Fast, Reliable Duct Repair & Sealing Across Burlington
Duct repair and sealing in Burlington, MA typically costs between $350 and $1,200 depending on whether we’re sealing joints with mastic, repairing degraded fiberglass duct board, or replacing sections of metal trunk line. Most Burlington homeowners see us same-day or next-day because we’re based in Boston and know the Route 128 corridor well. Call (888) 597-5659 for a free estimate — Scott handles every job personally.
We’ve been driving to Burlington for 11 years, and the houses tell a story the moment we pull up. The ranches off Cambridge Street, the split-levels on Winn Street, the raised colonials tucked behind the Burlington Mall — most were built in a 20-year window between 1955 and 1975, and many still run their original ductwork. That means galvanized steel with unsealed joints, flex duct that’s hardened and cracked, and fiberglass duct board interiors that have been shedding fibers for decades. Our Duct Repair & Sealing team doesn’t just vacuum over these problems — we fix them at the source.
Why Everest Air Duct Cleaning Service Massachusetts Is Burlington’s Preferred Duct Repair & Sealing Company
617 customers have rated us 4.9 stars, and a growing share of those reviews come from Burlington neighborhoods where homeowners finally found someone willing to crawl into a 1960s crawlspace and actually repair what’s broken. Scott Gray answers the phone, drives the van, and runs the Rotobrush himself — the same hands that seal your ducts are the ones that quoted the job.
Our response time to Burlington averages same-day to 24 hours because we know the Cambridge Street and Winn Street corridors and don’t waste time getting lost in office park loops. We’ve developed specific expertise with the town’s age-clustered housing stock: original sheet-metal and fiberglass duct board systems that are now 50–70 years old and were never designed for the kind of particulate load they carry today. That local knowledge means we diagnose faster and fix it right the first time — no sending a junior tech to guess at a system he’s never seen before.
Our Duct Repair & Sealing Services in Burlington
Mastic Sealant Application
Burlington’s original galvanized ducts from the 1960s and 1970s were installed with unsealed joints — standard practice then, energy-wasting now. We brush on industrial-grade mastic sealant to every joint, seam, and penetration, creating a permanent airtight bond that tape alone can’t match. In the crawlspaces beneath Winn Street ranches, we’ve measured 25–35% air loss through these unsealed joints before treatment. After mastic sealing, that drops to under 5%. The mastic we use remains flexible through Burlington’s freeze-thaw cycles, so it won’t crack like cheap tape when your furnace kicks on in January.
Metal Duct Repair & Replacement
When fiberglass duct board degrades beyond sealing, or when galvanized trunk lines have rusted through from decades of condensation, we fabricate and install new metal duct sections on-site. On a split-level on Winn Street near the I-95 interchange, we found the original fiberglass duct board return had frayed and was shedding glass fibers into the airflow. We sealed the degraded sections with mastic and replaced the return trunk with metal duct, using our Rotobrush and Nikro HEPA vac to clear the fine road particulates that had accumulated for decades. Metal duct repair in Burlington’s older homes runs $450–$900 depending on linear footage and access difficulty — crawlspace work costs more than basement access.
Air Leak Repair
Those unsealed joints in Burlington’s original systems don’t just leak heated air into attics and crawlspaces — they create negative pressure that pulls dust, insulation particles, and in homes near Route 128, fine road particulates back into your living space. We pressure-test the system, mark every leak with smoke pencil verification, then seal with mastic and mechanical fasteners. Homes near the I-95/Route 128 interchange show a distinct contamination pattern: low-mounted return grilles on split-levels draw elevated fine road particulates that embed in duct board fibers, making standard cleaning ineffective without first sealing the friable surfaces. Air leak repair in Burlington typically ranges $350–$650 for a full system seal.
Flex Duct Repair
The flex duct connecting supply plenums to room registers in Burlington’s 1970s split-levels has often become brittle, collapsed, or chewed by rodents that found their way through unsealed crawlspace penetrations. We replace damaged flex runs with properly sized, insulated flex duct secured with mechanical collars — not the zip-tie specials we sometimes find. Flex duct repair in Burlington runs $200–$400 per run depending on length and access.
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 Burlington
We carry sealants and repair materials from Honeywell and Aprilaire for filtration and humidity-control integrations, and our Abatement Technologies air scrubbers run during every repair job to protect your home’s air quality while we’re working. For sanitizing after repair, we use Guardsman-treated solutions on the restored duct surfaces. We stock common duct repair consumables on the van — mastic, foil tape, mechanical fasteners, flex duct in standard diameters — so most Burlington jobs don’t wait for parts. When we need to order specialty items for older system retrofits, our Boston-based supply house typically delivers next-day to the 01803 and 01805 ZIP codes.
