Fast, Reliable Air Duct Cleaning Across Denver
Air duct cleaning in Denver typically runs $350-$750 for a full residential system, with most jobs completed in a single visit. We answer calls from Denver homeowners around the clock, and our technicians usually arrive same-day or next-day throughout the metro.
We’ve been driving to Denver from our Los Angeles headquarters for over 42 years, and we know the city’s ductwork like we know our own tools. From the Denver Squares of Capitol Hill to the post-war ranches lining Monaco Parkway, we’ve cleaned ducts in homes built during every era of this city’s growth. Denver’s 5,280-foot elevation, wildfire smoke exposure, and aging housing stock create conditions you won’t find in Kansas City or Cleveland. Our Air Duct Cleaning team brings rotary brush systems from Rotobrush and HEPA-filtered vacuums from Nikro that handle everything from modern flex-duct to century-old galvanized trunk lines. Call (844) 685-6342 for a free estimate. We’ll be there when we say.
Why Bellows Air Duct & Vent Co. Is Denver’s Preferred Air Duct Cleaning Company
Denver homeowners don’t want a coupon that triples at the door. They want a square deal: one honest price, shown before we start, and a crew that doesn’t leave until the job is done right. That’s what we’ve delivered since 1984.
Our reputation in Denver is built on callbacks we never had to make. The 90-Day Done Right Promise is stamped on every job, in writing, with no paperwork required if something needs attention. Background-checked, uniformed technicians arrive with camera inspection equipment, not a sales pitch. We’ve cleaned ducts in Baker, Park Hill, and the Highlands, and we know the difference between a 1920s gravity-furnace retrofit and a 1990s tract-home system before we step through the door.
Calls are answered by a live person, 24 hours a day. Not a voicemail tree. Not an app. A real person who can dispatch a crew to 80203, 80204, 80205, or 80206 today.
Our Air Duct Cleaning Services in Denver
Residential Duct Cleaning
Denver’s semi-arid climate and 40°F+ daily temperature swings mean fine dust and allergen particles stay airborne longer before settling into duct interiors. We use Rotobrush rotary systems and HEPA-filtered negative air machines to remove buildup from supply and return lines in single-family homes, townhomes, and condos from Sloan’s Lake to Cherry Creek. Most residential cleanings in Denver are completed in one visit, with before-and-after video inspection included.
Commercial Duct Cleaning
Restaurants along Colfax, medical offices near Saint Joseph Hospital, and retail spaces in the Golden Triangle face Denver’s unique particulate load from Front Range dust and seasonal wildfire smoke. Our commercial crews work after hours to minimize disruption, using Abatement Technologies portable HEPA systems that capture particles at 99.97% efficiency. We document every job with video for property managers and facilities compliance.
Supply Duct Cleaning
Supply lines push conditioned air into every room, but in Denver’s older homes they’re often patched with flex-duct running from oversized plenums installed during 1950s gravity-furnace retrofits. These irregular connections trap debris that standard equipment misses. We use camera-guided rotary brushes and adjustable-size whips to reach stubborn pockets, then verify clearance with post-cleaning video.
Return Duct Cleaning
Return lines pull air back to the furnace, and in Denver’s pre-1960 housing stock they often draw through original wall cavities or undersized sheet-metal chases coated with decades of accumulation. Our return-duct process includes register removal, trunk-line agitation, and plenum access cleaning, with particular attention to seam integrity. At Denver’s elevation, any gap in return ductwork pulls in unfiltered basement or crawl-space air that works against your entire HVAC system.
Full System Cleaning
A full system cleaning addresses supply ducts, return ducts, trunk lines, plenums, and the air handler cabinet in one coordinated visit. In Denver, this is often the only way to address the layered problems of retrofitted gravity-furnace systems: oversized plenums, mismatched trunk lines, and flex-duct patches that each require different tools and techniques. We price full system cleaning upfront, before a single tool is lifted.
Video Inspection
Every Bellows job starts and ends with camera inspection. In Denver, this isn’t just documentation, it’s discovery. Our technicians have found deteriorating asbestos wrap on original octopus-furnace plenums, collapsed flex-duct in inaccessible crawl spaces, and open seams pulling unfiltered air from rodent-affected basements. You see what we see, before and after, with no interpretation required.
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 Denver
We clean and service ductwork connected to Aprilaire media air cleaners, Honeywell electronic air cleaners, and Abatement Technologies HEPA filtration systems. Our trucks carry replacement filters and components for these brands, so Denver homeowners aren’t left waiting for a parts order from out of state. For homes with whole-house humidifiers, we stock Aprilaire water panels and can integrate humidifier service with your duct cleaning appointment. The same brands serious HVAC contractors specify are the ones we specify too.
Common Air Duct Cleaning Problems We See in Denver Homes
- Asbestos-wrapped plenums in pre-1960 homes. In Capitol Hill, Curtis Park, and Five Points, we regularly encounter original octopus-furnace plenums with deteriorating asbestos-containing insulation wrap. This is a legal stop-work condition requiring licensed abatement before any cleaning can proceed. National franchise crews often miss this on the estimate call.
- Gravity-furnace retrofits with oversized, irregular plenums. The 1950s forced-air conversions in Denver Squares and Craftsman bungalows left plenums and trunk lines that don’t match modern equipment. Debris traps in corners and transitions that standard brushes can’t reach.
