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.
Fast, Reliable Duct Sealing Across Parkland
Duct sealing in Parkland typically runs $400 – $950 per HVAC zone and is scheduled by appointment with written pricing confirmed before any work begins. Most Parkland homes have two or three separate systems, so we quote per zone rather than per house. Call (361) 326-5060 for a free estimate.
We serve Parkland from our Seattle office, and our crews know the master-planned communities here. We’ve worked in the gated neighborhoods off 121st Street South, along Hillsboro Boulevard, and throughout the city’s Mediterranean-style estates. These aren’t cookie-cutter homes. They’re large, multi-zone houses with long flex duct runs that need a different approach than a standard 1,500 square foot ranch. Roy Castellanos and our team understand that Parkland’s HOA rules, hurricane-prep building practices, and post-1990 construction all change how duct sealing gets done. When you call, a live person answers, 24 hours a day.
Why Hollis Air Duct Cleaning Is Parkland’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and that track record matters in a city where homeowners expect documentation and accountability. Our technicians are background-checked, uniformed, and trained to The Garrison Standard: arrive inside the quoted window, price in writing before touching equipment, complete the job by the book, and leave the site clean.
Parkland homeowners aren’t looking for the lowest teaser price. They’ve dealt with contractors who balloon estimates once the van is in the driveway. Hollis doesn’t work that way. The price is written down before any work starts, and it does not move at the door. Every repair is backed by our 365-Day Done Right Promise: if the work fails within a year, we return and make it right at no charge, including a free second visit.
Our phones are answered by a live person around the clock. No voicemail loops, no callback queues, no waiting until Monday morning to schedule.
Duct Sealing Services in Parkland
Duct Sealing Services in Parkland focus on closing leaks in the supply and return ductwork so conditioned air reaches the rooms it’s supposed to reach instead of bleeding into attics, wall chases, or crawl spaces. In Parkland’s post-1990 master-planned homes over 3,000 square feet, this almost always means addressing two or three separate HVAC zones with long runs of builder-grade flex duct. We seal each system for static pressure individually rather than treating the house as a single duct network. A typical duct sealing job in Parkland runs $400 – $950 per zone depending on accessibility, the condition of the flex duct, and whether we need to replace torn collars or damaged sections.
Camera-Verified Sealing
We inspect with a duct camera before and after sealing so you see what we see. In Parkland’s large estate homes, this matters because much of the ductwork runs through finished attic spaces and interior chases where leaks aren’t visible from the register. We document each air handler separately.

Static Pressure Testing
After sealing, we measure static pressure at each blower motor to confirm the system is moving air efficiently. Parkland’s long flex duct runs often show pressure drops at distant registers; sealing restores balanced airflow to second-floor bedrooms and bonus rooms that never seemed to cool properly.

