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
AfterSupply Duct Cleaning in Littleton, CO
Our Air Duct Cleaning services remove debris, dust, and biological buildup from the duct runs that carry conditioned air from your HVAC system outward to every room in your home. In Littleton, where seasonal temperature swings push heating and cooling systems hard from October through March and again through July and August, those supply runs accumulate debris faster than most homeowners expect – and that debris travels directly into the living space every time the blower kicks on. A clean supply side means cleaner air delivery, more consistent room temperatures, and a system that isn’t fighting restriction every cycle.
CleanRun Duct Repair & Cleaning has used Video Inspection to photograph the inside of supply duct runs in Littleton homes since 2013. We put a written price in front of you before any panel comes off, and when the job is done, you receive a documented photo record showing the before and after condition of every run – not a verbal summary, an actual record. That’s the standard on every job, not an upgrade. If you’d like a written quote for your home, call us at (720) 315-7291. A live person answers every call.
Supply duct cleaning sits within the broader scope of Air Duct Cleaning in Littleton – if your return side also needs attention, or if you’re looking at a full-system clean, that page covers how the two sides of your duct system work together.
When You Need Supply Duct Cleaning
Not every home needs supply duct cleaning on the same schedule. These are the signs that the supply side of your system is due – or overdue.
- Visible dust discharge at registers. When you see a grey-brown puff at the register the moment the blower starts, that’s settled debris being dislodged from the duct wall and pushed into the room. In Littleton’s older stock neighborhoods like Columbine Valley and Bow Mar, we regularly find half-inch debris layers sitting in the bottom of horizontal supply runs that have been in service since the 1970s and 1980s.
- Uneven room temperatures across floors. Restricted supply runs don’t deliver air volume evenly. If your second floor stays five to eight degrees warmer than your main level during a Denver-area summer, a partially blocked supply trunk or branch run is a common cause worth ruling out before you call an HVAC tech to look at refrigerant charge or damper settings.
- Allergy or respiratory symptoms that worsen indoors. Littleton sits on the Front Range where spring winds carry significant particulate load, and homes built before 2000 often have duct systems that were never sealed to modern standards. Fine particles and biological matter (mold spores, dust mite debris, pet dander) lodge in supply duct interiors and re-enter living space continuously through the air stream.
- Recent renovation or construction work. Drywall dust, insulation fibers, and sawdust from a kitchen remodel or basement finish migrate into supply runs fast. We’ve pulled visible drywall compound out of supply elbows in homes where the contractor swore the registers were covered during the job. Photography at the first elbow doesn’t lie.
- Persistent HVAC filter loading between change intervals. If you’re replacing a MERV-11 filter every three weeks instead of every two to three months, some of that load is coming back through the supply side from duct interior surfaces, not just from the return air stream.
- The system has never been cleaned. If you purchased a Littleton home in the last five years and have no documentation that the supply ducts were ever cleaned, assume they haven’t been. We’ve opened supply trunks in homes built in the 1990s in South Littleton that contained the original construction debris – wood chips, tape scraps, joint compound – sitting alongside a decade of settled dust.
Our Supply Duct Cleaning Process
Every step below is the same whether your home has six supply runs or twenty-four. Nothing is skipped based on job size.
- Written scope and price before work begins. Tomas Reyes or one of our technicians walks your supply system, counts the runs, notes duct material (flex, rigid sheet metal, or fiberboard), documents any visible access restrictions, and hands you a written price. Under Haven Standard Clause 1, that price doesn’t change after you sign. There is no “we found more once we opened it up” adjustment at the end.
- Pre-cleaning photography at every supply run. Before a single piece of equipment is connected, we photograph the interior of each supply run using a camera probe. The image shows debris depth, material type, and any visible biological growth or damage. This is the baseline for your documented photo record – the before half of every before-and-after pair you’ll receive when the job is done.
- Negative-pressure containment at the air handler. We connect professional-grade negative-pressure extraction equipment – Nikro units are standard on most Littleton jobs – to the supply plenum (the main distribution box that feeds all your supply runs from the air handler). Negative pressure means the system draws air inward, so dislodged debris travels toward the collection unit rather than back into your living space. Registers in unworked rooms are temporarily sealed during this phase.
