Fast, Reliable Duct Repair & Sealing Across Kent
Most duct repair and sealing jobs in Kent run $280-$650, with flex duct replacement in older student rentals sometimes reaching $800 if multiple sections are crushed or disconnected behind drywall. We typically arrive same-day or next-day to Kent addresses, with scheduling coordinated from our Seattle office and crews dispatched directly to your neighborhood. Call (844) 685-6342 for upfront pricing before we start.
We’ve worked Kent long enough to know the difference between a house on East Main Street and a converted rental near Kent State University. The housing stock here is older, denser, and more heavily modified than what you’ll find in Federal Way or Auburn. That matters when we’re crawling through a townhome utility chase or cutting into a drywall patch a landlord slapped over a crushed flex run. Our Duct Repair & Sealing team knows how to fix what’s actually broken, not just run a vacuum and call it done.
Why Bellows Air Duct & Vent Co. Is Kent’s Preferred Duct Repair & Sealing Company
We’ve been in business since 1984, and Ray Castillo still stands behind every job personally. In Kent, that reputation travels by word of mouth through landlord networks and tenant turnover. We’ve earned it by showing up when we say, pricing honestly before any tool comes out, and fixing it right the first time so we’re not back next semester.
Kent customers know our technicians by the uniform and the camera they carry. Every job gets inspected before and after, with footage you can see. No claim without proof. Our 90-Day Done Right Promise is stamped on every invoice: if it’s not right, we return at no charge. No paperwork to file, no argument to have.
Calls to our office reach a live person 24 hours a day. Not an app, not a callback queue. That’s mattered to Kent landlords who get a complaint at 10 p.m. and need someone scheduled by morning.
We understand the access constraints here. Alley-load townhomes on the west side, narrow entries near the historic district, security-focused buildings where we coordinate with tenants directly. We work around move-in and move-out windows because we have to.
Our Duct Repair & Sealing Services in Kent
Duct Sealing
Leaky ducts waste 20-30% of heated or cooled air before it reaches your rooms. In Kent’s 1940s-1970s housing stock, especially the KSU-area rentals in 44240, we’ve found original metal seams that have never been properly sealed and flex connections that pull apart with every furnace cycle. Our crew seals joints with mastic and reinforced mesh, not tape that dries and fails. A typical duct sealing job in Kent runs $280-$450 for a single system.
Flex Duct Repair
This is where Kent’s rental market shows its scars. Landlords drywall over damaged flex ducts between tenants rather than replace them. We cut out the bad section, install new insulated flex rated for the run length, and secure it with mechanical fasteners and mastic. Flex duct repair in Kent typically costs $180-$340 per section, more if we need to open and repair a concealed chase. Near the Cuyahoga River valley, we traced weak airflow in a converted 1950s bungalow on a student-rental block to a crushed flex duct behind a drywall patch. We cut out the damaged section, installed new insulated flex, and sealed all take-offs with mastic, restoring balanced pressure and cutting the tenant’s dust complaint in half.
Metal Duct Repair
Kent’s original sheet-metal systems, common in pre-1970 homes along Streetsboro Road and in the neighborhoods north of campus, corrode at seams and can separate at elbows. We patch small holes with galvanized sheet and sealant, replace rusted sections, and reinforce sagging supports. Metal duct repair in Kent runs $320-$580 depending on accessibility. Where walls would need opening, we often reseal existing joints from accessible points rather than tear into plaster.
Duct Insulation
Uninsulated or degraded duct wrap in attics and crawl spaces costs Kent homeowners every month on their utility bill. We install new foil-faced fiberglass insulation or closed-cell wrap on exposed runs, with particular attention to ducts passing through unconditioned spaces. Duct insulation in Kent typically runs $400-$750 for a full system. In the damper homes near the Cuyahoga River valley, proper insulation also reduces condensation that feeds mold growth inside the duct.
Mastic Sealant Application
We use mastic, not duct tape, on every joint we touch. Mastic stays flexible, won’t dry and flake, and creates an airtight seal that lasts. For Kent’s older systems with multiple previous repairs, we’ll often reseal the entire accessible network with mastic as a preventive measure. Mastic resealing of an existing system runs $350-$550.
Air Leak Repair
Disconnected boots, missing end caps, and gaps where ducts meet drywall are common in Kent’s converted rentals. We pressure-test the system to find leaks, then repair and seal. Air leak repair typically costs $200-$400 in Kent, depending on how many points need attention.
What happens when you call
- 1
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.
Trusted Brands We Service in Kent
We carry parts and materials from Nikro, Honeywell, and Aprilaire on our trucks, which means most Kent jobs finish in a single visit without waiting on ordered components. For specialized applications in older homes, we source from Abatement Technologies. Our technicians know these systems because they’ve installed and repaired them for decades, not because they read a manual that morning.
