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 Westlake
Duct sealing in Westlake typically costs $400 – $900 for a whole-home seal depending on system size and accessibility, and most jobs are scheduled within a week of your call. If you’re noticing hot upstairs bedrooms in summer, cold spots in winter, or dust collecting near your furnace, the problem is often leaky ductwork, not your HVAC unit itself.
We’ve been serving Westlake homeowners since 2004, and our crews know the local housing stock inside and out. From the two-story subdivisions off Crocker Road to the lakefront homes near Clifton Park, we see the same patterns: original flex duct installed with minimal sealing at the boots and takeoffs, pressure imbalances between floors, and homeowners who’ve been told they need a new furnace when what they really need is a proper seal. Our Duct Sealing in Westlake crews dispatch from our Cleveland office, so we’re never far from your neighborhood. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Westlake’s Preferred Duct Sealing Company
We don’t chase the lowest bid. We compete on discipline. Every Hollis job in Westlake runs on The Garrison Standard: arrive inside the quoted window, price it in writing before touching anything, complete the work by the book, and leave the site clean. Our technicians are background-checked and uniformed, and you’ll know who’s arriving before they knock.
Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround. That’s been our standard since 2004, and it’s why Westlake homeowners call us back when they move to a new house or refer us to neighbors.
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 to schedule. When you call (361) 326-5060, you’ll speak to someone who can book your appointment and explain what to expect.
Duct Insulation in Westlake
Duct Insulation in Westlake addresses a specific problem: metal or flex duct running through unconditioned attics, crawl spaces, or garage chases loses heated or cooled air before it reaches your rooms. In Westlake’s climate, where winter temperatures drop below 20°F and summer humidity climbs above 70%, uninsulated ductwork can bleed 20 – 30% of your energy dollars into spaces that don’t need conditioning. A typical duct insulation job in Westlake runs $600 – $1,400 depending on linear footage and accessibility.
When Insulation Matters More Than Sealing Alone
Some Westlake homes, particularly the 1980s ranches near the lake, have ductwork that is sealed adequately but runs through a hot attic or cold crawl space with no thermal barrier. In these cases, adding insulation with a proper vapor barrier prevents condensation and thermal loss that sealing alone cannot fix. We use professional-grade insulation products from Guardsman and Abatement Technologies, specified to your duct material and the space it travels through.
Combining Sealing and Insulation
On many Westlake jobs, especially in the two-story subdivisions along Detroit Road, we find both leaks and uninsulated runs. We seal first with mastic and mesh, then insulate the repaired sections. The price for combined sealing and insulation typically falls between $900 and $1,800. We write it down before we start, and that number does not move at the door.
HVAC Duct Sealing in Westlake
HVAC Duct Sealing in Westlake is the process of closing gaps, cracks, and disconnected joints in your forced-air system so that conditioned air reaches the rooms it was meant to serve. We use mastic sealant and fiberglass mesh on metal duct, and specialized sealant compatible with flex duct materials, applied after source removal cleaning so we’re sealing clean surfaces, not trapping debris. A whole-home HVAC duct sealing in Westlake typically costs $400 – $900, with larger or multi-zone systems at the higher end.
Pressure Testing Before and After
We pressurize your duct system and measure leakage at the start of every job. After sealing, we test again. Westlake homeowners see the numbers. In the Crocker Road subdivisions, we commonly measure 25 – 35% leakage at the start and single-digit percentages when we’re done. That drop translates directly to more even temperatures, less dust, and lower utility bills.
What We Find in Westlake Homes
Most Westlake duct sealing calls don’t start with visible dust. They start with pressure imbalance complaints in the 1990s two-story subdivisions along the Detroit Road corridor, where the original flex duct was installed with minimal sealing at the takeoffs and boots. That leak profile is specific to Westlake’s development-era construction, not the older lakefront homes a few streets north. We were called to a two-story on a Crocker Road subdivision cul-de-sac where the upstairs bedrooms ran hot in summer and cold in winter while the furnace-room floor stayed dusty. Camera inspection showed three crushed flex runs and open boot joints the original installer never sealed. We performed source removal under negative pressure with agitation tools, then sealed the boots, plenum seams, and takeoffs, and the homeowner called back a week later to say the zone imbalance had flattened out.
Trusted Brands We Service in Westlake
We carry professional-grade equipment and materials on every Westlake job. Our rotary brush systems come from Rotobrush, our negative-air machines from Nikro, and our sealing and insulation products from Abatement Technologies and Guardsman. For filtration upgrades tied to sealing work, we stock Aprilaire media cleaners and Honeywell electronic air cleaners. We keep common boot sizes, takeoff collars, and mastic compounds on our vans so we’re not waiting on parts while your system sits open. That matters in Westlake, where lake-effect weather can turn a one-day job into a headache if the crew has to reschedule for materials.