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 Parkland
Duct Insulation in Parkland addresses the outer jacket of flex duct that runs through hot attics and humid crawl spaces. Even when the inner liner is sealed, uninsulated or degraded outer wrap lets conditioned air lose temperature before it reaches the vent. In Parkland’s humid subtropical climate, with summer afternoons hitting 95 degrees and year-round moisture in the air, poorly insulated ductwork forces your AC to run longer and harder. Duct insulation replacement in Parkland typically costs $300 – $700 per zone depending on linear footage and whether we’re working in a walkable attic or a tight chase. We use professional-grade materials from Abatement Technologies and Guardsman rated for the moisture loads this climate generates.
Vapor-Barrier Replacement
Original builder-grade duct wrap often tears at contact points with framing or degrades after years of attic heat. We replace the insulation with new wrap that includes an intact vapor barrier, sealed with foil tape at every joint. This stops condensation from forming on cold supply lines during Parkland’s muggy summer mornings.
Insulation Before Sealing
We assess whether insulation or sealing is the priority on each zone. Sometimes the inner liner is intact but the outer jacket is shredded; sometimes both are compromised. We explain what we find, show you the camera footage, and quote each zone separately so you decide what to address first.
Trusted Brands We Service in Parkland
We stock parts and materials from Rotobrush, Abatement Technologies, Guardsman, and Aprilaire for Parkland jobs. That means faster turnaround and no waiting for special-order mastic, foil tape, or replacement flex duct in the sizes these large homes require. Our rotary brush systems and negative-air machines are the same tools commercial crews use, and we select filtration and sealing products rated for the humidity and particle loads that Parkland’s climate produces. When your HOA requires dark, low-profile roof vents or screened AC pads, we source approved profiles that match your community’s architectural review standards.
Common Duct Sealing Problems We See in Parkland Homes
- Builder-grade flex duct tears at the collar. In Parkland’s 1990s – 2000s estate homes, the inner liner separates from the metal collar where flex meets the air handler or register boot. Sealing only the visible boot leaves the real leak hidden inside the attic chase, dumping conditioned air you paid for into unused space.
- Multi-zone systems get rushed with single-price quotes. When a Parkland home has three HVAC zones, a per-house seal job pressures the crew to skip the long runs. We quote per system and document each air handler separately so every zone gets proper attention.
- Hurricane-season sealing traps moisture inside. Exterior gap sealing for storm prep often closes soffit and roof penetrations but misses interior supply and return joints. Moisture, drywall dust, and mold spores keep migrating through unsealed plenums while the homeowner thinks the system is protected.
- Renovation debris settles in flex duct low points. Tile and stone work in Parkland’s luxury homes generates fine dust that finds its way into ductwork. If we seal before source removal and HEPA filtration, that dust gets locked into the system permanently, circulating through your home every time the blower cycles.
Pricing for Duct Sealing in Parkland, WA
A typical duct sealing job in Parkland runs $400 – $950 per HVAC zone. Most homes here have two or three zones, so whole-house work usually falls between $800 and $2,850. What moves the price: how many zones need attention, whether we’re working in accessible attics or tight interior chases, the condition of existing flex duct and collars, and whether hurricane-prep sealing or renovation debris requires additional cleaning before we seal.
We do not quote per vent. That pricing model incentivizes crews to skip the hard-to-reach runs. We price per system, agree to the number in writing before work starts, and document each zone with before-and-after camera footage. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Parkland
Our crews travel throughout the region for Duct Sealing in Parkland and surrounding communities. We regularly schedule jobs in Seattle, Spokane, Tacoma, and Vancouver. Dispatch and routing are coordinated from our Seattle office, with local teams serving each metro area. If you’re outside Parkland city limits but in the broader region, we can still quote your job and schedule service.
Serving Parkland, WA - Our Local Coverage Area
We’re based in the Parkland 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 Parkland
Per-system pricing lets us dedicate the proper time to each air handler and its duct runs without rushing. Parkland’s 3,000-plus square foot homes often have three separate HVAC zones with long flex duct runs; a single house price would pressure us to skip the distant bedrooms and bonus rooms. Call (361) 326-5060 and we’ll count your zones during the free estimate.
Yes. We source HOA-approved vent profiles, collars, and sealant boots that match your community’s architectural review requirements. Our Duct Sealing team coordinates work within approved hours and uses low-profile, dark-finished materials that maintain curb appeal while restoring system efficiency.
We provide before-and-after camera footage of each zone’s supply and return trunks, plus static pressure readings at each blower motor. You get documentation you can reference, share with your HOA, or keep for home-sale disclosure. The 365-Day Done Right Promise covers our sealing work in writing; if it fails, we return at no charge.
Hurricane prep typically seals exterior gaps around soffits, roof penetrations, and AC pads to stop wind-driven rain. It rarely addresses interior duct joints where supply and return plenums connect to air handlers. Those interior leaks still waste energy, circulate attic dust, and let moisture migrate. We seal the duct system itself, not just the envelope around it.
Clean first, then seal. Tile and stone work generates fine dust that settles in flex duct low points. Sealing over that debris locks it into your system permanently. We use Rotobrush rotary agitation and Nikro negative-air HEPA extraction to remove construction dust, then seal the cleaned ducts so they stay clean. Call (361) 326-5060 to schedule both phases.
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 Parkland. We’ll count your zones, show you what the camera sees, and give you a price that doesn’t change when the technician arrives.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Parkland and the greater Seattle metro area.




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