Air Duct Cleaning Cost in Denver - One Flat Price, Before-and-After Photos

Every visit starts with

Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents

Worth knowing

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 & after – our own jobs

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How Much Does Air Duct Cleaning Cost in Denver?

Air duct cleaning in Denver typically costs between $299 and $649 for a standard single-family home, with most jobs in the metro area landing around $375-$450 when the system is reasonably maintained. Larger homes in neighborhoods like Cherry Creek, Wash Park, or Stapleton – where square footage often runs 2,800 to 4,200 feet and duct layouts are more involved – can push that number toward $550-$800 or higher depending on system complexity.

Those are real Denver market numbers, not national averages padded to look local. What follows is a line-by-line breakdown of what goes into that price and what moves it up or down in this specific market.

Air Duct Cleaning Cost Breakdown (2026)

Every written quote CleanRun delivers before starting a job covers the same core scope: Full System Cleaning with negative-pressure extraction through the full duct system, rotary brush agitation on all accessible runs, and a documented photo record of every duct run before and after the work. The table below reflects what Denver homeowners are paying in 2026 across different system sizes and service types.

What Those Numbers Actually Include

The price ranges above assume the technician is running a proper negative-pressure extraction system – meaning the ductwork is put under suction before any agitation starts, so debris travels out of the system rather than redistributing through the house. CleanRun uses Rotobrush and Nikro equipment for this stage. A rotary brush mechanically dislodges debris from duct walls while the vacuum draws it out at the collection point. That is the process. It takes two to four hours on a typical Denver home, not forty-five minutes.

The photo documentation is not a premium add-on at CleanRun – it is the standard deliverable on every job, backed by the 365-Day Done Right Promise. The inside of every duct run is photographed before work begins and again after completion, so the before-and-after difference is visible, not described. This has been the practice since CleanRun’s first job in 2013.

What those numbers do not include: any duct repair work discovered during inspection, Commercial Duct Cleaning for return air plenum cleaning on systems with difficult access, or permit fees for work that crosses into mechanical scope (rare for cleaning jobs in Denver but possible on full duct replacement). Any of those items is quoted separately, in writing, before work proceeds.

What Affects Air Duct Cleaning Pricing in Denver

Six factors move the price on any Denver job. Here is what each one actually does to the number and why it matters locally.

• Number of supply and return vents. Pricing scales with the count of vents, not just square footage. A 2,200 sq ft ranch in Harvey Park with a simple radial duct layout might have 12 vents. A 2,200 sq ft two-story in Stapleton with a trunk-and-branch design and separate return runs on each floor could have 22. Same square footage, meaningfully different job scope and price.
• System age and build era. Denver has a large inventory of homes built between 1955 and 1985 in neighborhoods like Montbello, Barnum, and Virginia Village. These systems often used galvanized steel ductwork with fiberglass duct liner that has degraded over decades. Cleaning these systems takes longer and requires more care than flex-duct systems in newer builds. Expect pricing toward the upper end of any range on pre-1985 homes with original ductwork.
• Debris load and last cleaning date. In Denver’s climate, the combination of dry summers, Front Range wildfire smoke infiltration, and low-humidity winters accelerates particulate accumulation in ductwork. Systems that have never been cleaned – common in homes sold between 2015 and 2023 when inspection timelines were compressed – can carry multiple years of debris, pet dander, construction dust, and fine particulates from smoke events. Heavier loads mean more time and sometimes a second pass.
• Accessibility of duct runs and air handler. In finished basements – extremely common in Denver’s single-family housing stock – duct runs are often enclosed behind drywall or drop ceilings. Where access panels weren’t installed, a technician may need to work through register openings with flexible brush extensions. Jobs with difficult access take longer. Any access panel work needed is noted in the written quote before the job starts, per Haven Standard Clause 1.
• Add-on services and system components. Dryer vent cleaning, air handler coil cleaning, blower wheel cleaning, and sanitizing treatments all add to the base price, but they are priced separately and presented as choices. A CleanRun technician will note what the camera shows and let you decide what scope makes sense. If the camera shows a clean blower wheel, the technician says so and doesn’t quote you for cleaning it.
• Contractor pricing versus coupon pricing. Denver has no shortage of operations running the $79 special duct cleaning offer. The gap between that number and what a properly scoped job costs is not a rounding error – it reflects either a radically different process (a portable shop-vac through two or three registers) or a foot-in-the-door that becomes a high-pressure upsell once the technician is in your home. The Denver Better Business Bureau has documented patterns of this model for years. A written price before any work starts – every time, no exceptions – is not a premium service feature; it is the minimum a homeowner should accept from any contractor.

