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 South Boston
HVAC cleaning in South Boston costs between $425 and $1,100 for a full system clean, with most condo and rowhouse jobs landing between $550 and $800 depending on system size, number of duct runs, and whether the coil needs treatment. That price is written down before a single panel comes off, under Haven Standard Clause 1. If you’re in South Boston and your registers have visible dust, your air smells musty, or your heating bill’s been climbing, call (806) 606-6902 and we’ll give you a real number, not a teaser rate.
We know the housing stock here because we’ve worked inside it. Triple-deckers off Broadway, brick rowhouses near Medal of Honor Park, condo conversions along Telegraph Hill. CleanRun has documented the inside of thousands of South Boston duct runs since 2013, and the pattern is consistent: retrofit systems packed into spaces never meant for ductwork, accumulating debris faster than anything purpose-built.
Key Takeaways
- Written pricing before work starts on every South Boston job, no exceptions.
- Documented photo record of every duct run, before and after, included as standard.
- South Boston’s retrofit ductwork needs physical source removal, not just fogging treatments.
- Our 365-Day Done Right Promise applies to every HVAC cleaning we complete in South Boston.
Why CleanRun Air Duct Cleaning Is South Boston’s Preferred HVAC Cleaning Company
We’re independently owned and operated under the Haven Standard, established in 2013. We don’t run a franchise playbook. What we do run: background-checked, uniformed technicians who operate under the H.A.V.E.N. Standard with their license number published on the page, not buried in a footer. When you book an HVAC Cleaning job in South Boston, you’ll know the name of the technician before they arrive.
The 365-Day Done Right Promise is the reason South Boston homeowners keep calling us back. It is not a slogan. It’s a written guarantee that if the work isn’t right, we make it right, no manager approval required. That promise sits on every invoice, alongside the documented photo record showing what your ducts looked like when we started and what they looked like when we finished.
Our crews coordinate from the brand’s Boston office, which means South Boston appointments are scheduled by people who actually know the neighborhood. No call-center scripts. No “your technician is en route” texts from a dispatch hub three states away. And if you bring us a competitor’s written estimate, we’ll put our number next to it in writing, free of charge.
BeforeAfterOur HVAC Cleaning Services in South Boston
Every system we service in South Boston gets the same starting point: a camera inspection of every accessible duct run before any cleaning begins. That’s the difference between cleaning a system and documenting a system. Here’s what the core services look like in practice.
Evaporator Coil Cleaning
Your evaporator coil sits inside the air handler, performing the actual heat exchange that cools or heats the air moving through your home. In South Boston’s coastal humidity, that coil runs wet for months at a time. Salt-laden moisture settles on the fins, dust sticks to the moisture, and before long you’re running a system that’s working against a layer of grime instead of moving air freely. A typical evaporator coil cleaning in South Boston runs $175 to $350. We use professional-grade equipment from manufacturers like Abatement Technologies to pull the coil clean and restore proper airflow, then verify the result with a pressure reading.
Blower Cleaning
The blower is the fan that pushes air through your entire duct system. When it’s caked in dust, it moves less air per rotation, which means your system runs longer to hit the same temperature. In retrofit systems, where duct runs are already restricted by sharp turns and narrow chases through floor joists, a dirty blower compounds an existing problem. Blower cleaning in South Boston typically costs $125 to $275, depending on access. We remove the blower housing, clean the wheel, and run it under load to confirm it’s moving air at spec.
Condenser Cleaning
The condenser is the outdoor unit, and in South Boston it lives in some of the most punishing conditions the city can offer. Boston Harbor salt spray, winter road salt mist, and the general coastal grime that accumulates on anything left outside near the water. A condenser with clogged fins can’t reject heat properly, which forces the compressor to work harder and fail sooner. Condenser cleaning here runs $140 to $300, including fin combing and coil treatment when needed. We service all major residential brands and will tell you honestly if a unit is beyond the point where cleaning helps.
Air Handler Cleaning
Air handler cleaning is the most overlooked part of HVAC maintenance in South Boston, and in this housing stock it’s also the most important. Your air handler contains the blower, the evaporator coil, and often the filter housing. When it’s dirty, every cubic foot of air moving through your home passes through that dirt first. A proper air handler cleaning in South Boston runs $275 to $500 and includes the blower, coil, housing interior, and condensate pan. What it does not include is a fogging “sanitizer” upsell that does nothing but scent the air. We remove the source material. That’s the job.