Common Duct Repair & Sealing Problems We See in Burlington Homes
- Fiberglass duct board shedding fibers after 50+ years. The original duct board in Burlington’s 1960s–1970s homes has reached end-of-life — the interior surface degrades, glass fibers enter your airflow, and standard cleaning just stirs up more debris. Mastic sealing or metal replacement is the only real fix.
- Unsealed galvanized joints bleeding air into crawlspaces. Every winter, Burlington homeowners wonder why their furnace runs constantly while the crawlspace stays warm. The answer is usually unsealed metal joints from the original install — we find this in probably 80% of pre-1980 Burlington homes we inspect.
- Low return grilles pulling road particulates near Route 128. Split-levels on Cambridge Street and Winn Street near the interchange show elevated fine particulate loading in returns mounted at grade level. Cleaning alone won’t fix this — the duct board needs sealing first, then the particulates can be fully extracted.
- Collapsed or disconnected flex duct in raised-colonial basements. The original flex runs in Burlington’s raised colonials — common in neighborhoods off Terrace Hall Avenue — sag and separate at the plenum connection after decades of vibration and temperature cycling.
Pricing for Duct Repair & Sealing in Burlington, MA
Here’s what duct repair and sealing costs in Burlington’s market:
| Service | Typical Range |
|---|---|
| Mastic sealant — full system | $350–$650 |
| Air leak repair — targeted sealing | $250–$500 |
| Metal duct repair — per section | $450–$900 |
| Flex duct replacement — per run | $200–$400 |
| Duct board replacement with metal | $800–$1,200 |
What moves you within these ranges: crawlspace access versus basement access (crawlspaces take longer), linear footage of duct involved, and whether we need to cut access panels in finished ceilings. Homes in Burlington’s 01803 and 01805 ZIP codes don’t pay travel surcharges — we’re there regularly. Every estimate is free, and Scott will walk you through exactly what he found and why before any work starts. Call (888) 597-5659 to schedule.
We Also Serve Cities Near Burlington
We repair and seal ductwork throughout the Route 128 corridor, including Pinehurst, Woburn, Wilmington, and Lexington. Each town has its own housing stock quirks — Woburn’s mill-era conversions present different challenges than Burlington’s mid-century ranches — and we adjust our approach accordingly.
Serving Burlington, MA — Our Local Coverage Area
We’re based in the Burlington 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 Burlington
We can often repair degraded fiberglass duct board with mastic sealant if the structural shell is intact and the degradation is surface-level. If the board is crumbling, delaminating, or has been shedding fibers for years, we replace the affected sections with metal duct — a permanent fix that also eliminates the fiber-shedding problem entirely. Scott will inspect and give you a straight answer on which path makes sense for your system. Call (888) 597-5659 for a free evaluation.
Yes — we typically see 20–30% reduction in heating and cooling costs after comprehensive mastic sealing in Burlington’s unsealed 1960s–1970s systems. The payback period is usually 2–4 winters depending on fuel costs and how leaky your system was to start. One Cambridge Street customer tracked her oil usage and saw a 27% drop the first winter after we sealed her galvanized trunk lines.
It can be. Low-mounted returns in split-levels near the I-95/Route 128 interchange pull in elevated fine road particulates that standard filters don’t catch. We’ve found these homes have a distinct contamination pattern — the particulates embed in old duct board fibers and keep recirculating. We address this by sealing the duct board first, then extracting the embedded debris with our Nikro HEPA vac system. Call (888) 597-5659 and we’ll check your specific setup.
We apply industrial-grade mastic sealant for permanent joint sealing, use Rotobrush brush-system technology and Nikro HEPA vacuums for pre- and post-repair cleaning, and run Abatement Technologies air scrubbers during the work to protect your indoor air quality. For integrated filtration and humidity control, we work with Honeywell and Aprilaire components. Guardsman-treated solutions handle post-repair sanitizing.
Yes — flex duct replacement is one of our most common repairs in Burlington’s 1970s split-levels, where original flex runs have hardened, collapsed, or disconnected at the plenum. We replace with properly sized, insulated flex duct secured with mechanical collars, not tape. Typical cost is $200–$400 per run depending on length and whether we need to access it through a finished basement ceiling. Call (888) 597-5659 for an exact quote — estimates are free.
Written by Scott Gray, Owner at Everest Air Duct Cleaning Service Massachusetts, serving Burlington since 2013.