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Denver-Specific Factors Worth Knowing

Altitude and Dry Air

At 5,280 feet, Denver’s air is drier than most major metros. Relative humidity inside homes regularly drops below 20% in winter months, which means fine dust and particulates stay airborne longer before settling in ductwork. Homes without a whole-home humidifier – Aprilaire units are common in newer Denver builds – tend to accumulate finer particulate loads in duct runs than homes in higher-humidity markets. It’s one reason CleanRun technicians photograph the interior of every run at inspection: debris at altitude often looks different from what a technician trained in a coastal market would expect.

Wildfire Smoke Infiltration

The Front Range has experienced multiple significant smoke events since 2020, with the Marshall Fire in December 2021 being the most severe for the immediate Denver metro. Homes that ran HVAC systems during heavy smoke events drew smoke-laden air through return registers and deposited fine carbon particulates throughout supply duct runs. In neighborhoods on Denver’s western edge – Lakewood border areas, Green Valley Ranch on the eastern side catching wind-driven events – we’ve pulled duct cameras into systems and found visible smoke staining on flex duct interiors three to four feet from the plenum. Standard dust debris cleans out differently than fine smoke particulate, and the photo record makes that visible to the homeowner before and after.

New Construction Dust

The Central Park (formerly Stapleton) development, Northfield, and portions of Green Valley Ranch saw heavy residential construction through 2018-2023. Homes built or finished during active adjacent construction phases often have significant drywall dust, concrete dust, and wood particulate in duct systems that was never cleaned out post-construction. Builders are not required to clean ductwork after construction, and most do not. First-time duct cleaning on a home in this category typically shows the heaviest debris loads CleanRun technicians encounter.

How to Save on Air Duct Cleaning in Denver

There are legitimate ways to get better value on a duct cleaning job and a few moves that look like savings but aren’t.

Combine Services on One Visit

Dryer vent cleaning, air handler cleaning, and duct cleaning share mobilization and setup time. Scheduling them together costs less than booking three separate visits. On a CleanRun job, the written quote will show each line item separately so the savings are visible, not implied.

Time It Between Peak Seasons

Denver’s HVAC industry runs hardest in May-June (pre-cooling season) and September-October (pre-heating season). Booking in late July, August, or the January-February window often means faster scheduling and, with some providers, off-peak pricing. CleanRun’s written pricing doesn’t fluctuate by season, but the scheduling wait time is noticeably shorter in those windows.

Use the Free Second Opinion

If you’ve already received a written quote from another Denver contractor, CleanRun will put a written price next to it at no cost. That comparison has a name: the Free Second Opinion on Any Written Estimate. Bring the competitor’s scope and number, and we’ll show you ours in writing before you make any decision. Call (720) 513-5159 to set that up – it costs nothing and takes about ten minutes.

Verify What’s Actually Being Quoted

When comparing quotes, confirm the process, not just the price. Ask: Is this negative-pressure extraction with rotary brush agitation, or a portable vacuum? Will I receive before-and-after photos of every duct run? Is the price written before any work starts, or is it an estimate that can change? Three quotes for duct cleaning in Denver can range from $79 to $649 because they are not quotes for the same service.

Don’t Defer Until a Problem Is Obvious

In Denver’s climate, systems that haven’t been cleaned in six to eight years often require two passes to clear compacted debris from duct walls near the plenum. A system cleaned every four to six years – the range most HVAC associations recommend for occupied homes with pets or allergy sufferers – stays at the lower end of the cost range because the debris load is manageable in a single visit.