Heat Exchanger Cleaning
If your South Boston home has a furnace as part of the HVAC system, the heat exchanger needs attention too. Soot, dust, and debris on the exchanger surface reduce efficiency and can accelerate corrosion. Heat exchanger cleaning runs $150 to $300 in this market, and we’ll tell you during inspection if we see signs of cracking or concern that warrants a separate HVAC contractor visit. We don’t touch what we can’t safely service.
Coil Treatment
Coil treatment is an EPA-registered antimicrobial application applied to the evaporator coil after cleaning. It inhibits microbial regrowth on the coil surface, which is where South Boston’s humidity problem starts. Coil treatment adds $85 to $175 depending on coil size. It’s worth doing. It’s not a substitute for coil cleaning, and anyone selling it as a substitute is selling you a story.
What happens when you call
- 1
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 South Boston
We service systems from Honeywell, Aprilaire, and every major residential HVAC manufacturer installed in South Boston homes. That matters because retrofit systems here often mix components from multiple brands, pieced together over years of condo conversions and partial upgrades. If your air handler is from one manufacturer, your controls from another, and your filtration from a third, we’ll identify each component during inspection and tell you exactly what we’re cleaning and why. Our equipment roster includes Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman, so the tools we use are the kind you can look up before agreeing to a price.
Common HVAC Cleaning Problems We See in South Boston Homes
- Debris packed behind sharp bends. Retrofit duct runs through floor joists and wall chases have turns that original ductwork never would. At the first elbow past the register, the duct often narrows and bends hard. That’s where dust, salt, and lint lock together into a crust that a quick vacuum pass at the register will never reach. We camera every run before and after, so you see exactly what was removed.
- Mold in the return side of converted triple-deckers. When a triple-decker gets converted into condos, each floor often gets its own improvised duct system. The return side frequently runs through uninsulated rim-joist cavities above a sweating basement slab. Cold surfaces, moisture intrusion, and no airflow buffer equal visible mold colonization within two heating seasons. Up at East Broadway, we see it on nearly every conversion that didn’t get duct replacement during the flip.
- Salt residue inside ductwork near the harbor. Homes within a few blocks of Boston Harbor pull salt-laden air into the building envelope year-round. That salt settles on the interior walls of ducts and acts like a glue for any dust passing through. Ductwork near Reserved Channel and along the waterfront needs source removal more frequently than inland systems, period.
- Condensation at the rim joist. Boston’s cold, wet winters create condensation risk inside the retrofitted duct systems common in South Boston’s older stock. When flex duct runs through an uninsulated cavity, the cold exterior surface meets warm interior air inside the duct and water forms. That water feeds whatever organic material already accumulated in the run. It’s a materials problem, and cleaning is the first step, not the whole fix.
Pricing for HVAC Cleaning in South Boston, MA
Here’s what you can expect to pay for HVAC cleaning in South Boston, with no “call for pricing” games. A full HVAC system clean, including evaporator coil, blower, and accessible duct runs, runs $425 to $1,100. The variables are honest ones: how many registers you have, whether we’re cleaning one system or three improvised ones in a converted triple-decker, and whether your coil needs EPA-registered treatment. Most single-system jobs in South Boston land at $550 to $800.
| Service | Typical South Boston Range |
|---|---|
| Evaporator Coil Cleaning | $175-$350 |
| Blower Cleaning | $125-$275 |
| Condenser Cleaning | $140-$300 |
| Air Handler Cleaning | $275-$500 |
| Heat Exchanger Cleaning | $150-$300 |
| Coil Treatment (EPA-registered) | $85-$175 |
The number we write down is the number you pay. If we get inside and find the job is bigger than the written price, that’s our problem to solve, not your bill to absorb. Bring us any competitor’s written estimate and we’ll put our number next to it in writing. Free second opinion, every time.
We Also Serve Cities Near South Boston
While this page focuses on HVAC Cleaning in South Boston, our teams also work throughout the metro region. If you’re in Boston, Worcester, Springfield, or Lowell, the same written pricing, documented photo record, and 365-Day Done Right Promise apply. One call handles scheduling for any of those locations: (806) 606-6902.
Serving South Boston, MA - Our Local Coverage Area
We’re based in the South Boston 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 South Boston
Because most South Boston condos were retrofitted for central HVAC, and the duct runs are squeezed into spaces never designed for them. The return side often runs through uninsulated rim-joist cavities above damp basement slabs, where cold surfaces meet warm air and create condensation. If a cleaning only addresses the first few feet of duct near the register without physical source removal, the biofilm left behind recolonizes within months. A proper clean removes the material, not just the moisture. Call (806) 606-6902 and ask us to camera your return side before quoting, so you’re looking at the actual condition when we hand you a number.
