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 Cleaning Across Belmont
Air duct cleaning in Belmont, MA typically runs $450 – $850 for a full residential system, with most jobs completed in a single day by crews who understand the quirks of local housing stock. We’re familiar with Belmont’s mix of mid-century ranchers off Concord Avenue, two-story traditional homes near Belmont Center, and newer infill around Cushing Square. Our dispatch team coordinates scheduling from our Boston office, and our crews serve Belmont directly, carrying the rotary brush systems and negative-air equipment needed for the crawlspace-based HVAC setups common here. If your registers still push wildfire smoke odor after you’ve swapped the filter, or if your mid-century home’s airflow has dropped off, call (361) 326-5060. We’ll send a uniformed tech with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Belmont’s Preferred Air Duct Cleaning Company
We’ve been part of the Garrison Partners family since 2004, and our Air Duct Cleaning team has built a reputation in Middlesex County on showing up inside the window, pricing in writing, and leaving the site clean. Belmont homeowners aren’t looking for the lowest teaser quote; they’re looking for the crew that won’t turn a $400 phone estimate into an $1,800 invoice at the door.
Our technicians are background-checked and uniformed, and they arrive with professional-grade Rotobrush rotary systems and Nikro negative-air machines, not hardware-store vacuums with a brush attachment. Every job carries our 365-Day Done Right Promise in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule.
Air Duct Inspection in Belmont
Air Duct Inspection in Belmont starts with understanding that most local homes hide their ductwork in crawlspaces or unfinished attics where no homeowner looks regularly. We run a video camera through the supply and return lines to document crushed flex runs, disconnected collars, and the fine ash residue that settles inside flexible duct after wildfire season in the Santa Cruz Mountains. A typical inspection in Belmont costs $150 – $250, and we apply that fee toward your cleaning if you move forward.
What the Camera Reveals in Older Homes
Belmont’s 1940s – 1970s housing stock often shows galvanized steel duct with decades of pitting at the joints, or flex duct that has sagged against roof joists. The camera doesn’t lie: we show you the blockage, the smoke coating, or the disconnected run before we quote any repair. No guessing, no surprises at the door.
Inspection Before and After Cleaning
We inspect before work to build the scope and price, and again after to verify the ducts are clear and sealed. This is standard on every Belmont job, not an upsell. The second pass confirms we didn’t miss a crushed branch or leave debris behind.
Residential Air Duct Cleaning in Belmont
Residential Air Duct Cleaning in Belmont means more than vacuuming registers. Our crews use a Rotobrush rotary brush system to agitate debris from the duct walls while a Nikro negative-air machine pulls it out under controlled suction. For a typical Belmont single-family home, residential cleaning runs $450 – $850 depending on system size, duct material, and whether we find disconnected or damaged runs that need sealing. Homes with original galvanized steel or extensive flex duct replacement needs may run higher.
Source Removal Under Negative Pressure
We seal each register and create negative pressure throughout the system before introducing any agitation tools. This prevents debris from blowing into your living space during cleaning. It’s the NADCA-recommended method, and it’s the only way we work in Belmont crawlspaces where duct runs are tight and awkward.
Sealing What Cleaning Alone Won’t Fix
Surface cleaning doesn’t stop air from leaking through separated joints in galvanized steel or reconnecting a crushed flex run. When our camera finds those failures, we quote sealing with duct mastic or collar repair before we start. The price is written down. It doesn’t move.
Trusted Brands We Service in Belmont
Our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines for the cleaning itself, plus filtration and sealing products from Honeywell, Aprilaire, and Abatement Technologies. We don’t show up with a shop vac and a prayer. For Belmont homeowners dealing with wildfire smoke residue or marine-layer dampness, we stock HEPA filtration and chemical sponge materials that hardware stores don’t carry. That means faster turnaround on jobs where standard cleaning won’t touch the problem. Our technicians can explain what each piece of equipment does and why we’re using it on your system, in plain terms, before we start.