The $79 Duct Cleaning Offer: What It Means in Denver

This deserves its own section because Denver homeowners encounter this offer constantly – on mailers, on Nextdoor, on Google search results. The $79 or $99 whole-house duct cleaning special exists in every city, and Denver is no exception.

Here is what that price reflects: a technician carrying a portable shop-vac or low-CFM trailer unit who connects to one or two registers, generates noise, and departs. The ducts may look cleaner at the registers. The debris 15 feet into the duct run is undisturbed. No camera inspection, no before-and-after record, no written price for any scope beyond the promotional price.

The issue isn’t the low entry price – it’s that the low price is not a price for the complete job. The documented pattern in Denver and nationally is that the $79 offer becomes the opening for an in-home upsell: mold identification (often without any lab test), “biohazard” alerts, mandatory sanitizing treatments, and coil cleaning that doubles or triples the original number – quoted verbally, after the technician is already inside. Denver homeowners who’ve experienced this describe it consistently: the final bill was 4-6x the coupon price, and there is no documented record of what was actually done.

CleanRun’s positioning on this is straightforward. The written price comes first, every time, before a panel comes off. That’s Haven Standard Clause 1, and it’s not a marketing phrase – it’s the operating standard on every job since 2013.

What a Professionally Documented Job Looks Like

Because CleanRun has photographed the interior of every duct run on every job since 2013 – across 52,000+ homes served – the before-and-after record is a consistent product, not a feature added for difficult customers. Here is what that documentation shows Denver homeowners in practice:

• A camera image of the supply plenum (the main distribution chamber off the air handler) before cleaning, showing accumulated debris, lint, or in older Denver systems, collapsed fiberglass liner sections.
• Camera images of representative duct runs at the first elbow from the plenum – where debris concentrates due to airflow direction changes – and at the register end.
• Post-cleaning images of the same points, showing duct wall condition after rotary brush agitation and negative-pressure extraction.
• A written job record noting duct material, condition at inspection, any findings requiring follow-up (disconnected sections, visible moisture, damaged liner), and the scope of work completed.

If a duct run shows a finding the technician cannot resolve in the cleaning visit – a disconnected flex duct section in a finished ceiling, for example, which is more common in Denver’s older Hale and Montclair neighborhood stock than in newer builds – that finding appears in the job record with a separate written quote for repair. The 365-Day Done Right Promise covers the cleaning work; the repair quote gives the homeowner a decision, not a surprise.

Permit and Code Considerations in Denver

Standard residential air duct cleaning in Denver does not require a permit. Duct cleaning is a maintenance service, not a mechanical alteration. If cleaning reveals that repair or replacement of duct sections is needed, and that work involves modifying or extending the duct system, Denver’s Building and Inspection Services department may require a mechanical permit depending on the scope. CleanRun identifies any such conditions in the written job record and clarifies permit requirements before any repair work is quoted or scheduled. For most cleaning-only jobs, no permit is involved.

FAQs: Air Duct Cleaning Cost in Denver

How much does air duct cleaning cost in Denver in 2026?

Air duct cleaning in Denver costs between $299 and $649 for most single-family homes, with the average job landing around $375-$450. Larger homes with 25 or more vents, zoned HVAC systems, or significant debris loads can reach $650-$850. Those numbers assume a full negative-pressure extraction process with rotary brush agitation – not a coupon-priced portable vacuum visit. Call (720) 513-5159 for a written quote specific to your home’s system size and vent count.

Is it cheaper to clean ducts in winter or summer in Denver?

Scheduling flexibility is better in mid-winter (January-February) and late summer (July-August), when HVAC contractor demand drops between heating and cooling peaks. CleanRun’s written pricing doesn’t vary by season, but you’ll typically get a faster appointment in those windows. If you’ve been putting off scheduling, late January is one of the easiest times to get a Denver duct cleaning done with minimal wait.

How long does air duct cleaning take on a Denver home?

Two to four hours is the realistic range for a properly done job on a typical Denver single-family home. Homes with 20 or fewer vents and accessible ductwork generally run two to three hours. Systems with 25+ vents, finished basement runs, or heavy debris loads from never having been cleaned can run four hours or more. A job quoted at 45 minutes to an hour is not the same process – the physics of negative-pressure extraction and rotary brush agitation don’t compress to that timeline on a full residential system.

