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 Newburyport
We’re the crew Hollis Air Duct Cleaning sends to Newburyport when duct seams are leaking conditioned air into attics, crawl spaces, or the gaps between walls. Most sealing jobs in Newburyport run $450 – $1,200 for a whole system, and we price them in writing before touching anything. Our Boston office coordinates scheduling for Essex County, so a uniformed tech can usually be on your driveway within a day or two of your call. We know the difference between a 1980s ranch on the outskirts and a Federal-era home off High Street with retrofitted ductwork snaking through two-hundred-year-old plaster, and we treat them accordingly. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Newburyport’s Preferred Duct Sealing Company
We’ve been doing this since 2004, and our Duct Sealing in Newburyport reputation comes from showing up inside the window, pricing before we work, and leaving the site clean. The Garrison Standard applies to every job: written price, written guarantee, no moving targets.
Newburyport homeowners aren’t looking for the cheapest flyer in the mailbox. They’re looking for a crew that won’t track mud through a South End parlor or pretend a 19th-century chimney chase is the same as a modern trunk line. Our techs are background-checked, uniformed, and trained on the equipment we actually carry: Rotobrush rotary systems, Nikro negative-air machines, and sealing products from Guardsman and Abatement Technologies.
The 365-Day Done Right Promise covers every sealing job in writing. If a joint we sealed fails within a year, we come back 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, seven days a week, so you’re not leaving a voicemail and hoping someone calls back Monday.
Duct Repair in Newburyport
Duct Repair in Newburyport means fixing what’s broken before you can seal what’s leaking. In this market, that often means addressing salt-corroded register boots in waterfront homes, reattaching flex duct that’s pulled free in a tight Cape Cod attic, or patching sections where mortar dust from a crumbling chimney chase has abraded the metal from the inside.
A typical duct repair in Newburyport runs $280 – $650, depending on access and material. We don’t quote per-vent teaser prices. We inspect with a camera, show you what we found, and write down one flat price for the repair.
When Repair Comes Before Sealing
You can’t seal a duct that’s structurally failing. In homes near the Merrimack, we often find register boots rusted through from salt spray; sealing over that corrosion is a waste of money. We cut out the damaged section, replace it, then seal the new joint properly.
Legacy Materials Need Legacy Care
Knob-and-tube wiring routes and original plaster chases aren’t obstacles, they’re conditions we plan for. Our Duct Sealing team sets up negative pressure with HEPA containment before disturbing anything that might hold lead paint dust or fragile plaster.
Air Duct Sealing in Newburyport
Air Duct Sealing in Newburyport closes the gaps where conditioned air escapes into walls, attics, or the spaces between floors. In a coastal climate, this matters more than inland: every cubic foot of heated air you lose in January is a cubic foot your system works harder to replace, and every humid summer breath pulled through a leaky return is a chance for mold to colonize the plenum.
Whole-system duct sealing in Newburyport typically costs $450 – $1,200. Single-room or partial sealing starts around $180. The price is written down before we start, and it doesn’t move at the door.
Mastic, Not Tape, for Coastal Conditions
We seal with Guardsman mastic, a brush-applied compound that flexes with temperature swings and bonds to corroded metal better than foil tape. Tape fails where salt air meets humidity; mastic doesn’t. We apply it to every seam, boot, and joint after cleaning, not over dirt or rust.
Negative Pressure During the Job
Our Nikro negative-air machines pull a vacuum on the duct system while we work, so any dust we disturb goes into a HEPA filter, not your living room. In a Federal-era home with original plaster, this isn’t optional. It’s how we keep our work from becoming your problem.
Trusted Brands We Service in Newburyport
We carry sealing and filtration products from Guardsman, Abatement Technologies, and Aprilaire on our Newburyport vans, not because brand names impress anyone, but because when a register boot on a waterfront home needs replacement, we don’t want to order parts and make you wait. Guardsman mastic is our standard for coastal sealing jobs; it adheres to salt-affected metal where cheaper compounds peel. Aprilaire media filters integrate with systems we’re already sealing, so if your return leak has been pulling unfiltered air for years, we can address filtration in the same visit. Rotobrush rotary tools handle the agitation and cleaning phase before we seal, because sealant bonds to clean metal, not to dust and microbial film.