Common Air Duct Cleaning Problems We See in Belmont Homes
- Wildfire smoke residue in flexible duct. After nearby Santa Cruz Mountains fires, fine ash particles coat the interior of flex duct runs in Belmont’s attic spaces. Changing the HVAC filter doesn’t remove this coating; it requires HEPA vacuum extraction and chemical sponge treatment during a full system clean.
- Disconnected or crushed flex runs in mid-century ranchers. The original flex duct installed in 1950s – 1970s Belmont ranchers has sagged, kinked, or pulled free at the collar. Smoke and damp marine air bypass the filter entirely, feeding directly into supply registers until a camera inspection finds the break.
- Pitted galvanized steel with joint separation. Original steel duct in Belmont’s older homes has decades of corrosion at the seams. A surface cleaning won’t stop the leaks; the real fix is sealing the runs after source removal under negative pressure.
- Marine-layer mold and mildew in crawlspace ducts. Belmont’s position between the bay and the hills means cool, moist air settles into crawlspace ductwork during winter fog seasons. Without proper drying and sealing after cleaning, mold returns within a season.
Pricing for Air Duct Cleaning in Belmont, MA
A typical residential air duct cleaning in Belmont runs $450 – $850 for a full system. Here’s how that breaks down:
| Service | Price Range |
|---|---|
| Air duct inspection with video | $150 – $250 (credited toward cleaning) |
| Standard residential cleaning (single system) | $450 – $650 |
| Large home or complex layout | $650 – $850 |
| Duct sealing after cleaning (per system) | $200 – $400 additional |
| Flex duct repair/replacement (per run) | $150 – $350 |
What moves the price: system size, duct material (galvanized steel takes longer than flex), accessibility (crawlspace work adds time), and whether we find damage that needs sealing or repair. We quote one flat price per system, agreed in writing before we touch anything. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Belmont
Our crews work throughout Middlesex County, including Belmont neighbors in Arlington, Cambridge, Newton, and Waltham. Each job follows The Garrison Standard: arrive inside the window, price in writing, complete by the book, leave clean.
Serving Belmont, MA - Our Local Coverage Area
We’re based in the Belmont 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 Cleaning in Belmont
Because the fine ash particles have coated the interior of your flexible duct runs, and standard filters don’t reach that far into the system. On a 1958 two-story traditional off Concord Avenue, our techs hooked a Rotobrush system to the air handler and pulled negative pressure through the supply and return ducts while a camera inspection revealed a crushed flex run feeding the upstairs addition. We ran agitation tools and HEPA filtration to strip the fine ash coating left by the prior wildfire season, then reconnected and sealed the damaged run so the blower motor wasn’t fighting a closed-off branch. Call (361) 326-5060 if you’re still smelling smoke after filter changes.
Usually, yes. Belmont’s 1940s – 1970s homes with original galvanized steel have decades of pitting and joint separation that surface cleaning won’t address. We seal the runs after source removal under negative pressure, with the cost included in your written quote before work starts. Call (361) 326-5060 for an inspection.
The cool, moist air that rolls in from the bay settles into crawlspace and attic ductwork, creating conditions for mold and mildew growth inside flex duct and at steel joints. Cleaning removes existing growth, but without proper sealing and drying, mold returns within a season. Our crews address this with HEPA extraction and mastic sealing on the same visit. Call (361) 326-5060 to schedule.
It means sealing all registers, establishing negative pressure throughout the system with a Nikro machine, then using mechanical agitation (our Rotobrush system) to dislodge debris while suction pulls it out through a contained hose. For Belmont crawlspaces, we also run video inspection before and after to verify we haven’t missed crushed or disconnected runs in tight spaces. Call (361) 326-5060 for a free estimate.
Most flex duct can be cleaned if it’s intact, but we often find sagging, kinking, or collar separation that makes replacement the better fix. Our camera inspection shows you the condition before we quote either option. Cleaning runs $450 – $850; replacement of damaged runs adds $150 – $350 per section. Call (361) 326-5060 and we’ll give you a straight answer on what your attic duct actually needs.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Belmont and Middlesex County since 2004.