Does duct cleaning actually help air quality in Denver?

Yes, with a specific answer: duct cleaning removes accumulated particulate matter – dust, pet dander, pollen, and in Denver homes affected by smoke events, fine carbon particles – from supply and return duct surfaces. The EPA notes that duct cleaning has not been shown to prevent health problems as a standalone measure but acknowledges that visible mold, vermin, or significant debris loading are reasons to clean. In Denver’s specific context, homes that ran HVAC systems during the 2021 Marshall Fire smoke event or subsequent Front Range smoke episodes have documented particulate accumulation that cleaning removes. The before-and-after photo record makes that removal visible rather than theoretical.

What’s included in a CleanRun duct cleaning job?

Every CleanRun job includes a written price before work starts (Haven Standard Clause 1), negative-pressure extraction through the full supply and return duct system using Rotobrush and Nikro equipment, rotary brush agitation on all accessible duct runs, and a documented photo record of every duct run before and after – delivered to the homeowner as a standard part of the job record. The 365-Day Done Right Promise covers the work in writing: if something isn’t right within 365 days, CleanRun makes it right. Add-on services like dryer vent cleaning, sanitizing, or HVAC component cleaning are quoted separately and presented as choices, not included without disclosure in the base price.

How often should Denver homeowners clean their air ducts?

Every four to six years is the range most HVAC trade organizations cite for occupied single-family homes. Denver homeowners with pets, allergy sufferers in the household, or homes that experienced wildfire smoke infiltration should treat four years as the practical ceiling. Homes that have never been cleaned – including newer builds in Central Park or Stapleton where construction dust was never cleared post-build – should schedule an initial cleaning and then establish a regular interval from that baseline. A CleanRun technician will note the debris load in the written job record so you have a documented baseline for scheduling the next visit.

Key Takeaways

• Denver air duct cleaning runs $299-$649 for most homes, averaging $375-$450 on standard 11-20 vent systems.
• Vent count, system age, debris load, and access difficulty drive pricing more than square footage alone.
• Denver-specific factors – altitude-driven particulate accumulation, wildfire smoke infiltration, and post-construction debris in newer neighborhoods – can push jobs toward the higher end of any range.
• A written price before any work starts is the minimum standard. If a quote isn’t in writing before the technician begins, it’s not a price – it’s an opening number.
• Before-and-after photo documentation of every duct run is the difference between knowing the work was done and being told it was.
• The 365-Day Done Right Promise means the job is accountable in writing, not subject to manager review.
• Free Second Opinion on any written estimate from another Denver contractor – call (720) 513-5159, bring the competitor’s scope and number, and get CleanRun’s written price next to it at no cost.

Get a Written Price for Your Denver Home

If you’re ready to get a specific number for your home’s system – not a range, a written price for your vent count, your duct layout, and your service address – call CleanRun Air Duct Cleaning Near Me in Aurora, CO at (720) 513-5159. Every call is answered by a live person. The written quote comes before any scheduling commitment, before any technician visits, and before any work begins. That’s not a policy subject to exceptions – it’s how every job has been done since 2013.

If you want to compare that number against a quote you’ve already received, bring it. The Free Second Opinion is available at no cost, and the CleanRun number will be in writing next to the competitor’s. You can also visit our home page to learn more about the full scope of services, credentials, and the H.A.V.E.N. Standard that governs every job CleanRun touches in the Denver metro.

Tomas Reyes and the CleanRun team serve Denver neighborhoods from Capitol Hill and Congress Park to Cherry Creek, Stapleton, Green Valley Ranch, and the surrounding metro. Every job gets the same written price, the same documented photo record, and the same 365-day accountability – whether it’s a 900 sq ft condo in Baker or a 4,000 sq ft home in Hilltop.

Pricing reflects the Denver market as of 2026. Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Aurora, serving Denver since 2013. CleanRun our Air Duct Cleaning services offers free estimates – call (720) 513-5159.