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 Boulder, CO
Air duct cleaning in Boulder, CO typically runs $350 – $650 for a whole-home system and is scheduled by appointment with a written price locked in before any work begins. Boulder homes face a dual challenge that most markets don’t: wildfire smoke seasons dump fine ash into ductwork, while the city’s widespread swamp coolers operate on separate duct systems that need specialized cleaning to prevent mold and debris buildup. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews serve Boulder from our Denver scheduling office. Call us at (361) 326-5060 for a free estimate with no per-vent pricing games.
Why Boulder Homes Are Different
Boulder’s housing stock skews older than many Front Range cities. Homes built from the 1950s through the 1970s, common in neighborhoods like Table Mesa and Martin Acres, often run on original galvanized or flexible ductwork that corrodes internally and traps debris far more aggressively than modern systems. The seams loosen, the lining degrades, and what should be a smooth airway becomes a network of ledges where pollen and ash collect.
The climate compounds this. Boulder’s semi-arid conditions bring intense spring pollen from foothill junipers and native plants, followed by summer wildfire smoke drifting across the Front Range. These particles are smaller and more adhesive than standard household dust. We’ve opened vents in North Boulder homes and found gray ash coating the trunk lines from fires two counties away.
Then there’s the swamp cooler factor. Many Boulder homes, especially in the older core and up toward the foothills, use evaporative cooling rather than central AC. These systems run on separate ductwork from the furnace, and that ductwork stays damp through July and August. In a dry climate where coolers run constantly, that moisture attracts mold spores that standard furnace cleaning won’t touch. Our technicians carry Nikro negative-air machines and Rotobrush rotary systems specifically to handle both duct networks without cross-contaminating them.
Our Main Boulder Services
Most Boulder homeowners call us for one of three jobs. Each has its own local conditions, equipment demands, and pricing structure.
Air Duct Cleaning in Boulder
Whole-system air duct cleaning in Boulder means every supply and return trunk, branch line, and register gets brushed and extracted with negative-air containment. Because of the wildfire ash and pollen load here, we typically see heavier debris than in lower-elevation Colorado cities. Our crews run Rotobrush rotary brushes through flexible ductwork and use Nikro HEPA-filtered vacuums to keep particles from re-entering the home. Air Duct Cleaning in Boulder covers full-home pricing, what’s included, and how we handle homes with dual duct systems.
Dryer Vent Cleaning in Boulder
Dryer vent cleaning in Boulder addresses a fire hazard that builds faster than most homeowners expect. Lint accumulation restricts airflow, forces the dryer to overheat, and in Boulder’s dry climate with frequent static conditions, the ignition risk is real. We clean the full run from the back of the dryer to the exterior termination, using rotary brushes and high-velocity air tools. Roof-vented systems, common in older Boulder homes, require ladder access and specialized equipment. Dryer Vent Cleaning in Boulder has full details on routing, pricing, and when a replacement vent is the safer call.
Duct Sealing in Boulder
Duct sealing in Boulder targets the leaks that older galvanized and flexible systems develop at seams and joints. In homes with swamp coolers, we often find the cooling ducts leaking conditioned air into attics or crawl spaces, wasting the limited cooling capacity evaporative systems provide. We apply duct sealing mastic and mechanical fasteners to restore airflow where it belongs. Duct Sealing in Boulder explains how we test for leaks, what sealing methods we use, and why sealed ducts matter for both heating and cooling efficiency.
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 Boulder
We clean and service duct systems connected to HVAC equipment from Honeywell, Aprilaire, and other major brands, and we stock Guardsman filtration products for replacement on the same visit. Most filter upgrades happen while the cleaning crew is still on site. our brands
Pricing for Air Duct Cleaning Company in Boulder, CO
| Service | Typical range in Boulder |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Whole-home air duct cleaning (dual system: furnace + swamp cooler) | $550 – $950 |
| Dryer vent cleaning (ground-floor termination) | $120 – $180 |
| Dryer vent cleaning (roof termination) | $180 – $260 |
| Duct sealing (per system, mastic application) | $400 – $800 |
| Register and grille deep cleaning (add-on) | $75 – $125 |
| Swamp cooler duct mold treatment | $200 – $400 |
| HEPA filtration upgrade (Guardsman) | $80 – $150 |
What pushes Boulder prices toward the higher end: dual duct systems requiring separate cleaning passes, heavy wildfire ash accumulation needing extended extraction time, and roof-access dryer vents common in pre-1980s homes. Whatever your situation, we write the price down before any work starts. That number does not move at the door.
Neighborhoods We Serve in Boulder
Our crews work across Boulder city limits and the surrounding foothill communities. Dispatch is coordinated from our Denver office, and we schedule Boulder appointments with arrival windows we actually hit.
- Table Mesa
- Martin Acres
- North Boulder (NoBo)
- Mapleton Hill
- Newlands
Service Area – Cities Near Boulder
We schedule air duct, dryer vent, and duct sealing work throughout the northern Front Range. Homeowners in Denver, CO, Greeley, CO, Fort Collins, CO, and Colorado Springs, CO can call the same line for appointment availability and written estimates.
Serving Boulder, CO - Our Local Coverage Area
We’re based in the Boulder 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 Boulder
No permit is required for residential duct cleaning in Boulder. Some HOAs in planned communities like North Boulder have exterior work rules that affect roof-access dryer vents; we check those restrictions before scheduling ladder work. Call (361) 326-5060 and we’ll confirm what’s needed for your property.
We schedule heavier cleanings in September and October after peak smoke, using HEPA-filtered Nikro negative-air machines that capture fine ash particles standard vacuums miss. If your home was exposed to heavy smoke, tell us when you call so we allocate the right extraction time.
Yes, and we recommend it. The two systems share no airflow, so contamination doesn’t cross, but scheduling them together saves a trip charge and lets us inspect both for leaks or mold. We price dual-system cleanings as a single written quote, not two separate add-ons.
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 Boulder Customers Say
"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."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L.