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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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Peabody
We seal ducts in Peabody homes where the real problem isn’t always where you’d expect to find it. From downtown colonials with original galvanized runs to West Peabody ranches with retrofitted flex duct, our crews know what this city’s housing stock hides behind the walls. Dispatch and scheduling run through our Boston office, but the technicians who arrive at your Peabody door are local to the North Shore and familiar with the mix of historic and mid-century construction that defines this market. If you’re losing heated air to your attic or pulling musty basement air into your bedrooms, duct sealing is likely the fix, and we price it in writing before any work starts. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Peabody’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our reputation in Peabody is built on showing up inside the window, pricing before we touch anything, and leaving the site clean. Homeowners here aren’t looking for the lowest teaser quote; they’re looking for the quote that doesn’t change when the van pulls into the driveway. Our 365-Day Done Right Promise covers every duct sealing job in writing – if the seal fails or the airflow problem returns within a year, we come back at no charge, including a free second visit.
Our technicians are background-checked, uniformed, and expected to operate by The Garrison Code on every Peabody job: arrive squared away, explain what you found, write the price down, do the work by the book, and leave the home cleaner than you found it. Phones are answered by a live person 24 hours a day, seven days a week – no voicemail loops, no callback queues.
We serve Peabody from the downtown historic district out to West Peabody and the neighborhoods near Route 1, so when you schedule Duct Sealing in Peabody, you’re getting a crew that knows the local housing stock and the specific failure modes it produces.
Air Duct Sealing in Peabody
Air Duct Sealing in Peabody addresses a problem most homeowners don’t know they have until their heating bills spike or certain rooms stay cold no matter how high the thermostat runs. The process involves finding leaks, gaps, and disconnected joints in your supply and return ductwork, then sealing them with mastic and mesh or specialized tape rated for HVAC use – not the duct tape you’ll find at a hardware store. In Peabody, where winters drop below freezing and summers bring thick humidity, unsealed ducts pull in unconditioned air that forces your system to work harder and circulates dust, mold spores, and debris from attics and basements into your living spaces. A typical whole-system duct sealing job in Peabody runs $800 – $1,800 depending on accessibility, the extent of leakage, and whether asbestos-wrapped sections require special handling before sealant can be applied.
What We Find Behind Peabody Walls
Our camera inspections regularly reveal separated joints in original galvanized duct runs downtown, where decades of thermal expansion and contraction have cracked old mastic or loosened mechanical connections. In West Peabody ranches, we often find flex duct that was jammed into existing chases during central-air retrofits, now collapsed or entirely disconnected at the plenum. The leak isn’t always at the register you can see.
When Sealing Becomes the Priority
We recommend duct sealing when your Peabody home shows uneven heating or cooling between rooms, excessive dust accumulation, or utility bills that climb without explanation. If you’ve already had your ducts cleaned and the problem persists, leakage is the likely culprit. Sealing comes after cleaning on most jobs, since debris-filled ducts hide the real gaps.
Duct Sealing Services in Peabody
Duct Sealing Services in Peabody cover the full range of leakage problems found in this city’s varied housing stock, from sealing accessible metal joints with brush-applied mastic to identifying and documenting asbestos-wrapped sections that require licensed abatement before any sealant work can proceed. Our crews use professional-grade equipment including Nikro negative-air machines to maintain pressure containment during work in occupied homes, and we verify results with before-and-after airflow measurements at the registers. The goal is simple: return the air you’ve already paid to heat or cool to the rooms where you actually live, instead of losing it to your attic, basement, or wall cavities. For a typical Peabody home, comprehensive duct sealing services range from $800 for targeted repairs in accessible basements to $1,800 for full-system sealing in larger homes with multiple problem areas or asbestos-handling requirements.
Our Sealing Process Step by Step
We start every job with a camera inspection and pressure test to map leakage locations, then write the full price down before touching any sealant. Accessible joints get mastic and fiberglass mesh for a permanent seal; inaccessible areas are flagged for repair options. We photograph before and after conditions for your records.
Equipment That Matches the Problem
For containment in Peabody’s older homes, we deploy Nikro negative-air units with HEPA filtration when asbestos-wrapped duct is present. On standard metal duct jobs, we use professional-grade mastic applicators and pressure-testing gear to verify the seal holds. This isn’t hardware-store equipment, and it isn’t applied by guesswork.
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.
