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 Air Duct Repair Across Randolph Town
Air duct repair in Randolph Town, MA typically runs $350 – $1,150 for most jobs, with full duct replacement in a standard ranch or split-level ranging $3,200 – $6,800. We get the call most often from homeowners in Randolph Town whose 1960s-era galvanized ducts are pushing grit into the living space or leaking conditioned air into walls and subfloors. If you need a straight answer about what’s wrong and what it costs to fix, call (980) 447-2498. We’re the Air Duct Repair team that actually works on ductwork, not just around it.
Randolph Town’s housing stock has a specific problem most generic duct companies don’t talk about, and it shapes nearly every repair we do here. More on that below.
Why Linden Air Duct Cleaning Is Randolph Town’s Preferred Air Duct Repair Company
Homeowners in Randolph Town call us because the math is simple: the town’s original ductwork is now 50 to 60 years old, and age does things to galvanized sheet metal that a furnace filter can’t undo. We’ve repaired corroded trunk lines off North Main Street, replaced collapsed flex-duct runs added to raised ranches near Randolph Center, and sealed leaking joints in split-levels along Route 28. The work is familiar to us because the housing stock is familiar to us.
Marcus Veale leads our repair crew, and he’s the one who insists on showing every Randolph Town homeowner exactly what the camera sees inside their ducts before we touch a single joint. No guessing. No “trust us” hand-waving. You see the failed section, you see the quote, and the work happens only after you approve it in writing. Our technicians are background-checked and identity-verified under the Threshold Standard. Before we arrive, you get the tech’s name and photo. At your door, they show a photo ID badge. Every time. No exceptions.
Randolph Town customers also get the 365-Day Done Right Promise on every repair we complete. If a covered repair doesn’t hold, we come back and make it right at no charge. That’s not a courtesy. It’s in writing on the job sheet you sign before we start.
Ductwork Repair in Randolph Town
Ductwork Repair in Randolph Town usually means one of three things: sealing a joint that’s come apart at a reducer or elbow, patching a section of trunk line that’s rusted through, or replacing a flex-duct extension that’s collapsed or grown mold from summer condensation. Homes built in the 1960s and early 1970s in Randolph Town used sheet-metal trunk-and-branch systems, and those systems are now at the age where joints fail predictably. A typical joint seal or small patch runs $350 – $650. Replacing a failed flex-duct run runs $500 – $1,150 depending on length and access.
Oil-Era Soot and Rust Scale
Randolph’s original homes were built around oil-fired warm-air furnaces. That matters because oil combustion leaves a heavy, sticky soot inside ductwork that gas heat never produces. When a homeowner later converts to gas or a heat pump without replacing the ducts, that oil-era residue stays in place – and it bonds with rust scale from aging galvanized metal. What comes out of the registers isn’t harmless dust. It’s black, gritty, and it keeps coming back until the duct interior is mechanically agitated and extracted.
Subfloor-Buried Supply Runs
In many raised ranches around Randolph Center and South Main Street, supply ducts were installed at or below the subfloor line when the house was built. Moisture from the ground below wicks into the duct exterior, and the joints rust from the outside in. A homeowner only notices when registers start blowing rust flakes. Repairing these sections requires cutting an access point, often behind a basement utility wall, because the original builders never left one.
Duct Replacement in Randolph Town
Duct Replacement in Randolph Town becomes necessary when the galvanized trunk or branch runs are beyond patching – usually meaning corrosion covers more than 40 to 50 percent of the duct surface, or the metal has become so thin that any attempt to seal a joint just creates a new tear nearby. Full replacement in a standard 1,200 to 1,800 square foot ranch or split-level around Route 28 typically runs $3,200 – $6,800. The range depends on whether the existing duct runs are accessible from a basement, whether we’re matching the old trunk-and-branch layout or rerouting for better airflow, and how much of the work is in finished spaces.
When to Repair vs. Replace
We tell Randolph Town homeowners the truth: if the duct has one or two failed joints but the rest of the metal is sound, repair is the right call and it’s cheaper. If the trunk line is rusting in multiple locations, or if the ducts were undersized for the house even when new, replacement is cheaper over ten years than chasing one patch after another. We’ll show you the interior condition with a camera before you decide.
Undersized Runs from the Oil Era
A lot of 1960s Randolph ductwork was sized for oil furnaces that ran hotter and moved air differently than today’s gas furnaces or heat pumps. When the heating system changed, the ducts didn’t. Homeowners feel the result as weak airflow in second-floor bedrooms or as certain rooms that never quite reach the thermostat setting. Replacing an undersized trunk or adding a properly sized branch may be the actual fix, not another furnace adjustment.
Trusted Brands We Service in Randolph Town
We work on every major brand of ductwork and air handling equipment, and we stock common replacement parts for the systems most common in Randolph Town so repairs don’t stall waiting on a parts order. Our extraction and agitation equipment comes from Nikro, and for air-quality components we install or service products from Honeywell, Aprilaire, and Abatement Technologies. If your system has a specific filter cabinet, UV light, or media housing from one of these manufacturers, we’re already familiar with it and can usually service it the same day we’re there.