- Mechanical agitation through every supply run. Each supply branch and trunk is worked with rotary brush equipment – Rotobrush is our primary tool for flexible duct; rigid sheet metal runs get a brush head sized to the duct diameter. The brush breaks debris loose from duct walls and the negative-pressure system pulls it to collection. This is the step that separates documented duct cleaning from shop-vac noise: you can see what was dislodged in the collection container and in the post-cleaning photographs.
- Post-cleaning photography at every supply run. After mechanical cleaning and final extraction pass, we re-photograph each run at the same probe depth as the pre-cleaning image. You get a matched pair for every run. If a run photographs clean, the image shows it. If a section of flex duct is damaged internally or a rigid elbow has a condition that cleaning alone won’t resolve, the post image documents that too – and we tell you in writing what the next step would be.
- Job record delivery and 365-Day Done Right Promise confirmation. Your full documented photo record is delivered before the crew leaves – not emailed three days later. The 365-Day Done Right Promise is documented on your job record: if anything about the work is not right within 365 days of the job date, we make it right in writing. No manager approval required, no policy language about “normal wear.”
BeforeAfterSupply Duct Cleaning Pricing in Littleton
How Much Does Air Duct Cleaning Cost? (2026 Price Guide) - Littleton, CO: supply duct cleaning in Littleton typically runs between $280 and $620 for a standard single-family home, depending on the factors listed below. That range covers mechanical cleaning of every supply run, pre- and post-cleaning photography, written price before work starts, and the documented job record. Nothing in that scope is an add-on – it’s the job.
| Home Size / Duct Count | Typical Supply Duct Cleaning Range |
|---|---|
| Small home, up to 10 supply runs | $280 – $360 |
| Mid-size home, 11-18 supply runs | $360 – $490 |
| Larger home, 19-26 supply runs | $490 – $620 |
| Two-story or multi-zone system (per zone) | Add $80 – $140 per additional air handler zone |
What moves the price
- Duct material. Rigid sheet metal cleans faster and holds up to more aggressive agitation. Flex duct – common in Littleton homes built after 1995 – requires slower brush speeds and more careful probe insertion to avoid inner liner damage, which adds time.
- Access difficulty. Attic-run supply ducts in two-story homes in areas like Heritage Hills and Ken Caryl Ranch sometimes require additional access cuts to reach distal runs. Any access work needed is quoted in writing before it happens.
- Debris load and biological growth. A system that hasn’t been cleaned in fifteen years takes longer than one cleaned five years ago. If the camera shows heavy biological growth (visible mold colonies, not just dust) at any supply run, the scope expands and the price reflects it – in writing, before we proceed.
- Combined services. If supply duct cleaning is done alongside return duct cleaning or dryer vent cleaning on the same visit, the total cost per service typically runs lower than booking each separately, because mobilization and setup time is shared.
If you have a written estimate from another company, bring it. Under our Free Second Opinion policy, we put a written CleanRun number next to it so you can compare what’s included line by line. Call (720) 315-7291 to schedule.
Why the Documented Photo Record Matters in Littleton’s Market
Littleton homeowners have seen the $79 duct cleaning coupon. Most of those jobs involve a portable shop-vac at the register, no camera probe, and a verbal assurance that “everything looks good in there.” There’s no way to verify that claim because no baseline was ever established.
CleanRun has photographed supply duct interiors on every job since 2013 – that’s over 52,000 homes documented under the same standard. The photo record isn’t a premium feature; it’s how we prove the work was done. In Littleton specifically, where a significant number of homes were built in the 1980s and 1990s with duct systems that have never been touched, the before images regularly show debris accumulation that surprises homeowners who assumed their system was “probably fine.” The after images show what changed. That’s the whole point.
Technicians working under Haven Standard Clause 3 (Verified Crews) are background-checked, uniformed, and identified by name before arrival. You know who is coming into your home before they ring the doorbell.