Common Duct Repair & Sealing Problems We See in Kent Homes
- Crushed flex ducts hidden behind drywall patches. Kent’s student-rental turnover near Kent State University means ducts in 44240 are often patched with drywall and tape between tenants, hiding crushed flex runs and disconnected metal sections that need re-sealing more than cleaning.
- Mastic failure from repeated moisture exposure. Kent sits in the Northeast Ohio snow belt and receives persistent lake-effect moisture off Lake Erie, driving elevated indoor humidity from October through April. Forced-air systems running nearly six months straight in this damp environment accelerate mold and dust accumulation inside duct runs, especially in the poorly air-sealed student rentals close to the Cuyahoga River valley corridor through town.
- Disconnected metal seams in original 1940s-1960s systems. The bulk of Kent’s residential stock near campus consists of mid-century homes with original sheet-metal or flex-duct systems, many retrofitted multiple times as properties were subdivided for student use. These aging, multi-tenant conversions frequently have disconnected or crushed duct sections hidden behind improvised drywall.
- Biological growth in neglected systems. Landlords around the KSU campus routinely list properties for rent without any HVAC service between student leases, so local technicians commonly pull biological growth and years of compacted debris out of systems in homes that look freshly painted on the outside. The cosmetic flip without the mechanical flip is a Kent-specific pattern.
Pricing for Duct Repair & Sealing in Kent, WA
We’re straightforward about numbers because we’ve seen what bait-and-switch pricing does to trust. Here’s what duct repair and sealing costs in Kent:
| Service | Typical Range in Kent |
|---|---|
| Duct sealing (mastic, accessible joints) | $280-$450 |
| Flex duct repair/replacement (per section) | $180-$340 |
| Metal duct repair (patch or section replace) | $320-$580 |
| Duct insulation (full system) | $400-$750 |
| Mastic resealing of existing system | $350-$550 |
| Air leak detection and repair | $200-$400 |
Factors that push costs higher: concealed ducts behind finished walls, multiple crushed sections in a single run, mold remediation requirements, and access constraints in tight townhome chases. We diagnose before we quote, and the price we give is the price on the invoice. No change at the door.
We offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount. Estimates are free. Call (844) 685-6342.
We Also Serve Cities Near Kent
Our crews work Kent regularly and also handle calls from Federal Way, Auburn, Renton, and Tacoma. Each city’s housing stock presents different challenges, from Auburn’s newer subdivisions to Tacoma’s historic homes, and we adjust our approach accordingly. Scheduling is coordinated from our Seattle office with local dispatch to your area.
Serving Kent, WA - Our Local Coverage Area
We’re based in the Kent 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 - Duct Repair & Sealing in Kent
Because the ducts are likely still leaking. Cleaning removes debris, but if seams are open or flex is crushed behind a wall, dirty attic or crawl space air gets pulled in every time the furnace runs. In Kent’s 44240 rental stock, we’ve found that disconnected take-offs behind drywall patches are the real culprit, not the ducts themselves. We pressure-test to find the actual leak points, then seal them properly. Call (844) 685-6342 for a free estimate.
We coordinate directly with you or your tenant to schedule during a move-in window or when someone is available to admit us. Our tools fit through standard residential entries, and for alley-load units with limited access, we stage materials outside and work in sections. We don’t need to remove security hardware. If you’re a landlord, we can schedule around your tenant’s availability and send confirmation directly to them.
Usually, yes. Original sheet-metal systems in Kent homes often have accessible seams in basements, attics, and crawl spaces where we can apply mastic and reinforced mesh. Where ducts pass through finished walls, we seal from the nearest accessible point and pressure-test to confirm the fix. Full wall opening is rare. Most metal duct sealing in Kent homes runs $320-$450.
Yes. Kent’s persistent moisture from October through April creates condensation inside poorly insulated or leaky ducts, which degrades tape adhesives and accelerates rust at metal seams. Mastic holds up better than tape in damp conditions, which is why we use it exclusively. Proper sealing plus adequate insulation prevents the moisture intrusion that causes mold and mastic failure in the first place.
Repainting doesn’t reach the ductwork. In Kent’s rental market, cosmetic turnover is common but mechanical service is rare. Musty smells usually mean mold growth inside the duct, often from a leak or disconnected boot pulling damp crawl space air. We camera-inspect to find the source, repair the leak or disconnection, and seal the system so it stays dry. Call (844) 685-6342 - we’ll give you a straight answer about whether it’s a sealing issue or something more extensive.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Kent and communities across the region since 1984.