Generally, no. A fogging sanitizer introduces a chemical mist into the ductwork without physically removing the biofilm it’s meant to treat. In South Boston’s salt-air and cold-surface-condensation environment, any microbial growth left behind will regrow quickly once the fog dissipates. The genuine fix is physical source removal under negative pressure with HEPA filtration, followed by EPA-registered coil treatment on the evaporator coil where moisture and organic material actually collect. We’ll do the real work and skip the upsell. That’s been our practice since the first job in 2013.
Because during the condo-conversion boom, each floor of a South Boston triple-decker frequently got its own independent, improvised duct system. The original building had steam or hot-water radiators and zero ductwork. Each conversion added whatever would fit through that floor’s joists and wall chases, which means one building can have three completely different duct layouts, three different access points, and three different cleaning requirements. We quote each system separately and include all of them in one written price before work starts. This is exactly the kind of job where the documented photo record matters, because a single building visit can involve three entirely different makeshifts, and you deserve to see each one cleaned.
Yes, in the vast majority of South Boston rowhouses we can access the ductwork through existing registers and access panels. The retrofit ducts here are often shallow and tightly bent, but they were installed through accessible chases, not sealed inside finished walls. We use negative-pressure extraction equipment from brands like Rotobrush and Nikro to pull debris through those runs without opening ceilings. If we do encounter a duct that can’t be accessed without cutting, we’ll show you the camera footage and discuss options before any work happens, which is exactly what a written price under Haven Standard Clause 1 is for.
Yes. Homes in South Boston sit on a peninsula flanked by Boston Harbor and the Reserved Channel on three sides, which means salt-laden air enters the building envelope year-round. That salt settles on the interior walls of duct runs and acts like glue, binding any dust or lint passing through into a crust that’s much harder to remove than dry dust. This is a measurable difference between South Boston and inland neighborhoods like Roslindale or Hyde Park, and it’s why we recommend camera verification on the return side specifically. If you want to see what the harbor air has deposited inside your ducts, call (806) 606-6902 for a free estimate with a documented photo record of whatever we find.
What Actually Fixes HVAC Systems in South Boston’s Retrofit Ductwork
South Boston’s triple-deckers and brick rowhouses were built from the 1890s through the 1920s, entirely around steam and hot-water radiator systems. There was no original ductwork anywhere in this housing stock. Every central HVAC system in South Boston is a retrofit, squeezed through floor joists, wall chases, and tight ceiling cavities never designed for it. That produces cramped, irregular duct runs that accumulate debris faster than purpose-built systems, especially in the coastal humidity that defines this peninsula.
Here’s a vignette from a job off East Broadway. We pulled a camera inspection through a supply run in a converted triple-decker and found flex duct snaked through an uninsulated rim-joist cavity, sitting directly above a sweating basement slab. The return side showed visible mold colonization inside the liner within two heating seasons. We ran full source removal under negative pressure with HEPA filtration on both supply and return ducts, then treated the evaporator coil with an EPA-registered coil treatment. We skipped the fogging sanitizer upsell because without removing the biofilm physically, it would have been back by spring. That’s what this page is telling you: what actually fixes these systems, and what’s just noise.
The fog-only approach is the biggest problem in this industry’s South Boston story. A competitor will fog the system, scent the air, and tell you the microbial problem is solved. With salt air and cold-surface condensation, the biofilm returns within months because nothing was removed. The correct sequence is camera inspection, physical source removal, coil cleaning, and then, if warranted, EPA-registered coil treatment. Anything less is a candle in a windstorm.
And on older blocks like K Street, the failure mode is specific: technicians clean only the first few feet of accessible duct near the register, missing the debris packed behind sharp bends and through shallow ceiling chases where coastal humidity has glued dust to the metal. That’s why our documented photo record includes every duct run, not just the ones easiest to photograph. The inside of every run is documented before and after. It’s a standard deliverable, not an add-on.
Tomas Reyes runs the crews that do this work, and the standard he’s enforced since our first South Boston job is blunt: evidence first, no fog-and-run, no per-vent pricing games, and a written price before any panel comes off. That’s the whole point of HVAC Cleaning done under the Haven Standard. If you want a free second opinion on any written estimate, bring it to us. If you want to see what’s inside your ducts, we’ll camera them and show you. Call (806) 606-6902.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving South Boston since 2013.