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 Malden
We seal ducts in Malden’s triple-deckers, two-families, and converted capes where the real problem isn’t always the ducts you can see. In neighborhoods like Edgeworth and Maplewood, crews from our Boston office drive to Malden daily, and we schedule around the parking restrictions and multi-unit coordination that dense, older cities demand. If you’re in Malden and your registers blow dust every time the heat kicks on, or your second-floor tenant complains about uneven temperatures, call us at (361) 326-5060. We’ll give you a written price before any work starts, and every seal is covered by our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is Malden’s Preferred Duct Sealing Company
We’ve been working in Malden long enough to know that a “standard” duct sealing job doesn’t exist here. The city’s housing stock, built overwhelmingly between 1890 and 1930, was never designed for forced-air HVAC. Our technicians arrive uniformed and background-checked, and we price every job in writing before we touch anything. That’s The Garrison Standard, and it’s how we operate whether we’re sealing ducts in a Maplewood two-family or an Edgeworth triple-decker.
Our Boston office dispatches crews to Malden daily, so we’re not guessing about local conditions. We know which streets have resident-only parking, which basements flood in spring, and which buildings still run converted gravity-furnace ductwork through original coal chutes. That local knowledge saves time and prevents the callbacks that happen when an out-of-town crew seals the visible ducts but misses the real leak paths.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No waiting until Monday to schedule.
Air Duct Sealing in Malden
Air Duct Sealing in Malden means closing the gaps, cracks, and failed joints in ductwork that was often installed decades after these homes were built. In a typical Malden two- or three-family, we find supply ducts leaking into unheated basements, return paths pulling in coal ash from old chutes, and connections that have worked loose as galvanized metal expands and contracts through New England’s temperature swings. A full Air Duct Sealing job in Malden typically runs $850 – $1,800 for a single-family or one unit in a multi-family building, with whole-building jobs in triple-deckers ranging $2,200 – $4,500 depending on access and the condition of the original ductwork.
Sealing Around Converted Coal Chutes
In Edgeworth and Maplewood, 1950s forced-air retrofits frequently reused the original coal chutes as return-air plenums. We seal the perimeter of these chutes with mastic rated for HVAC use, then verify with a pressure test that the seal holds under operating conditions. Skip this step and you’re still pulling a century of coal ash into the living space.
Multi-Unit Coordination
Many Malden buildings have one heating system serving multiple units. We coordinate with all parties before we arrive, schedule access to shared basement spaces, and document what was sealed in each unit so there’s no confusion about who got what.
Duct Sealing Services in Malden
Duct Sealing Services in Malden cover more than the metal you see in the basement. We pressure-test the entire system, identify leakage points with smoke pencils and thermal imaging, then seal with mastic or foil-backed tape depending on the application. Our Duct Sealing team uses Rotobrush rotary systems for pre-cleaning when ducts are coated with debris, and we finish with a post-seal pressure test so you have written proof of the improvement. For a typical Malden single-family with basement ductwork, Duct Sealing Services run $850 – $1,400; larger two-families and triple-deckers with complex runs fall in the $1,800 – $4,500 range.
Dryer Vent Sealing in Shared Stacks
In Malden’s denser apartment buildings, dryer vents often share a common chase. We seal the duct joints within these stacks to prevent lint backup and moisture intrusion between units. This requires coordinating access with multiple tenants, which we handle during scheduling.
Return Path Verification
Many Malden homes rely on open stairwells for return air rather than dedicated ducts. Before we seal supply leaks, we verify that closing those leaks won’t create backdrafting or pressure imbalances. It’s a step that matters in older housing where the original design didn’t include modern HVAC.
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 Malden
We seal and service ductwork connected to equipment from Honeywell, Aprilaire, and Abatement Technologies, and we stock filtration products from Guardsman for Malden customers who want to upgrade while we’re on site. Our crews carry Rotobrush rotary brush systems and Nikro negative-air machines, the same tools used in commercial buildings, because Malden’s older ducts need more than hardware-store equipment. Parts for common systems are available through our Boston office, so most follow-up work doesn’t require a second supply run.
Common Duct Sealing Problems We See in Malden Homes
- Coal-chute return plenums pulling debris. In Edgeworth and Maplewood, the original gravity-furnace ductwork was converted to forced-air in the 1950s using old coal chutes as return-air paths. These chutes trap a century of coal ash that blows into living spaces every time the blower runs.
- Undersized galvanized ducts in unheated basements. Malden’s pre-1950 housing stock often has uninsulated metal ductwork snaking through damp, cold basement spaces. The metal corrodes at the joints, and the temperature differential makes expansion cracks worse.
- Open stairwells used as return paths. Many two- and three-family homes were never built with dedicated return ducts. Sealing supply leaks without accounting for this can create pressure imbalances that pull basement air, mold spores, and road salt dust into upstairs units.
- Shared dryer vent chases in multi-family buildings. Stacked apartments often vent through a common chase with failed seals between floors. Lint and moisture migrate between units, and the restricted access means these leaks get ignored until there’s a blockage or mold issue.
Pricing for Duct Sealing in Malden, MA
Duct sealing in Malden costs $850 – $1,800 for most single-family and one-unit jobs, with whole-building work in triple-deckers and larger two-families running $2,200 – $4,500. What moves the price: how many access cuts we need to reach buried ductwork, whether the old coal-chute plenum requires special sealing, and whether we’re coordinating access across multiple units. We give you one flat price per system, agreed in writing before we start. No per-vent pricing. No add-ons at the door. Estimates are free, and we show you before-and-after photos of your own ducts so you know what was done. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Malden
Our crews work throughout the metro area, and we regularly schedule Duct Sealing in Malden alongside jobs in Everett, Melrose, Medford, and Chelsea. The same written pricing, same 365-Day Done Right Promise, same background-checked technicians at every stop.
Serving Malden, MA - Our Local Coverage Area
We’re based in the Malden 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 Malden
Yes, we do this regularly. We coordinate access with all tenants, seal the shared basement trunk and individual unit branches, and document what work was performed in each space. Call (361) 326-5060 to discuss scheduling for your building.
The 1950s forced-air retrofits in Edgeworth often reused original coal chutes as return-air plenums, so standard sealing of visible supply and return ducts misses the main debris path. We clean and seal around these chutes specifically, then pressure-test to confirm the seal holds.
We schedule around resident parking restrictions and request basement access in advance. Our Boston office dispatches crews familiar with Malden’s street layout, so we arrive inside the quoted window with the right equipment for older buildings with tight access.
Sealing alone doesn’t remove existing debris, but it stops your system from pulling in new road salt dust, pollen, and basement mold spores through leak points. We often combine sealing with rotary brush cleaning so you’re not trapping old contaminants inside newly sealed ducts.
Yes, especially in buildings where lint and moisture migrate between units through failed chase seals. We coordinate with multiple tenants, seal the joints within the shared stack, and verify proper exhaust flow. This prevents blockages and reduces fire risk in buildings where access is normally restricted.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Malden and surrounding communities since 2004.