Common Duct Sealing Problems We See in Westlake Homes
- Unsealed takeoffs and boot collars in 1990s subdivisions. Original 1980s – 2000s flex duct in Westlake’s planned subdivisions leaks at unsealed takeoffs and boot collars, so supply air bleeds into unconditioned chases instead of reaching upstairs rooms. We find this pattern repeatedly in homes off Crocker Road and along the Detroit Road corridor.
- Crushed flex runs from attic storage or pest activity. Westlake’s mature trees and established neighborhoods mean squirrels and raccoons sometimes access attics through gable vents, crushing flex duct or pulling it loose from boots. Camera inspection finds the damage before we seal.
- Condensation and moisture inside cold-metal runs. Lake Erie humidity condenses inside cold-metal runs during Westlake’s winter-to-summer swings, and sealing an already-damp duct traps moisture that feeds mold and mildew. We always inspect for moisture before sealing, and we’ll tell you if cleaning or drying is needed first.
- Failed DIY foil-tape patches. DIY foil-tape patches on flex duct fail within a season of thermal cycling, and the tape residue makes a proper mastic-and-mesh seal harder when we arrive. If you’ve tried patching yourself, let us know so we can budget extra prep time.
Pricing for Duct Sealing in Westlake, OH
Whole-home duct sealing in Westlake runs $400 – $900 for most single-family homes. Smaller ranches with basement ductwork and easy access fall at the lower end. Two-story homes with zoned systems, attic runs, or multiple plenums fall at the higher end. Duct insulation adds $600 – $1,400 depending on linear footage. Combined sealing and insulation typically ranges $900 – $1,800.
What moves the price: accessibility (crawl space vs. full basement), number of zones, extent of damage requiring repair versus pure sealing, and whether we find moisture or mold that needs remediation before sealing. We inspect first, write the price down, and get your approval before touching anything. No per-vent pricing, no teaser coupons, no invoice that doubles once the van is in your driveway. Call (361) 326-5060 for a free estimate. Estimates include pressure testing and camera inspection of accessible runs.
We Also Serve Cities Near Westlake
Our Duct Sealing crews regularly work in Bay Village, North Olmsted, Rocky River, and Avon. If you’re in a Westlake subdivision near the border with one of these cities, we likely already know your neighborhood’s duct patterns and building era. Scheduling is coordinated from our Cleveland office for efficient routing across the west side.
Serving Westlake, OH - Our Local Coverage Area
We’re based in the Westlake 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 Westlake
It’s usually negative pressure from leaky return ductwork. When the return side pulls air from gaps near the furnace instead of from your rooms, it draws dust from the basement or utility closet and deposits it on nearby surfaces. The same leak that causes the dust also reduces airflow to upstairs rooms. We seal the return plenum and boot joints, then test pressure balance room to room. Call (361) 326-5060 for an exact quote – estimates are free.
Yes, if the temperature imbalance is caused by duct leakage rather than an undersized system. In Westlake’s 1990s two-story subdivisions, we find that 25 – 35% of conditioned air leaks into chases and attics before reaching upstairs vents. Sealing those leaks restores designed airflow. We pressure-test before and after so you see the improvement in numbers, not just comfort. Call (361) 326-5060 for an exact quote – estimates are free.
Only if sealing is done without inspecting for existing moisture. Lake Erie humidity does condense inside cold ductwork during seasonal transitions, and sealing a damp duct traps that moisture. We always camera-inspect and, if needed, dry or clean before sealing. In some Westlake lakefront homes, we also recommend upgrading to insulated duct or adding a dehumidification strategy. Call (361) 326-5060 for an exact quote – estimates are free.
We seal with professional-grade mastic and mesh from Abatement Technologies, use Rotobrush rotary systems for pre-seal cleaning, and stock Guardsman insulation products for thermal upgrades. For filtration improvements tied to sealing work, we install Aprilaire and Honeywell products. Every material is specified to your duct type and installed according to manufacturer guidelines. Call (361) 326-5060 for an exact quote – estimates are free.
Cleaning removes debris; sealing closes the gaps where debris enters and conditioned air escapes. In Westlake’s 1990s subdivisions, we often recommend both: source removal under negative pressure with Nikro equipment, then mastic sealing at the leaks we found during cleaning. Cleaning alone won’t fix a pressure imbalance, and sealing dirty ducts traps contaminants. We inspect and quote each need separately, then write one combined price if you want both. Call (361) 326-5060 for an exact quote – estimates are free.
Ready to stop throwing heated and cooled air into your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free duct sealing estimate in Westlake. We’ll pressure-test your system, camera-inspect the accessible runs, and write down a flat price before any work starts. Every seal is backed by our 365-Day Done Right Promise: if it fails, we come back and make it right at no charge.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Westlake since 2004.




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