directly, carrying the same professional-grade equipment we’d use on a commercial job in downtown LA. If your registers blow weak, your upstairs rooms never cool, or your energy bill climbs every summer, you’re probably losing conditioned air through cracks and disconnections in your ductwork. Call (361) 326-5060 for a free estimate and written price before any work starts.
We’ve worked in enough Palmdale homes to know the local patterns. The post-2000 tract builds in Rancho Vista and Anaverde, the older stock near Sierra Highway, the wind-scoured west-side developments facing Ventura County – each has its own duct problems, and each needs a different approach. That’s why our Duct Sealing team starts every job with a camera inspection, not a guess.
Why Hollis Air Duct Cleaning Is Palmdale’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Palmdale customers know what The Garrison Standard means: arrive inside the quoted window, price it in writing before touching anything, complete the job by the book, and leave the site clean. No exceptions.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. And our phones are answered by a live person 24 hours a day, 7 days a week – no voicemail loops, no callback queues, no waiting until Monday for a scheduling question.
Every repair we perform in Palmdale is backed by our 365-Day Done Right Promise in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. That guarantee is not negotiable, and we don’t bury it in fine print.
Duct Insulation in Palmdale
Duct Insulation in Palmdale addresses a problem most homeowners don’t notice until their summer electric bill arrives: attic ductwork baking in 140-degree attic air, then trying to push 55-degree conditioned air through walls and ceilings. In Palmdale’s high-desert climate, uninsulated or poorly insulated flex duct loses 20 – 30% of its cooling capacity before the air ever reaches your registers. A typical Duct Insulation job in Palmdale runs $600 – $1,800 depending on linear footage, insulation R-value, and whether we’re wrapping existing duct or replacing degraded material.
When Attic Heat Destroys Efficiency
Palmdale’s triple-digit summer days and intense attic temperatures cook standard flex duct from the outside in. The outer vapor barrier cracks, the fiberglass batting compresses, and your AC runs longer to hit the same thermostat setting. We wrap accessible runs with fresh insulation rated for high-temperature exposure, sealed at every joint, so the air that leaves your handler arrives at the register at the temperature you paid to create.
Cold-Night Heat Loss in Desert Winters
Palmdale winter nights drop below freezing regularly. Uninsulated supply ducts in vented attics lose heat fast, and your furnace cycles more often to compensate. Proper insulation keeps heated air hot from the plenum to the register, reducing wear on your heat exchanger and cutting gas or electric consumption through the heating season.
HVAC Duct Sealing in Palmdale
HVAC Duct Sealing in Palmdale fixes the leaks, gaps, and disconnected collars that let conditioned air escape into your attic, crawl space, or wall cavities. In a typical Palmdale home, we measure 15 – 25% duct leakage on a first inspection, and we’ve seen older systems lose 40% or more. A whole-home HVAC Duct Sealing job in Palmdale generally costs $450 – $1,200, with simpler partial seals starting around $300. We price by the system, not by the vent, and we write the number down before any work begins.
Pressure Testing Before and After
We run a duct blaster or calibrated pressure test to quantify leakage before we start. This gives you a baseline in CFM25 – cubic feet per minute of leakage at 25 Pascals of pressure. After sealing with mastic, tape, and mechanical fasteners where appropriate, we test again. You see the number drop. That’s how we verify the work, not with a flashlight and a promise.
Mastic vs. Tape in Desert Conditions
Palmdale’s thermal cycling destroys cheap duct tape in two to three years. We use water-based duct mastic for permanent seals, reinforced with mesh at stress points. In older homes with rigid metal duct near Sierra Highway, we may replace failing tape with foil-backed butyl or apply new mastic over original sealant that’s cracked from decades of dry heat and winter cold.
Trusted Brands We Service in Palmdale
Our vans carry professional-grade equipment from Nikro and Abatement Technologies, and we stock filtration and sealing products from Honeywell and Aprilaire for Palmdale customers who want verified components, not hardware-store substitutes. When your system needs a specific collar, damper, or sealant rated for high-temperature attic exposure, we don’t make a second trip. We carry the parts that match what your builder installed, and we explain the difference between builder-grade and upgrade options in plain terms before you decide.
Common Duct Sealing Problems We See in Palmdale Homes
- Crushed flex duct at attic bends in Rancho Vista and Anaverde. Builder-grade flex duct installed during the 2000s housing boom was often routed through tight attic spaces with sharp turns. Years of thermal cycling in Palmdale’s extreme temperature swings cause the wire helix to fatigue and collapse, creating a choke point that leaks air and restricts flow to entire zones.
- Disconnected collars from Mojave wind and sand infiltration. High-desert wind events drive fine sand through exterior vents and HVAC returns, accumulating in the air handler and blower housing. The added vibration and imbalanced load stress duct connections, and abrasive particles erode sealant at flex-duct joints faster than in coastal climates where air is cleaner and more stable.