Trusted Brands We Service in Peabody
Our sealing work integrates with filtration and air-quality systems from Honeywell, Aprilaire, and Abatement Technologies – brands we specify and stock parts for because they’re common in Peabody homes with upgraded HVAC. If your duct sealing project reveals that your air handler needs a new filter housing or your return plenum requires a fresh gasket, we carry the components to complete that work same-visit rather than ordering parts and rescheduling. We also use Nikro negative-air equipment for containment during jobs where asbestos or heavy debris is a factor. For Peabody homeowners, this means faster turnaround and fewer return trips.
Common Duct Sealing Problems We See in Peabody Homes
- Failed mastic at original galvanized joints in downtown colonial homes. Decades of heating and cooling cycles crack the original sealant, and the gap pulls in unconditioned attic or basement air that carries debris and moisture. We scrape the old mastic, clean the joint, and apply fresh mastic with mesh for a permanent repair.
- Disconnected or crushed flex duct in mid-century West Peabody ranches. Central air was often retrofitted into existing chases with flex duct that collapses or separates at the plenum. Sealing the visible register boot won’t fix a hidden disconnect three feet inside the wall; our camera inspection finds the real break.
- Asbestos-wrapped duct sections that cannot be legally sealed over. Massachusetts regulations require licensed abatement before sealant can be applied to underlying metal. We document these sections, contain the area with negative pressure and HEPA filtration, and refer for proper removal and disposal.
- Condensation damage from Peabody’s humid summers and freezing winters. Temperature swings cause duct metal to sweat in summer and contract in winter, accelerating sealant failure at joints. Proper sealing reduces this cycling and the mold growth that often follows.
Pricing for Duct Sealing in Peabody, MA
Whole-system duct sealing in Peabody typically runs $800 – $1,800. Targeted sealing of accessible basement ductwork in a smaller home or single problem area falls at the lower end. Full-system sealing in a larger home with multiple leakage points, poor attic access, or asbestos-wrapped sections requiring containment and abatement referral runs toward the higher end. We do not quote per-vent prices or bait-and-switch teaser rates; the price we write down before work starts is the price you pay, period. Factors that affect your specific cost include the linear footage of ductwork, accessibility behind walls or in crawl spaces, the condition of existing sealant, and whether Massachusetts-regulated asbestos handling is required before sealing can proceed. Every estimate is free, and we explain exactly what we’re pricing and why before you decide. Call (361) 326-5060 for your exact quote.
We Also Serve Cities Near Peabody
Our crews work throughout the North Shore, including Peabody and neighboring Danvers, Salem, Lynnfield, and Beverly. The same written pricing, 365-Day Done Right Promise, and background-checked uniformed technicians apply in every community we serve.
Serving Peabody, MA - Our Local Coverage Area
We’re based in the Peabody 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 Peabody
No – Massachusetts regulations prohibit sealing over asbestos insulation, and we won’t do work that violates code or endangers your household. We contain the area with negative-air HEPA filtration, document the wrapped sections, and refer you to a licensed abatement contractor for proper removal and disposal. Once the asbestos is cleared by a licensed third party, we return to seal the underlying metal ductwork. Call (361) 326-5060 to schedule an inspection and discuss the sequence.
The real leak is often hidden. In West Peabody ranches where central air was retrofitted into existing chases, flex duct frequently collapses or disconnects at the plenum, inside walls where you can’t see it. Sealing the register boot you can reach doesn’t fix a break three feet upstream. Our camera inspection locates the hidden disconnect so we address the actual problem, not the symptom.
Peabody’s climate puts extraordinary stress on duct joints. Summer humidity causes metal sweating and mold growth at gaps; winter freeze-thaw cycles contract and expand metal, cracking old sealant. Properly sealed ducts reduce this cycling, cut energy waste, and stop the moisture intrusion that degrades indoor air quality. Most Peabody homes we inspect need resealing every 15 – 20 years, sooner if original materials are failing.
No. We pressure-test the system first to quantify leakage, then use a brush to apply HVAC-rated mastic reinforced with fiberglass mesh at every joint, seam, and penetration. This creates a permanent flexible seal that expands and contracts with the metal. We verify results with a second pressure test and airflow measurements at your registers. The “goop” is specifically formulated for ductwork, not hardware-store duct tape, and our Duct Sealing team documents every joint with before-and-after photos for your records.
Yes. Downtown colonials often have original galvanized steel with decades of accumulated debris and failed mastic, plus potential asbestos wrapping that changes our approach entirely. Newer construction typically uses snap-lock duct with simpler access and modern sealant that may just need touch-up. We adjust our inspection method, containment strategy, and sealing technique to match what your specific Peabody home presents – never a one-size-fits-all process.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Peabody and the North Shore since 2004.