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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Before
AfterAir Duct Cleaning Company in Boulder, CO
Air duct cleaning in Boulder typically costs between $380 and $620 for a standard single-system home, and most jobs are completed in half a day. Boulder’s mix of 1970s ranches, 1990s subdivisions, and newer foothills construction means no two duct systems present the same job. We’re Cardinal Air Duct Cleaning, part of the Relay Home Co. family, and we handle duct work across Boulder with one standard: a written price before any equipment comes off the truck. Call us at (737) 727-2314 for a free estimate.
Why Boulder Homes Are Different
Boulder sits at 5,318 feet against the Flatirons, and that elevation shapes how homes here accumulate dust. Dry mountain air holds less moisture than coastal climates, so dust stays airborne longer and settles into return registers and supply runs faster. Homes in Mapleton Hill and University Hill, many built before 1950, often have sheet metal ducts that were sized for gravity furnaces, not the high-efficiency forced-air systems most homeowners have retrofitted since. That mismatch means airflow restrictions in older Boulder homes are structural, not just a matter of dirty vents.
Newer construction in Gunbarrel and the Arapahoe Ridge area tells a different story. Builders in Boulder County are required to follow the City of Boulder’s Green Points program for remodels and new builds, which encourages tighter building envelopes. Tighter homes trap whatever enters the duct system. We regularly see construction dust, drywall compound, and paint overspray still circulating in ducts months after a remodel wraps. Add pine pollen from the foothills each spring and the fine clay dust that blows in from open space trails, and Boulder ducts earn their cleaning faster than most homeowners expect.
Our Main Boulder Services
Most Boulder homeowners call us for one of three jobs: duct cleaning, dryer vent service, or full HVAC system cleaning. Each has its own page with local pricing, but here’s the short version of what each involves in Boulder.
Dryer Vent Cleaning in Boulder
Lint buildup in dryer vents is a fire hazard anywhere, but Boulder’s dry climate makes lint especially combustible. Homes in North Boulder and Martin Acres with long vent runs, those that exit through the roof or snake through crawl spaces, are the ones we see clog fastest. A typical Dryer Vent Cleaning in Boulder job takes about an hour. We run a Rotobrush through the full vent length, then verify airflow at the exterior termination. If your dryer routinely takes two cycles to dry a load, the vent is telling you something.
Air Duct Cleaning in Boulder
Whole-home duct cleaning is the service Boulder homeowners book most in late spring, after pollen season peaks, and in early fall before windows shut for winter. Our Air Duct Cleaning in Boulder work uses a Nikro HEPA vacuum for negative-pressure extraction, which means loosened debris goes straight into the vacuum rather than back into your living room. We brush every supply run, return, and the main trunk line, then finish the plenums and blower cabinet. Most Boulder homes are done in about four hours.
HVAC Cleaning in Boulder
An HVAC cleaning goes beyond the ducts to the components that move air: the evaporator coil, blower wheel, and housing. Boulder’s hard water means humidifier scale and mineral buildup on coils is common, and a fouled coil cuts system efficiency noticeably. HVAC Cleaning in Boulder addresses the full airflow path. We recommend it when a duct cleaning alone won’t solve persistent dust or uneven heating, which we see often in two-story Boulder homes where the blower hasn’t been serviced in years.
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 work on carriers, Tranes, Lennox, Rheem, and Goodman equipment, and our trucks carry common replacement filters and components suited to the systems Boulder homes run. For filtration upgrades, we install Aprilaire and Honeywell media cabinets. Turnaround on stocked parts is same-day; specialty orders usually arrive within 48 hours. See our brands page for full compatibility details.
Pricing for Air Duct Cleaning Company in Boulder, CO
| Service | Typical range in Boulder |
|---|---|
| Whole-home air duct cleaning (single system) | $380 – $620 |
| Whole-home air duct cleaning (dual system) | $600 – $900 |
| Dryer vent cleaning | $130 – $180 |
| HVAC cleaning (coil, blower, housing) | $420 – $700 |
| Furnace / air handler cleaning | $180 – $320 |
| Return-side cleaning only | $220 – $350 |
| Duct cleaning with Aprilaire filter install | $520 – $810 |
| Full system: ducts + HVAC components | $720 – $1,300 |
What pushes a Boulder price toward the top of a range is usually access: crawl-space duct runs under a 1970s ranch in South Boulder take longer than a basement-finished system in Wonderland Hill. Long flex runs and multi-zone setups also add time. Whatever the number is, we hand you the written price before any work starts, and that number does not change at the door.
Neighborhoods We Serve in Boulder
We cover the entire Boulder city limits and surrounding Boulder County. Our techs run routes across town most days, and standard scheduling gives you a live arrival window you can track from your phone.
- Mapleton Hill
- University Hill
- North Boulder
- Martin Acres
- Gunbarrel
Service Area – Cities Near Boulder
Our Boulder crews also take jobs throughout the Front Range. If you’re outside the immediate Boulder service area, we run routes into Denver, CO, Greeley, CO, Fort Collins, CO, and Colorado Springs, CO. Dispatch and scheduling for Boulder jobs are coordinated from the Relay Home Co. Denver office, with local crews on the ground in Boulder every week.
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
We schedule Boulder jobs within the same week in most cases, and every booking gets a live trackable arrival window through The Relay Standard. You’ll know your tech’s name before they knock. Call (737) 727-2314 and we’ll get you on the schedule while you’re on the line.
Duct cleaning itself doesn’t require a permit in Boulder, and we haven’t run into an HOA in the city that restricts interior duct work. The only exception is rooftop or exterior vent terminations on some multi-family buildings, which we’ll handle with the same equipment and no drama.
Every Cardinal Air Duct Cleaning job in Boulder includes before-and-after photos of your own ducts, taken inside the runs with an inspection camera. You’ll see the difference in the same shots, plus get a digital invoice you can pay from a link. No mystery, no trust fall.
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
"Booked a slot in the app, got a reminder text, and watched the crew's van on the map as it came. Cleaned all the vents and the main trunk. Easy from start to finish."
- Rob J."Cleaning plus HVAC coil clean. Tech texted when he was ten minutes away. No surprises on the price."
- Evan S."Dryer vent fix fixed the burning smell. The clog was behind the elbow and the whole laundry room smells normal now."
- Dennis K.