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
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Before
AfterAir Duct Cleaning Company in Denver, CO
Full-system air duct cleaning in Denver typically runs $350 – $650 for a standard single-family home, with most jobs completed in one visit. What sets Denver apart is the combination of extreme aridity, high radon levels, and aging housing stock that puts unique stress on duct systems. At Hollis Air Duct Cleaning, we dispatch from our Denver office and serve the metro with background-checked, uniformed technicians who arrive inside the quoted window and leave the price in writing before any work starts. Call us at (361) 326-5060 for a free estimate.
Why Denver Homes Are Different
Denver’s semi-arid climate delivers only about 15 inches of annual precipitation, and those dry conditions change what we find inside ducts. Instead of the moisture-driven mold common in humid regions, we see fine dust, dry debris, and elevated static electricity that makes duct surfaces attract and hold more particulate matter. Winter inversions trap pollutants close to the ground, and once they enter a home’s ventilation system, they circulate until physically removed.
The housing stock compounds this. Most Denver homes are single-family detached, the majority built before 1980, with forced-air furnaces and ductwork that’s often original or aging. In neighborhoods like Washington Park and Capitol Hill, we regularly encounter galvanized steel ducts from the early 1900s with interior rust and scale that flakes off into the air supply. That’s a problem rare in newer suburbs but standard in pre-war Denver housing. Add to this some of the highest radon levels of any major U.S. metro, and duct cleaning here becomes as much about mitigating dry-air dust and radon distribution as standard allergen removal.
Our Main Denver Services
Denver homeowners call us most often for these three services. Each has its own Denver page with detailed pricing, process, and neighborhood-specific notes.
Air Duct Cleaning in Denver
We clean the full supply and return duct network using a Rotobrush rotary brush system for agitation and a Nikro negative-air machine to pull loosened debris out of the home entirely. In Denver’s dry climate, we typically find compacted fine dust and pollen rather than mold, which changes our brush selection and filtration setup. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in Denver covers full pricing, what’s included, and how we handle older galvanized systems.
Dryer Vent Cleaning in Denver
Lint buildup in dryer vents is a leading cause of house fires nationwide, and Denver’s dry air doesn’t reduce the risk, it increases static cling that traps lint in bends and transitions. We clean the full vent run from the back of the dryer to the exterior termination, using rotary brushes and high-velocity air tools, then verify airflow with a meter. Dryer Vent Cleaning in Denver has pricing, frequency recommendations, and what we do when vents run through crawl spaces common in older Denver homes.
Duct Sealing in Denver
Leaky ducts waste heated and cooled air into attics and crawl spaces, and in Denver’s climate that means fighting 90-degree summer days and sub-zero winter nights with a handicapped system. We seal accessible joints and seams with mastic and reinforced tape, then pressure-test to verify results. Duct Sealing in Denver explains the process, typical savings on heating bills, and how we handle access in homes with finished basements or tight crawl spaces.
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 Denver
We stock parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman, and we service all major HVAC brands common in Colorado homes. Most filter replacements and component swaps happen same-visit. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Denver, CO
| Service | Typical range in Denver |
|---|---|
| Standard whole-home air duct cleaning (1 system, up to 12 vents) | $350 – $650 |
| Larger home or dual-zone system (13 – 20 vents) | $550 – $850 |
| Dryer vent cleaning (standard single-story run) | $120 – $200 |
| Dryer vent cleaning (multi-story or extended run) | $180 – $280 |
| Duct sealing (whole system, accessible ductwork) | $400 – $900 |
| Combined duct cleaning + dryer vent | $450 – $780 |
| Sanitizing treatment (after cleaning, per system) | $75 – $150 |
| Main trunk line cleaning (add-on to standard service) | $100 – $200 |
Prices in Denver run toward the higher end when homes have original galvanized ductwork requiring gentler brush techniques, or when access is limited by finished basements or tight attic hatches. The price we write down before work starts is the price you pay. No per-vent add-ons, no equipment fees, no surprises at the door.
Neighborhoods We Serve in Denver
We run scheduled routes across the Denver metro, with most appointments booked within a few days of calling. Crews carry the full equipment roster so we’re prepared for the housing type we encounter, whether it’s a 1920s bungalow or a 1970s tract home.
- Washington Park
- Capitol Hill
- Highlands
- Stapleton
- Aurora (east Denver metro)
Service Area – Cities Near Denver
Our Denver office dispatches crews throughout the Front Range corridor. We regularly serve Boulder, CO to the northwest, Greeley, CO to the northeast, Fort Collins, CO to the north, and Colorado Springs, CO to the south. Scheduling is coordinated from Denver, with route efficiency keeping travel charges minimal for outlying appointments.
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 About Air Duct Cleaning Company in Denver
No permit is required for standard residential duct cleaning or dryer vent cleaning in Denver. Duct sealing that involves modifying or extending ductwork may need a permit depending on scope; we flag this during the estimate and can advise on whether your project triggers city review. Call (361) 326-5060 and we’ll walk through your specific setup.
Most Denver metro appointments are scheduled within 2 – 5 business days. We don’t overbook, so the window we quote is the window we keep. Winter inversions and high pollen seasons can increase demand; calling ahead of peak periods secures your preferred date.
Interior duct cleaning requires no HOA approval. If dryer vent termination or duct sealing work requires exterior access in a multi-unit building, some Denver HOAs require notice or scheduling coordination. We provide written scope descriptions on request for HOA submission. Call (361) 326-5060 if you need documentation for your board.
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 Denver Customers Say
"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."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.