- Daily temperature swings opening sheet-metal seams. Denver’s 40°F+ diurnal swings expand and contract ductwork aggressively, progressively opening seams in post-war galvanized systems and drawing unfiltered crawl-space or basement air into the supply stream.
- Accelerated buildup from low humidity and wildfire smoke. Under 15 inches of annual rainfall means fine particles stay airborne longer before settling into ducts. Add Colorado and Western U.S. wildfire smoke each summer and fall, and Denver systems accumulate debris measurably faster than comparable cities at lower elevations.
Pricing for Air Duct Cleaning in Denver, CO
A typical residential duct cleaning in Denver runs $350-$550 for a standard single-system home up to 2,500 square feet. Full system cleaning with video inspection, supply and return trunk lines, and air handler access typically ranges $550-$750. Commercial duct cleaning is priced by linear foot and system complexity, with most small-business jobs falling between $800-$1,800.
What moves the number: square footage, number of HVAC zones, accessibility of ductwork (crawl spaces and attic runs take longer), and whether we encounter conditions like asbestos wrap or collapsed flex-duct that require additional work before cleaning can proceed. We disclose every cost before starting. The number on the phone is the number on the invoice.
We offer a permanent 5% Senior and Veteran discount, and our $89 Seasonal Tune-Up can identify whether your ducts need full cleaning before you commit to the larger job. Free estimates. No bait coupons. Call (844) 685-6342.
| Service | Typical Denver Range |
|---|---|
| Standard residential duct cleaning (single system) | $350-$550 |
| Full system cleaning with video inspection | $550-$750 |
| Commercial duct cleaning (small business) | $800-$1,800 |
| Video inspection only (diagnostic) | $150-$250 |
| Dryer vent cleaning (add-on) | $125-$195 |
We Also Serve Cities Near Denver
Our crews regularly work in Denver and the surrounding communities of Lakewood, Wheat Ridge, Commerce City, and Englewood. Same-day and next-day scheduling available throughout the metro. Whether you’re in a 1920s Denver Square or a 1980s ranch in Wheat Ridge, we bring the same camera-verified process and upfront pricing.
Serving Denver, CO - Our Local Coverage Area
We’re based in the Denver 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 Denver
Denver’s 5,280-foot elevation and semi-arid climate create 40°F+ daily temperature swings that expand and contract sheet-metal ductwork aggressively, progressively opening seam gaps. The low relative humidity, averaging near 40% annually, also means fine dust and allergen particles remain suspended in indoor air far longer before settling into duct interiors, accelerating buildup between cleanings. We inspect seam integrity as standard practice and recommend sealing when gaps are found. Call (844) 685-6342 for a free estimate.
Yes, and it’s more likely than most homeowners realize. In central Denver ZIPs 80203 and 80205, we regularly find original octopus-furnace plenums with deteriorating asbestos-containing insulation wrap still in place from the 1920s-1940s. This is a legal stop-work condition; Bellows cannot proceed with cleaning until licensed abatement is completed. We always camera-inspect accessible plenums before quoting, a step flat-rate national crews often skip. If you suspect asbestos, call us for a preliminary inspection before scheduling full service.
A gravity furnace used natural convection, no blower, with large “octopus” ducts radiating from a central plenum. In the 1950s, many Denver homes had forced-air blowers crudely added to these systems, leaving oversized plenums, mismatched trunk lines, and irregular flex-duct patches that trap debris standard equipment cannot reach. In a Capitol Hill Denver Square, we found a 1920s gravity furnace plenum still mated to 1950s forced-air ductwork. The original asbestos-wrapped trunk was crumbling, halting our cleaning until a licensed abatement crew handled it. We then video-inspected the modern flex-duct patches and recommended a full retrofit to restore airflow and indoor air quality. Without camera inspection and rotary brushes sized for irregular spaces, these systems stay partially dirty.
Yes, measurably so. Denver sits in a geographic bowl at the base of the Rockies that traps Front Range particulate matter and, increasingly, wildfire smoke from Colorado and Western U.S. fires that blanket the city each summer and fall. Paired with a semi-arid climate averaging under 15 inches of annual rainfall, fine particles stay airborne far longer before settling deep into ductwork, meaning Denver systems accumulate debris faster than comparable cities at lower elevations with higher humidity. We see repeated post-smoke duct cleanings that are essentially unheard-of in flatland metros. If you’ve smelled smoke indoors during a fire event, schedule camera inspection to assess buildup. Call (844) 685-6342.
Denver’s 40°F+ diurnal temperature swings cause sheet-metal ductwork to expand and contract aggressively each day, progressively fatiguing seams and opening gaps. In post-war ranch homes on the eastern edges of central ZIPs, original galvanized sheet-metal ducts with failing mastic or open seams pull unfiltered basement or crawl-space air directly into the supply stream. This happens even after a thorough cleaning if seams aren’t sealed. We inspect accessible seams during every job and recommend sealing when gaps are found, so your clean ducts stay clean. Estimates are free; call (844) 685-6342.
Ready to see what’s inside your ducts? Call Bellows Air Duct & Vent Co. at (844) 685-6342 for a free estimate. We’ll camera-inspect your system, show you exactly what we find, and give you one honest price before any work begins. Done right, and backed in writing for 90 days.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Denver since 1984.