Fast, Reliable Air Duct Cleaning Across Boulder
Air duct cleaning in Boulder typically runs $350-$650 for a full residential system, and most of our jobs are completed in a single visit with camera-verified results you can see for yourself. We’re Boulder‘s local air duct cleaning company, and we know the specific challenges this foothills city throws at ductwork: the Chinook winds, the wildfire smoke, the vintage housing stock that predates modern filtration. Call us at (844) 685-6342 for a free estimate with upfront pricing - the number we quote is the number on the invoice.
We’ve been serving Colorado homeowners for over 42 years, and our technicians make the drive up from the Denver-Boulder corridor regularly. That means we’re familiar with the neighborhoods from University Hill to Table Mesa to the newer developments near 28th Street, and we understand how Boulder’s 5,430-foot elevation and semi-arid climate keep fine particulates suspended and mobile inside your ducts long after they’d settle in a wetter climate.
Why Bellows Air Duct & Vent Co. Is Boulder’s Preferred Air Duct Cleaning Company
Our reputation in Boulder was built the old-fashioned way: by showing up when we say we will, doing the job right, and standing behind it with our 90-Day Done Right Promise in writing. We don’t bait-switch with coupon pricing, and we don’t send subcontractors - every technician is background-checked, uniformed, and equipped with professional-grade Rotobrush and Nikro equipment.
Boulder homeowners call us because we’ve handled the specific problems this city creates. We serviced a 1970s split-level in Table Mesa (80305) after the Marshall Fire. The original sheet-metal ducts had never been cleaned, and our Rotobrush extracted over 40 pounds of ash and debris mixed with decades of dust. Post-cleaning, the homeowner reported no more smoky smell when the furnace kicked on during windy days. That’s the kind of result our camera inspection verifies - before and after, every time.
Calls are answered by a live person, 24 hours a day. Not voicemail. Not an app. A real person who can dispatch a technician to Boulder, often same-day or next-day depending on your location and the season.
Our Air Duct Cleaning Services in Boulder
Residential Duct Cleaning
Boulder’s strict growth controls - the Blue Line, urban service area limits, aggressive open-space acquisition - have constrained new development for decades. That means a large share of the housing stock consists of 1950s-1970s ranch homes and split-levels, particularly in South Boulder neighborhoods like Table Mesa, where original sheet-metal ductwork that has never been professionally cleaned is common. Our residential duct cleaning uses Rotobrush agitation to dislodge bonded particulates that standard vacuuming simply can’t touch. We clean the full system: supply ducts, return ducts, trunk lines, and registers.
Commercial Duct Cleaning
Boulder’s commercial base runs from research labs along the Diagonal Highway to retail on Pearl Street to office parks near Foothills Parkway. We clean commercial duct systems with minimal disruption to your operations, and we schedule around your hours. Our Nikro equipment handles larger-diameter commercial trunk lines, and we provide documentation for facilities managers who need maintenance records for insurance or compliance.
Supply Duct Cleaning
Supply ducts push conditioned air into your rooms, and in Boulder they’re particularly vulnerable to wildfire smoke infiltration. Boulder’s Chinook winds regularly gust above 100 mph through Boulder Canyon, creating rapid pressure differentials that draw outdoor smoke and particulates into duct systems - a phenomenon unique to this foothills city versus Denver or Fort Collins. We clean supply ducts with brush-and-vacuum agitation, then verify with camera inspection that the airflow path is clear.
Return Duct Cleaning
Return ducts pull air back to your HVAC system, and they’re where the heaviest accumulation typically occurs - pet dander, dust, pollen from Boulder’s surrounding grasslands, and in recent years, wildfire ash. The return side is also where we most often find damage from the 2013 Boulder flood in homes along Boulder Creek, where moisture entered crawlspace ductwork and created residual mold issues still being remediated in some older properties.
Full System Cleaning
Our most thorough service. We clean every component of your duct system - supply, return, trunk lines, plenums, and registers - plus your HVAC blower and evaporator coil if accessible. In Boulder, we strongly recommend full system cleaning for any home within the 80302, 80303, 80305, or 80322 ZIP codes that has not been professionally cleaned in the past three years, particularly if you experienced smoke odor during the Marshall Fire or subsequent wind events.
Video Inspection
Every job starts and ends with camera inspection. You see what we see: the pre-cleaning condition of your ducts, and the post-cleaning results. In Boulder’s older housing stock, video inspection often reveals construction debris from the original 1950s-1970s build, rust in crawlspace sections from the 2013 flood, or gaps where Chinook wind pressure has separated duct seams. We show you. Then we fix what needs fixing.
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.
Trusted Brands We Service in Boulder
We run professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies - the same brands serious HVAC contractors specify for commercial and residential work. For Boulder homeowners, this means we’re not improvising with shop vacuums and extension wands. Our Rotobrush system uses spinning brushes and simultaneous vacuum extraction to dislodge and remove debris from duct walls, including the original sheet-metal ductwork common in Boulder’s older neighborhoods. We stock parts and maintain equipment locally, so if your job requires specialized handling for vintage duct materials or post-flood remediation, we’re prepared without waiting on shipments.
Common Air Duct Cleaning Problems We See in Boulder Homes
- Wildfire smoke recontamination from Chinook winds. Neglecting seasonal duct cleaning before wildfire season leads to recontamination when Chinook winds blow ash into the system. The December 2021 Marshall Fire pushed smoke throughout Boulder proper, and subsequent wind events continue to draw particulates into ductwork - especially in homes backing up to open space.
