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 HVAC Cleaning Across Waltham
HVAC cleaning in Waltham means dealing with systems that were rarely installed the way they should have been. Most homes here predate forced air entirely. When central AC and furnaces went in, installers threaded flex duct through wall cavities and dropped ceilings that were never designed to carry air. That’s the job we do every week. If you live in a triple-decker off Moody Street or a condo in the old Watch Factory complex, call (806) 606-6902 for a written price before anyone touches a panel.
We’ve worked in Waltham long enough to know what lives inside these systems. Disconnected runs. Condensation-soaked flex. Coils coated with a film that regrows months after a standard clean. The camera tells us, and we show you the photos. We’re part of the HVAC Cleaning team at CleanRun Air Duct Cleaning, and we service Waltham on a regular schedule. Dispatch runs from our Boston office. The crews, the equipment, and the written warranty all show up at your door in Waltham.
Why CleanRun Air Duct Cleaning Is Waltham’s Preferred HVAC Cleaning Company
We built our reputation in Waltham on showing people what’s actually inside their ductwork before we touch it. Homeowners here do their research. They want evidence. So we hand over a written price, a documented photo record of every run, and a 365-Day Done Right Promise in writing on every job. Tomas Reyes, who leads CleanRun, made that the standard from day one back in 2013, and it hasn’t changed. More than 52,000 homes served, every single one with a written price before work started.
Waltham customers call us because we name our equipment. Rotobrush and Nikro for negative-pressure extraction. Abatement Technologies HEPA filtration when we’re cleaning a blower or an evaporator coil with visible biofilm. We don’t ask you to trust a brand name on a truck. We tell you what’s going into your ducts and what it’s rated to do. No decorative badges. No urgency theater. Just a crew in uniform, names on the work order, and a scope of work in writing before the first register comes off.
Response time to Waltham is straightforward: we schedule by neighborhood, and most appointments in the Moody Street area, Warrendale, Cedarwood, and the South Side get a three-to-five-day window. We don’t promise same-day service, because we’re not a shop-vac operation racing from driveway to driveway. We schedule the time the job actually requires, and we show up when we say we will.
Our HVAC Cleaning Services in Waltham
Evaporator Coil Cleaning
The evaporator coil is the cold surface inside your air handler. In Waltham’s older retrofit systems, especially in triple-deckers near the Charles River, this coil runs wet for weeks at a stretch during summer. The persistent humidity in lower-elevation neighborhoods means biofilm builds up faster than it does a few miles west in Weston. We clean the coil, treat it to slow regrowth, and photograph the before and after. A typical evaporator coil cleaning in Waltham runs $180-$320 depending on access.
Blower Cleaning
Your blower wheel is what pushes air through the system. When Waltham homes accumulate dust from long flex runs and disconnected returns, the blower gets caked. That reduces airflow and forces the system to work harder. We pull the blower assembly, clean the wheel and housing, and check the motor amperage at the same time. Blower cleaning in Waltham typically runs $150-$280. If the motor is failing, we write that up separately with a photo and a price.
Condenser Cleaning
The condenser sits outside, and in Waltham it collects a specific kind of debris: cottonwood fiber from the trees along the Charles River, plus fine grit from older masonry that sheds constantly. We clean the coil fins, clear the interior, and check refrigerant pressures if the system is short-cycling. A condenser cleaning in Waltham runs $120-$200 for a standard residential unit. We don’t upsell refrigerant without showing you the gauge reading and the leak check result.
Air Handler Cleaning
This is the one Waltham’s retrofit systems need most. The air handler contains the blower, the evaporator coil, and often the filter rack. When flex duct sags and condensation pools, the interior of the air handler becomes a moisture trap. We clean the entire interior cabinet, the coil, the blower, and the drain pan, then treat the coil surface so biofilm doesn’t regrow within a season. Air handler cleaning in Waltham runs $280-$450 for a typical residential unit, depending on cabinet access and how much of the system is reachable without cutting drywall.
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.
BeforeAfterTrusted Brands We Service in Waltham
We clean and service all major residential HVAC brands, and we stock the consumables Waltham systems need most: filter media, coil treatment, pan tablets, and duct sealing products. If you have a Carrier, Trane, Lennox, Rheem, or Mitsubishi system, we know the access points and the failure patterns. We use Guardsman coil treatment and Aprilaire filtration components where the system calls for them because we can show you the manufacturer’s spec sheet before we put anything in your ductwork. Our equipment roster includes Rotobrush, Nikro, and Abatement Technologies, and we’re happy to tell you which tool does which job and why.