Common Duct Sealing Problems We See in Newburyport Homes
- Salt corrosion on waterfront register boots. Homes within a few blocks of the Merrimack or the Atlantic see rust form on metal ducts and register seams from the outside in. Sealing over that rust without cleaning and treating it first means the seal fails within a season.
- Mortar dust from historic chimney chases. In the South End and along High Street, original supply and return ducts often vent through 18th- and 19th-century brick chimneys. The mortar those chimneys shed gets drawn into the airstream, abrading metal and coating registers with fine grit that standard cleaning misses.
- Humid-summer mold in leaky returns. Newburyport’s coastal humidity means a return duct pulling attic air in July is also pulling mold spores. Sealing the leak stops the spore source; fogging a “sanitiser” into the duct without fixing the leak does not.
- Retrofitted flex duct in tight plaster chases. Mid-20th-century upgrades to older homes often ran flex duct through spaces never designed for it. The duct pulls free, crushes, or tears at the boot. We repair the damage, then seal so it stays put.
Pricing for Duct Sealing in Newburyport, MA
| Service | Typical Range in Newburyport |
|---|---|
| Single-room or partial duct sealing | $180 – $350 |
| Whole-system duct sealing (average home) | $450 – $850 |
| Whole-system sealing with extensive repair | $800 – $1,200 |
| Register boot replacement + sealing (each) | $120 – $220 |
| Camera inspection and written estimate | Free |
What moves the price: how much of the system is accessible, whether we’re working around original plaster and knob-and-tube, how many boots need replacement due to salt corrosion, and whether the job requires chimney-chase containment. We don’t do per-vent pricing. We inspect, we write one price for the whole system, and that’s what you pay. No teaser coupons that double once the van is in your driveway. Call (361) 326-5060 for a free estimate; we’ll camera-inspect and quote before any work starts.
We Also Serve Cities Near Newburyport
Our crews work throughout Essex County, including Newburyport and the surrounding towns of Salisbury, Ipswich, Haverhill, and Essex. The same Boston-based dispatch, the same written pricing, the same 365-Day Done Right Promise applies whether you’re on Plum Island or inland toward Haverhill.
Serving Newburyport, MA - Our Local Coverage Area
We’re based in the Newburyport 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 Newburyport
Yes. Salt spray from the Merrimack and Atlantic corrodes metal register boots and duct seams from the outside in, especially in homes within three or four blocks of the water. That corrosion creates gaps that leak conditioned air and pull humid outside air into the system, which is why we inspect for rust before sealing and replace corroded boots rather than sealing over them. Call (361) 326-5060 and we’ll show you what we find.
No. Fogging a chemical into a damp coastal duct run without fixing the moisture source is a waste of money. Newburyport’s humid summers mean mold colonies grow back unless you stop the humid air infiltration first. We seal the leaks that pull that air in, then remove source contamination with agitation and negative-air extraction. No fogging required. For a proper inspection and quote, call (361) 326-5060.
Yes, but only with containment. We set up negative pressure with HEPA filtration before disturbing anything in a historic chimney chase, because crumbling mortar and lead paint dust are real hazards in Newburyport’s pre-1850 housing stock. We clean the mortar dust from the duct interior, repair any abrasion damage, then seal with mastic. The chimney itself we don’t seal; we seal the duct running through it. Call (361) 326-5060 to schedule a camera inspection.
Duct repair fixes what’s broken: rusted boots, disconnected flex, sections abraded by mortar dust. Duct sealing closes the gaps where air escapes. In a Newburyport home with retrofitted ductwork, you often need both: repair the structural damage caused by salt corrosion or chimney abrasion, then seal the seams so the system doesn’t leak. We price each phase separately in writing before starting. Call (361) 326-5060 for an exact quote.
We show you before-and-after photos from your own ducts, not stock images. The seams should be coated with mastic, not tape. The boots should be clean metal, not rust sealed over. Your system should run quieter and deliver more even temperatures room to room. And if anything fails within a year, the 365-Day Done Right Promise means we come back at no charge, including a free second visit. Call (361) 326-5060 if you want us to inspect someone else’s work.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Newburyport and Essex County since 2004.