Supply Ducts and Littleton’s Climate: What We Actually See
Littleton sits at roughly 5,350 feet. The Front Range geography creates dry winters with significant particulate load from wind events, and spring months that push heavy pollen and exterior dust into homes through every gap in the building envelope. Supply duct interiors in Littleton homes show a specific pattern we’ve documented repeatedly: the first two feet from the plenum collar tend to accumulate the heaviest load because that’s where air velocity drops as it spreads into branch runs, allowing larger particles to settle. In homes with older trunk-and-branch layouts common in neighborhoods like Columbine Knolls and Governor’s Ranch, that first elbow is often where debris consolidates into a partial restriction.
Winter heating cycles compound this. When a furnace runs for eight to ten hours a day from November through February, it moves a lot of air through a fixed duct interior. Any debris already present gets redistributed, and fine particles that settled during low-use months get pushed out into living space at higher concentrations during peak heating months. That’s the mechanical explanation for why some Littleton residents notice more dust on surfaces in January and February even with a clean filter in place.
Our home page outlines the full range of services we provide if you’re assessing what your system needs across multiple categories at once.
FAQs – Supply Duct Cleaning in Littleton
How much does supply duct cleaning cost in Littleton, CO?
Supply duct cleaning in Littleton runs between $280 and $620 for most single-family homes, depending on the number of supply runs, duct material (flex vs. rigid sheet metal), access difficulty, and debris load. That range includes the written price before work starts, mechanical cleaning of every run, pre- and post-cleaning photography, and the documented job record. Call (720) 315-7291 for a written quote specific to your home’s duct count – estimates are free, and the price you’re quoted is the price you pay.
What is a supply duct, and how is it different from a return duct?
Supply ducts carry conditioned air from the air handler outward to each room through registers (the vents you feel air coming out of). Return ducts pull room air back to the air handler to be conditioned again. They are separate systems inside your home’s duct network. Cleaning both matters, but supply duct cleaning is specifically the process of cleaning the air-delivery side – the runs that carry air into your living space. If you want to understand how the full system fits together, the Air Duct Cleaning in Littleton page covers both sides in detail.
Can supply duct cleaning improve airflow to specific rooms?
It can, when restricted airflow is caused by debris buildup in the supply run serving that room. Partial blockages from settled dust, construction debris, or collapsed inner liner in flex duct can reduce air delivery noticeably. Cleaning removes the debris, and the before-and-after photographs document what was present. That said, if a room’s airflow problem stems from a damper issue, undersized duct, or duct leak rather than debris, cleaning alone won’t resolve it – and we’ll tell you that in writing if the camera shows a condition beyond what cleaning addresses. No upsell, just the documented finding.
How often should supply ducts be cleaned in a Littleton home?
For most Littleton homes, every four to six years is a reasonable interval under normal conditions. Homes with pets, residents with asthma or significant allergies, recent construction or renovation, or duct systems that have never been documented should be assessed sooner. The right answer depends on what the camera shows at your first elbow – that image tells more about your system’s actual condition than any general schedule. If you have no documentation of prior cleaning, that’s the baseline: start there, photograph it, and build a schedule from what’s found.
Key Takeaways
- Supply duct cleaning covers the air-delivery side of your duct system – the runs that push conditioned air into each room.
- Pricing in Littleton runs $280-$620 for most homes, based on run count, duct material, and debris load. Written price before work starts, every time.
- CleanRun photographs every supply run before and after cleaning – that record is included in every job, not an upgrade.
- Littleton’s dry climate, altitude, and Front Range wind events create specific debris accumulation patterns, particularly at the first elbow off the plenum collar.
- The 365-Day Done Right Promise means if the work isn’t right, CleanRun makes it right – documented in writing on your job record.
- A free second opinion on any written competitor estimate is available at no cost – call (720) 315-7291 to arrange it.
Get a Written Quote for Supply Duct Cleaning in Littleton
If you’re ready to see what’s inside your supply runs – not guess, see – search Air Duct Cleaning Near Me in Littleton, CO and call CleanRun at (720) 315-7291. A live person answers every call. We’ll schedule a visit, put a written price in front of you before anything is touched, and hand you a documented photo record of every run when the job is done. That’s the standard, not the exception. Littleton homeowners deserve to know exactly what they’re paying for and exactly what was done. We’ve held that position since 2013, on every job, in every home.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Littleton, serving Littleton since 2013.