- Failed cleaning on vintage sheet metal. Using standard vacuuming instead of Rotobrush agitation on 50+-year-old sheet metal fails to dislodge bonded particulates from original ductwork. We’ve opened ducts in Table Mesa and Martin Acres that looked clean to the eye but held decades of compacted debris.
- Crawlspace mold from the 2013 flood. Overlooking crawlspace ducts after moisture events like the 2013 flood means residual mold spores remain entrained and recirculate during dry months. Boulder’s low humidity keeps those spores mobile rather than letting them settle.
- Neglected rental properties near CU Boulder. Rental properties clustered in the 80302 and 80303 ZIP codes near CU Boulder’s campus frequently back up directly against city open space - meaning those homes simultaneously face the highest wildfire smoke and grassland particulate exposure AND the worst duct-maintenance track records, as student-tenancy churn discourages either landlords or renters from scheduling professional cleanings.
Pricing for Air Duct Cleaning in Boulder, CO
A typical residential duct cleaning in Boulder runs $350-$650 for a full system, depending on home size, duct accessibility, and contamination level. Here’s how that breaks down:
- Small home or partial system (up to 10 vents): $350-$450
- Medium home, full system (11-20 vents): $450-$550
- Large home or heavy contamination (21+ vents, post-fire, mold remediation): $550-$650+
- Video inspection alone: $150-$250 (credited toward cleaning if you proceed)
- Dryer vent cleaning add-on: $125-$175
What drives cost up: homes with original 1950s-1970s ductwork that requires extra agitation time, post-Marshall Fire smoke remediation with multiple cleaning passes, crawlspace access limited by Boulder’s rocky soils and tight foundations, or mold treatment following flood damage. What doesn’t change the price: we quote upfront before work begins. No bait coupons, no surprises on the bill. Call (844) 685-6342 for your exact quote - estimates are free.
Standing offers: $50 Off Any Repair Over $250; Free Second Opinion on Any Written Estimate; $89 Seasonal Tune-Up; permanent 5% Senior and Veteran discount.
We Also Serve Cities Near Boulder
Our service area extends throughout the Denver-Boulder corridor. We regularly work in Louisville - where Marshall Fire damage was most severe - plus Lafayette, Erie, and Broomfield. If you’re in one of these communities and concerned about wildfire smoke in your ducts, the same Chinook wind dynamics apply, and we bring the same equipment and the same upfront pricing.
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 - Air Duct Cleaning in Boulder
Yes, Chinook winds are a major factor. Boulder’s Chinook winds regularly gust above 100 mph through Boulder Canyon, creating rapid pressure differentials that draw outdoor smoke and particulates into home duct systems - a phenomenon unique to this foothills city versus Denver or Fort Collins. Even after the visible fire is out, subsequent wind events pull residual ash from burn areas and open space into ducts through gaps, seams, and return air pathways. We see this most in homes backing up to city open space in the 80302 and 80303 ZIP codes. If you smelled smoke when your furnace ran this past winter, your ducts likely contain particulates. Call (844) 685-6342 - we’ll camera-inspect and show you exactly what’s in there.
Yes, especially if the property backs up to open space. High turnover and lack of maintenance mean ducts accumulate more pet dander, dust, and smoke. We recommend annual video inspection and cleaning every 2-3 years for rental properties. Landlords in the University Hill and Goss-Grove areas often schedule cleanings between tenants to avoid complaints and maintain HVAC efficiency. Our upfront pricing means no surprises for property managers or tenants - one honest price, shown before we start. Call (844) 685-6342 to schedule around your lease cycle.
Yes, absolutely. Smoke particulates are microscopic and bond to duct walls, particularly in the presence of moisture from humidifiers or evaporative coolers. Boulder’s low humidity keeps fine particulates suspended and mobile, meaning they continue circulating through your home every time the system runs. We’ve extracted Marshall Fire ash from ducts in 2024 - three years after the fire - in homes where owners assumed the problem had dissipated. The only way to know is camera inspection. We’ll show you what’s actually in there, not guess. Call (844) 685-6342 for a free estimate.
Sometimes, but it varies by policy and insurer. Some Boulder homeowners have had duct cleaning covered as part of smoke damage remediation after the Marshall Fire; others have had claims denied if the insurer argues the ducts were already dirty. We provide detailed documentation - before-and-after video, photos, written scope of work - that many insurers accept. We also offer Free Second Opinion on Any Written Estimate if your insurer sends their own contractor. Call (844) 685-6342 and we can discuss your specific situation.
Original sheet-metal ductwork from this era was built with different materials and methods than modern flex-duct systems. The metal is often thinner, seams are single-lock rather than sealed, and decades of neglect have allowed particulates to bond to the interior surface. Standard vacuuming - the method discount operators use - simply cannot dislodge this material. Our Rotobrush system uses mechanical agitation specifically designed for metal ductwork, and we adjust brush stiffness based on duct age and condition. We’ve cleaned original ductwork in Table Mesa, Martin Acres, and North Boulder that had never been touched in 50+ years. The difference in airflow and air quality is immediate and measurable. Call (844) 685-6342 to discuss your home’s specific duct construction.
Ready to see what’s in your ducts? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate with upfront pricing. We’ll camera-inspect your system, show you the results, and clean it right - backed in writing for 90 days. No bait coupons. No paperwork if something needs fixing. Just a square deal, the way we’ve done it since 1984.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Boulder and Colorado’s Front Range since 1984.