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
AfterAir Duct Cleaning Company in Waltham, MA
Most Waltham homes need whole-system duct cleaning every three to five years, with typical jobs running $350 – $650 for a standard single-family system. We’re Hollis Air Duct Cleaning, and our Waltham crews are dispatched from our Boston office to handle the unusual mix of mill-era galvanized ductwork, triple-decker retrofits, and post-war ranches that define this city’s housing stock. Call us at (361) 326-5060 for a free written estimate.
Why Waltham Homes Are Different
Waltham is one of the oldest continuous industrial cities in the U.S., and that history lives inside its walls. On the South Side and near the Charles River, we regularly find pre-1930 mill-era and early streetcar-suburb homes with original galvanized or early sheet-metal ductwork that was never fully lined. The recurring job here isn’t just removing dust. We’re managing legacy duct systems that shed rust flakes and trap decades-old combustion byproducts from earlier oil and coal heating systems.
The housing mix is equally varied: dense triple-deckers and mill-worker housing from the late 1800s, early 1900s streetcar suburbs around Moody Street, and post-WWII ranches and capes on the north side. Many older units still run hard-ducted systems, while others got flexible ducting during HVAC updates that didn’t always match the old trunk lines. In those mill-era triple-deckers, ductwork was often added decades after construction, so runs snake through unheated crawl spaces or interior chases. Our techs frequently find disconnected sections or crushed flex where a previous replacement cut corners.
The climate sharpens all of this. Waltham sits inland just west of Boston, with cold, snowy winters and humid summers. The heating-heavy cycle means ducts carry warm, dry air most of the year, and when the system first kicks on each fall, it stirs up settled dust and microbial debris that has been sitting since spring.
Our Main Waltham Services
Homeowners in Waltham call us most often for these three jobs. Each has its own page with full details.
Air Duct Cleaning in Waltham
We clean the full supply and return network with a Rotobrush rotary brush system or Nikro negative-air machine, depending on whether your home has flexible ducting or rigid galvanized lines. In Waltham’s older homes, we often start with a camera inspection to map disconnected runs or crushed sections before we begin. Every job gets a written price before we touch the system, and we photograph the duct interior before and after. Air Duct Cleaning in Waltham has the full breakdown.
Dryer Vent Cleaning in Waltham
Dryer vent blockages are a genuine fire hazard, especially in Waltham’s triple-deckers where vents may run through multiple floors or terminate in odd locations. We clear the full run from appliance to exterior cap, check airflow with a manometer, and flag any corrugated transition duct that should be replaced with solid metal. If we find a disconnected section in a chase wall, we’ll show you exactly where and explain your options. Dryer Vent Cleaning in Waltham covers what to expect.
Duct Sealing in Waltham
Leaky ductwork in Waltham’s unheated crawl spaces and interior chases wastes heated air and pulls in musty basement air. We seal accessible joints with mastic and fiberglass mesh, then pressure-test the system to verify the seal held. In homes with crushed flex duct or mismatched retrofits, sealing is often the step that follows cleaning, and we price both together in writing before we start. Duct Sealing in Waltham explains our full process.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Waltham
We stock parts and filtration products from Honeywell, Aprilaire, and Guardsman, and our equipment roster includes Rotobrush and Nikro systems. Most filter replacements and component swaps are completed on the first visit. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Waltham, MA
| Service | Typical range in Waltham |
|---|---|
| Whole-system air duct cleaning (single-family, up to 12 vents) | $350 – $650 |
| Whole-system air duct cleaning (larger home, 13 – 20 vents) | $550 – $850 |
| Dryer vent cleaning (single-story, direct exterior vent) | $120 – $180 |
| Dryer vent cleaning (multi-story or extended run) | $180 – $280 |
| Duct sealing (partial, accessible basement/crawl space) | $400 – $700 |
| Duct sealing (whole-system with pressure test) | $800 – $1,400 |
| Camera inspection of ductwork | $150 – $250 |
| Sanitizing/mildew treatment (per system) | $150 – $300 |
| HVAC filter upgrade (Honeywell or Aprilaire media) | $85 – $175 |
| Combustion byproduct remediation (older oil/coal residue) | $200 – $450 |
What pushes Waltham prices higher: homes with original galvanized ductwork that needs gentler handling, multi-story dryer vent runs common in triple-deckers, and concealed damage from prior HVAC retrofits that we discover during inspection. The price we write down before work starts is the price you pay. No per-vent add-ons, no equipment charges that appear at the door.
Neighborhoods We Serve in Waltham
Our crews cover the full city, from the South Side mill districts to the north-side post-war subdivisions. Most Waltham appointments are scheduled within a few business days, with routing designed to keep drive time minimal across the city.
- South Side / Moody Street area
- The Highlands
- North Waltham / Piety Corner
- Cedarwood
- Brandon Woods
Service Area – Cities Near Waltham
We schedule Waltham jobs alongside calls from neighboring communities. Our regular service area includes Belmont, MA, Lexington, MA, Newton, MA, and Arlington, VA. Dispatch is coordinated from our Boston office to keep routes efficient and arrival windows reliable.
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 About Air Duct Cleaning Company in Waltham
We typically schedule Waltham appointments within three to five business days, with exact timing confirmed when you call. Call (361) 326-5060 to check current availability.
No permit is required for standard residential duct cleaning, dryer vent cleaning, or duct sealing in Waltham. If we find code issues during the job, we’ll document them and explain what needs a licensed HVAC contractor versus what we can address directly.
Yes. We clean ductwork and dryer vents in Waltham’s triple-deckers, condos, and multi-unit buildings regularly. We coordinate access with building owners or management when needed, and we carry proof of insurance for any association that requires it.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Waltham Customers Say
"Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O."Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q.