- Rodent intrusion and cracked mastic in Sierra Highway-area rigid duct. Older homes near the original downtown often have original metal ductwork with aging mastic and fiberglass tape. Low humidity desiccates these materials, and rodent access through evaporative-cooler transitions or attic vents creates entry points. The result: supply leaks that pressurize attics and return leaks that pull attic dust into living spaces.
- Construction debris and drywall dust in never-cleaned post-2000 systems. Palmdale’s rapid growth meant fast-tracked construction with minimal duct protection during drywall and finish work. We regularly find returns choked with debris that restricts airflow, strains the blower motor, and masks underlying disconnections that only a camera inspection reveals.
Pricing for Duct Sealing in Palmdale, CA
Whole-home duct sealing in Palmdale typically costs $450 – $1,200. Partial sealing of a single zone or repair of a known disconnected run starts around $300. Duct insulation runs $600 – $1,800 depending on linear footage and material. These are whole-system prices, not per-vent teaser rates that balloon once the technician is inside your home.
What moves the number: system size (square footage and register count), attic accessibility (truss spacing, duct height, presence of blown-in insulation), condition of existing duct (whether we’re sealing over sound material or replacing crushed/disconnected runs), and whether we combine sealing with source removal or insulation.
We write the price down before any work starts. It does not move at the door. No per-vent add-ons, no “discovered problems” that weren’t in the original scope. If our inspection finds something unexpected, we stop, explain it, and give you a revised written price before proceeding. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Palmdale
Our crews regularly travel to Acton for rural ranch properties with long duct runs, Altadena for hillside homes with complex zoning, Sierra Madre for older Craftsman-era systems, and Pasadena for historic and new-construction work alike. Scheduling and dispatch for Duct Sealing in Palmdale and these surrounding communities is coordinated from our Los Angeles office, with local crews serving each area directly.
Serving Palmdale, CA - Our Local Coverage Area
We’re based in the Palmdale 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 Palmdale
Because builders in Palmdale’s rapid-growth periods often used minimum-grade flex duct and rushed sealing during construction. Drywall dust, construction debris, and crushed runs are common in 2010s builds in Anaverde and Rancho Vista. The seals fail within two to five years from thermal cycling and vibration, not age. Call (361) 326-5060 for an inspection if your new home has weak airflow or uneven temperatures.
Palmdale’s persistent wind events drive Mojave sand and Joshua tree/creosote pollen through returns at volumes coastal systems never see. The particulate load strains blowers, increases vibration at duct joints, and abrasive particles erode sealant faster. Coastal LA’s mild, stable climate doesn’t produce the same thermal cycling or particulate assault. Our Palmdale sealing jobs account for both factors with heavier mastic application and reinforced mesh at stress points.
Yes. We regularly work on Sierra Highway-area homes with original rigid metal duct and swamp-cooler transitions. The process involves replacing degraded tape and mastic at the transition collar, sealing rodent entry points, and pressure-testing the entire system. These older systems often benefit most from sealing because they’ve never had it done. Call (361) 326-5060 to schedule an inspection.
Partially, but not fully. Sealing fixes the leaks that lose pressure before air reaches your registers, but a clogged blower or dirty evaporator coil still restricts flow at the source. We inspect both during our camera and pressure evaluation. If your air handler is clogged with Palmdale’s characteristic fine desert dust, we’ll recommend source removal first, then sealing, so you get the full benefit of both.
Disconnected flex-duct collars at the air handler plenum, caused by years of thermal cycling in unconditioned attics that swing from below freezing to over 140 degrees. The wire helix fatigues, the sealant cracks, and the collar pulls loose. We find this in probably half the Palmdale attic systems we inspect, especially in post-2000 tract homes with builder-grade materials. It’s fixable in one visit with proper mastic, mechanical fasteners, and reinforcement.
In the Anaverde subdivision, a homeowner called about a persistent musty smell and uneven cooling in a 2014 build where the builder-grade flex duct had never been cleaned. Our tech ran a camera inspection through the return chase and found drywall dust, construction debris, and a crushed run behind the air handler that was leaking conditioned air into the attic. We performed source removal under negative pressure with HEPA filtration, sealed the crushed section and several disconnected collars, and the static pressure dropped enough to restore even airflow to the upstairs registers.
Palmdale’s high-desert position at 2,600-3,000 feet means flex duct and attic connections endure year-round UV exposure, triple-digit summer heat, and winter nights that drop below freezing, so duct seals here crack from thermal cycling and dry rot far faster than in coastal LA’s mild, stable climate. This isn’t a theory. We see it in inspection after inspection, from Rancho Vista to the west-side developments facing Ventura County. The desert sun bakes attic ductwork from June through September, then January nights freeze whatever moisture remains in mastic and tape, accelerating the cycle. By year five or six, many Palmdale homes have leaks that would take a decade to develop in Long Beach or Santa Monica.
That’s why we don’t seal and run. We inspect with cameras, pressure-test before and after, and write our 365-Day Done Right Promise on every job. If you’re in Palmdale and suspect your ducts are leaking – weak airflow, hot upstairs rooms, dust that returns within days of cleaning, or energy bills that climb every summer – call (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, and we’ll stand behind that work for a full year.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Palmdale since 2004.