Common Air Duct Repair Problems We See in Randolph Town Homes
- Corroded galvanized joints shedding black grit. The 1960s trunk-and-branch systems in Randolph Town were built with slip-and-drive connections that rust from the inside once oil soot holds moisture against the metal. The result is black scale blowing from registers, often misdiagnosed as a furnace problem.
- Flex-duct extensions sweating through humid summers. Randolph sits in eastern Norfolk County’s humid continental zone. When air conditioning runs in July and August, poorly insulated flex ducts added to older systems condense moisture on the outside, which feeds mold at reducers and drips onto ceilings.
- Ground-moisture intrusion in subfloor duct runs. Raised ranches around Randolph Center and South Main Street often have supply ducts buried at the subfloor line. Ground moisture rusts those sections from the outside in, and the failure stays hidden until a camera inspection probes behind a utility wall.
- Wood-stove particulate overloading older duct systems. Homes on the more open lots toward the town’s rural edges often run wood stoves for supplemental heat. Fine wood ash and creosote dust get pulled into the return side of aging ducts and bond with the existing oil-era soot, making standard cleaning inadequate until the interior is mechanically agitated.
Pricing for Air Duct Repair in Randolph Town, MA
Here are the numbers we quote to Randolph Town homeowners, in writing, before any work starts. Joint sealing or small patching runs $350 – $650. Replacing a short flex-duct run runs $500 – $800. A longer flex-duct run or a section of trunk line in a difficult access area runs $800 – $1,150. Full duct replacement in a typical 1960s or 1970s Randolph Town home runs $3,200 – $6,800. The price we put in writing is the price you pay. There’s no per-vent add-on, no materials surprise, and no invoice at the end that looks different from the quote at the beginning. Call (980) 447-2498 for a free estimate, and we’ll put numbers on paper before you commit to anything.
We Also Serve Cities Near Randolph Town
Our crews cover the communities around Randolph Town and beyond. In addition to our work in Randolph Town, we serve homeowners in Boston, Worcester, Cambridge, and Lowell. If you’re in one of these areas and need a repair quote, the same written pricing and the same 365-Day Done Right Promise apply.
Serving Randolph Town, MA - Our Local Coverage Area
We’re based in the Randolph 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 Air Duct Repair in Randolph Town
Every 3 to 4 years is realistic for a Randolph Town home that burns wood for supplemental heat and sits near unpaved roads or open land. Wood stoves push fine ash and creosote dust into the return side of the system, and unpaved-road dust adds a layer of fine particulate that a standard filter doesn’t catch. If the home also has original 1960s galvanized ducts with oil-era soot already bonded inside, the interval shortens to every 2 to 3 years until that old residue is mechanically removed. Call (980) 447-2498 to schedule an inspection and get an interval based on what’s actually inside your ducts.
Usually they can be cleaned, but the cleaning has to be aggressive enough to break up bonded oil soot and rust scale, not just vacuum loose dust. We run mechanical agitation tools through the original trunk-and-branch runs, then extract everything under negative pressure with HEPA filtration. The answer to “clean or replace” depends on what the camera shows: if the metal is still structurally sound, cleaning and joint sealing is the right call. If the trunk has thinned from rust or the system is undersized for the current furnace or heat pump, replacement may honestly be the better long-term investment. Call (980) 447-2498 and we’ll show you the footage before you decide.
Because the supply runs are buried at or below the subfloor line, and the access points were never installed. A standard cleaning can only reach what it can see from the register and the furnace plenum. The buried middle section stays untouched, and that’s where ground moisture has been rusting the duct from the outside in. In our experience, those hidden runs are the source of the grit and rust flakes that keep coming back. We probe for and cut access behind basement utility walls in Randolph Center and South Main Street homes to reach those sections. Call (980) 447-2498 for an inspection if your registers keep blowing grit after a cleaning.
We start with a camera inspection to confirm where the failure is and what the surrounding metal looks like. Then we cut an access point if one doesn’t already exist, remove the failed joint section, and inspect the trunk on both sides for thinning or additional corrosion. We agitate the accessible interior to break up loose soot and scale, extract everything under negative pressure with HEPA filtration, install the replacement section, and seal the joint with mastic and aluminum tape. You get before-and-after photos of your own ducts, and the repair is covered by the 365-Day Done Right Promise. Call (980) 447-2498 for a written quote.
They often do. If a Randolph Town property has a workshop, barn, or other outbuilding with its own ducted heating or cooling, that system is exposed to a different dust load – wood shavings, soil dust, tractor exhaust – and it doesn’t have the same conditioned air envelope as the house. We inspect outbuilding systems separately from the main house and usually recommend servicing them on the same aggressive-interval schedule as a wood-stove home, every 2 to 4 years depending on use. The same written pricing and guarantee apply to outbuildings as to the main house. Call (980) 447-2498 to schedule an inspection of both systems.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Randolph Town and surrounding communities. If your ducts are old, leaking, or blowing grit, call (980) 447-2498 for a straight answer and a written price.