Common HVAC Cleaning Problems We See in Waltham Homes
- Sagging flex duct in crawlspaces and dropped ceilings. Long, poorly-supported runs in pre-1940 multi-family homes collect condensation at the low points. That pooled moisture feeds mold that gets pushed into supply registers every time the fan runs.
- Disconnected return runs. We’ve pulled cameras through Waltham retrofits where a return duct had separated inside a wall cavity, pulling unfiltered air from the stud bay. Sealing that gap is the real fix; cleaning without sealing just repeats the problem.
- Biofilm on evaporator coils. The Charles River valley humidity means coils in Waltham don’t dry out between cycles the way they do in upland communities. A standard clean without coil treatment leaves a film that regrows within months.
- Construction dust in mill-conversion condos. The Watch Factory and similar conversions along the river were gut-renovated with heavy masonry dust, and the uninsulated brick cavity duct runs trap it. Deep industrial dust requires HEPA extraction, not a standard residential cleaning.
Pricing for HVAC Cleaning in Waltham, MA
We write a flat price per system before any work starts, and it covers the entire job, not a per-vent line item that balloons once we’re in the driveway. A full HVAC cleaning in Waltham, which includes the air handler, evaporator coil, blower, and accessible supply and return runs, typically runs $480-$750 for a single-system home. Condo units in mill conversions run $350-$550, depending on access. If we find disconnected runs, crushed flex, or coil biofilm, we photograph it and write a separate line-item price for the repair or treatment before we do anything. You approve it first. Estimates are free. Call (806) 606-6902 and we’ll send a written price to your email before scheduling the crew.
We Also Serve Cities Near Waltham
Our crews cover Waltham and the surrounding towns out of the same scheduling desk, so turnaround to your neighborhood doesn’t depend on which city you’re in. We also provide HVAC Cleaning in Waltham as part of the same local operation, and we regularly work in Belmont, Watertown, Lexington, and Newton. Same written price, same photo record, same 365-Day Done Right Promise. If you’re just over the line in Watertown or up in Lexington, the process is identical.
Serving Waltham, MA - Our Local Coverage Area
We’re based in the Waltham 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 - HVAC Cleaning in Waltham
Because the ductwork itself is usually the problem, not just the dust inside it. Waltham’s triple-deckers were built for radiators, and the forced-air retrofits threaded through them often sag, disconnect, or trap condensation in spaces that never see daylight. A basic clean that only vacuums the runs will miss the disconnected return behind a dropped ceiling or the soaked flex in a crawlspace. That’s why we run a camera through the system before source removal, and that’s why we photograph what we find. Call (806) 606-6902 to schedule an inspection with a written price.
The duct runs in these buildings are often uninsulated and run through original brick cavity walls, which means condensation forms on the outside of the duct in summer and inside the duct in winter. Add construction dust from the gut renovation and you get a biofilm paste that standard cleaning won’t fully remove. We use HEPA filtration and coil treatment on these jobs, and we document the interior of every run so you can see what was actually removed. The price reflects the extra work: $350-$550 for a typical mill-conversion condo.
Yes, if your air handler was not included in the previous job. The air handler contains the blower and evaporator coil, which are usually the dirtiest and dampest parts of the system. Cleaning the ducts while leaving a biofilm-coated coil means the system recontaminates the runs within months. In Waltham’s humidity, this is especially common. Call (806) 606-6902 and ask for a camera inspection of the air handler before you book anything.
For pre-1940 Waltham homes with retrofit flex duct, we recommend an annual camera inspection and a full HVAC cleaning every two to three years. The long, sagging runs collect debris faster than the rigid, purpose-built ducts in newer homes. If you have a mill-conversion condo or a system with uninsulated runs, every two years is the safer interval. Our photo record from the previous visit makes the comparison straightforward.
It usually does, but only if the source is addressed. The musty smell comes from moisture, and in Waltham’s retrofit systems that moisture is usually trapped in a sagging flex run or pooled in a drain pan. Cleaning removes the mold and biofilm, but if the condensation trap remains, the smell returns. We identify the source during the camera inspection, quote the cleaning and the repair separately in writing, and back it with the 365-Day Done Right Promise. Call (806) 606-6902 for a free estimate and a written scope of work.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving Waltham under the H.A.V.E.N. Standard since 2013.