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 Weymouth Town
Duct sealing in Weymouth Town, MA typically runs $450 – $1,200 for a whole-home system, with most jobs completed in a single visit and priced in writing before we start. If you’re losing heated air through your attic or pulling dust off unpaved roads into your returns, sealed ducts cut energy waste and stop the grit cycle.
We serve Weymouth Town from our Boston office, with crews running the South Shore daily. We know the difference between a 1970s ranch off Route 18 and a converted colonial near Weymouth Landing, and we price accordingly. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Weymouth Town’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family. That track record predates most duct-cleaning outfits advertising in Weymouth Town today. Our Duct Sealing team arrives inside the quoted window, uniformed and background-checked, with the job priced in writing before any mastic goes on.
Weymouth homeowners call us back because the 365-Day Done Right Promise means something here. If a seal fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.
Phones are answered by a live person 24 hours a day, 7 days a week. Scheduling is coordinated from our Boston office, but the crew that shows up knows Weymouth’s housing stock: the postwar splits with undersized trunks, the converted two-families near Jackson Square, the rural properties off Union Street with detached shops on separate handlers.
Duct Repair in Weymouth Town
Duct Repair in Weymouth Town means fixing the physical damage that makes sealing impossible: crushed flex runs, corroded sheet metal, disconnected boots, and returns compromised by decades of retrofit work. In Weymouth’s older center-chimney colonials and converted two-family homes, we routinely find HVAC returns that share or run alongside old chimney chases and basement flues, so repair often means fishing tools through 200-year-old masonry cavities and replacing sections that have been collecting historic debris since the coal-heat era. A typical duct repair in Weymouth Town runs $280 – $650.
When Repair Comes Before Sealing
You can’t seal what you can’t close. A detached boot, a rusted-out trunk section, or a flex run chewed by rodents has to be rebuilt before mastic or foil tape will hold. We inspect with a camera, show you the damage, and write the repair price separately from the sealing scope so you know exactly what each line costs.
Postwar Ranch and Split-Level Repairs
The 1950s – 1970s ranches and splits on Weymouth’s south and east sides often have original sheet-metal trunk lines with leaky takeoffs and asbestos-wrapped joints. We handle the containment and replacement of compromised sections, then seal the rebuilt system to current standards.
Air Duct Sealing in Weymouth Town
Air Duct Sealing in Weymouth Town closes the gaps, cracks, and failed tape joints that let conditioned air escape into your attic, crawl space, or wall cavities. In a town where coastal humidity off the Back River and Weymouth Fore River pushes moisture through every opening, and where cold, damp winters followed by sticky summers mean your HVAC runs hard in both directions, proper sealing stops the energy bleed and the musty register smell that brings so many Weymouth homeowners calling in spring. A typical whole-home air duct sealing in Weymouth Town runs $450 – $1,200.
Mastic vs. Tape on the South Shore
We use water-based duct mastic for permanent seals on rigid metal, applied over clean, dry surfaces. Foil tape has its place for temporary patches or specific manufacturer joints, but on Weymouth’s rural fringe, where unpaved roads load returns with fine grit and pollen, tape alone fails inside one heating season. Mastic, properly applied, lasts.
Outbuilding and Shop Systems
Weymouth’s rural edges near the Rockland and Hingham lines mean detached garages and workshops with separate air handlers. These systems often have open boots, undersized trunks, and long runs that leak air into unconditioned space before it ever reaches the tool bench. We seal them as separate systems with their own scope and price.
Trusted Brands We Service in Weymouth Town
Our equipment roster includes Nikro negative-air machines for controlled pressure during sealing work, Honeywell filtration products to upgrade your system’s particle capture after the ducts are closed, and Aprilaire whole-home ventilators that integrate with sealed systems for balanced airflow. We stock local parts for fast turnaround on common Weymouth configurations, and our Abatement Technologies HEPA filtration protects your home while we’re working inside the ductwork.
Common Duct Sealing Problems We See in Weymouth Town Homes
- Unpaved roads load returns with fine grit. On gravel stretches off Union Street and near the Rockland line, cheap foil-tape seals fail in one heating season as dust and pollen work into the adhesive. Mastic applied over a properly cleaned surface is the only permanent fix.
- Wood heat degrades sealant in converted spaces. Outbuildings and garages with wood stoves or pellet heaters draw creosote-laden soot and ash into nearby returns. Any sealant applied over a contaminated surface will delaminate; we clean first, seal second.
- Detached workshops have undersized trunks and open boots. Long rural runs off Route 18 lose pressure through unsealed takeoffs before air ever reaches the conditioned space. Sealing without sizing correction just pressurizes the leak.
- Coastal humidity cycles destroy tape adhesion. Weymouth’s location on Massachusetts Bay means ducts swing between dry heated air and moisture-laden cooled air. That expansion and contraction pops tape joints; mastic flexes with the metal.
Pricing for Duct Sealing in Weymouth Town, MA
Whole-home duct sealing in Weymouth Town typically runs $450 – $1,200, depending on system size, accessibility, and whether repair work is needed first. A single outbuilding air handler with two to four runs runs $180 – $350. We do not price per vent or per linear foot; we quote one flat price per system, agreed in writing before work starts.
What moves the number: homes near Weymouth Landing with tight crawl spaces take longer than open basements in postwar ranches; rural properties with detached shops require separate scopes; and any system with asbestos-wrapped joints needs containment before we can clean and seal. We inspect, photograph, and price on site. Estimates are free. Call (361) 326-5060.
We Also Serve Cities Near Weymouth Town
Our crews run the full corridor: Weymouth Town is our home base on the South Shore, with regular routes to Boston, Worcester, Cambridge, and Lowell. Scheduling is coordinated from our Boston office, and we carry the same written-price, 365-day guarantee to every stop.
Serving Weymouth Town, MA - Our Local Coverage Area
We’re based in the Weymouth Town 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 Weymouth Town
Every two to three years, not the standard five. Fine grit and pollen off unpaved driveways work into tape seals and mastic edges faster than in paved neighborhoods. We recommend a camera inspection every other fall, before heating season ramps up. Call (361) 326-5060 to schedule.
Yes. Creosote-laden soot and ash drawn into returns contaminate the surface any sealant must bond to. We clean the duct interior with a Rotobrush agitation tool and HEPA vacuum before applying mastic, or the seal will delaminate within months. The cleaning is a separate line item, priced in writing.
Gravel driveways, outbuilding systems, and irregular duct runs add steps: camera inspection of multiple zones, separate scopes for shop and house handlers, and sometimes repair work before sealing can begin. We quote the full window upfront and arrive inside it.
It helps, but it is not the whole solution. Sealing stops humid outside air from entering through leaks, which reduces the moisture load that feeds mold in duct insulation. If mold is already established, we recommend cleaning before sealing. We inspect and advise on site.
Yes. A detached garage shop with its own handler, like the 1970s ranch off Union Street where our tech found two open takeoffs pulling dirt off an unpaved turnaround, requires its own scope, price, and sealant application. We treat it as a second system, not an add-on.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Weymouth Town and the South Shore since 2004.