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.
Before
After
Before
After
Before
AfterAir Duct Cleaning in Centennial, CO
HVAC cleaning in Centennial typically runs $400-$800 for a full system, with air quality and sanitizing add-ons ranging $150-$450 depending on scope. At this elevation on the Front Range, the combination of 25-45 year old ductwork and recurring wildfire smoke infiltration means most Centennial homes need more than a surface vacuum. Call (720) 315-7291 and we’ll put a written price in front of you before any panel comes off.
Why Centennial Homes Are Different
Centennial sits at roughly 5,700 feet in semi-arid Arapahoe County, where persistently low humidity keeps fine particulate suspended longer before it gets pulled into return vents. The city was built almost entirely during the 1978-1998 suburban boom as unincorporated county land, creating one of the metro’s densest concentrations of ranch and two-story tract homes now 25-45 years old. Many still run original fiberglass duct board systems that are delaminating internally, shedding fibers into the airstream.
Colorado’s escalating wildfire smoke seasons add a second pressure. July through October infiltration events deposit fine ash deep into forced-air systems that already cycle nearly year-round due to dramatic diurnal temperature swings. In the 1980s ranch subdivisions near Smoky Hill Road and Arapahoe Road, attic flex-duct runs were installed with minimal support hangers. After 35-40 years those runs sag at mid-span, creating low-point traps where cottonwood fluff, wildfire ash, and construction debris compact into plugs. Newer suburbs like Highlands Ranch or Castle Rock simply don’t show this failure mode at the same frequency.
Our Main Centennial Services
Centennial homeowners call us most often for these three services, each with its own dedicated page.
Air Duct Cleaning in Centennial
Full negative-pressure extraction of every duct run, register, and return, with a documented photo record of interior conditions before and after. In Centennial’s aging tract homes, we regularly find original fiberglass duct board with delaminated liner that requires careful handling to avoid further fiber release. Air Duct Cleaning in Centennial covers our complete scope for these systems.
Dryer Vent Cleaning in Centennial
Complete vent line inspection and rotary brushing from appliance to termination, with airflow testing before and after. Centennial’s cottonwood population and dry climate accelerate lint compaction in long vent runs, especially in two-story colonials with roof terminations. Dryer Vent Cleaning in Centennial details our process and pricing.
Duct Repair & Sealing in Centennial
Repair of disconnected or sagging flex-duct runs, sealing of plenum and collar leaks with mastic, and full system pressure testing. The sagging mid-span traps we find near Smoky Hill Road often require physical re-support and section replacement rather than simple sealing. Duct Repair & Sealing in Centennial explains our repair criteria.
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.
BeforeAfterHVAC Cleaning in Centennial
Full HVAC cleaning in Centennial addresses the evaporator coil, blower assembly, condenser, and air handler, the components that actually move and condition air through your duct network. In this city’s 25-45 year old housing stock, these components often carry debris loads from decades of operation plus recent wildfire ash cycles that standard filter changes never reach. Our HVAC Cleaning hub explains the full system approach.
Evaporator Coil Cleaning
Signs you need it
Ice buildup on refrigerant lines, weak airflow from registers, or cooling that can’t keep up during August afternoons when smoke haze traps heat.
What it costs in Centennial
Evaporator coil cleaning typically runs $180-$340 as a standalone service, or $120-$220 when bundled with full system cleaning.
How we do it
We remove the access panel, apply foaming cleaner to the coil fins, rinse with low-pressure water to avoid fin damage, and photograph the coil condition before and after.
Blower Cleaning
Signs you need it
Vibration or noise from the air handler, uneven heating across rooms, or dust puffing from registers when the system cycles on.
What it costs in Centennial
Blower cleaning and balancing runs $150-$280, with motor bearing inspection included.
How we do it
We remove the blower assembly, clean the squirrel cage and housing with compressed air and solvent, check amp draw and balance, and reinstall with new gaskets.
What HVAC Cleaning Costs in Centennial
| Item | Typical range in Centennial |
|---|---|
| Full system HVAC cleaning (coil, blower, condenser, air handler) | $400-$800 |
| Evaporator coil only | $180-$340 |
| Blower cleaning and balance | $150-$280 |
How do I know my HVAC was actually cleaned?
Every HVAC cleaning includes a Documented Photo Record of the coil, blower, and condenser before and after, delivered as part of your job record. You see what the technician saw.
Can HVAC cleaning help with wildfire smoke smell?
Removing ash and particulate from the coil and blower eliminates the reservoir that recirculates smoke odor, though persistent smell may need additional sanitizing.
Air Quality & Sanitizing in Centennial
Air quality and sanitizing in Centennial targets the biological and particulate load that accumulates in 25-45 year old duct systems, compounded by wildfire smoke infiltration that standard filtration misses. Our Air Quality & Sanitizing hub covers the full range of treatments for these conditions.
Mold Treatment
Signs you need it
Musty odor when the system runs, visible spotting on registers, or allergy symptoms that worsen after rain or snowmelt when attic humidity spikes briefly.
What it costs in Centennial
Spot mold treatment runs $200-$400; whole-system application runs $350-$650 depending on duct count and access.
How we do it
We apply EPA-registered antimicrobial through the duct network under negative pressure, with dwell time per manufacturer specification, then verify with post-treatment photo documentation.
UV Light Installation
Signs you need it
Recurring microbial growth after cleaning, or household members with respiratory conditions aggravated by circulating biological material.
What it costs in Centennial
UV-C lamp installation runs $300-$550 including lamp, ballast, and electrical connection to the air handler.
How we do it
We mount the lamp downstream of the coil with sight-glass access, wire to the blower circuit for automatic operation, and verify UV output with a radiometer.
What Air Quality & Sanitizing Costs in Centennial
| Item | Typical range in Centennial |
|---|---|
| Mold treatment (spot) | $200-$400 |
| Mold treatment (whole system) | $350-$650 |
| UV light installation | $300-$550 |
Does UV light actually work in dry climates like Centennial?
UV-C lamps sterilize surfaces they directly illuminate, including the evaporator coil and drain pan, regardless of ambient humidity; they do not treat air passing through the duct.
How often should sanitizing be repeated?
After initial treatment, most Centennial homes benefit from re-evaluation every 2-3 years, or after significant wildfire smoke events that introduce new biological loading.
Brands We Service in Centennial
We stock parts and service equipment from Honeywell, Aprilaire, and Abatement Technologies, with Nikro negative-pressure machines on every truck. Most common components are available same-day for Centennial appointments. See our brands for the full roster.
Pricing for Air Duct Cleaning in Centennial, CO
| Service | Typical range in Centennial |
|---|---|
| Full HVAC cleaning | $400-$800 |
| Evaporator coil cleaning | $180-$340 |
| Blower cleaning | $150-$280 |
| Condenser cleaning | $120-$220 |
| Air handler cleaning | $140-$260 |
| Heat exchanger cleaning | $160-$300 |
| Mold treatment (spot) | $200-$400 |
| Mold treatment (whole system) | $350-$650 |
| Bacteria sanitizing | $180-$350 |
| Odor removal treatment | $150-$300 |
| UV light installation | $300-$550 |
| Air purifier installation | $400-$900 |
Prices move up in Centennial when systems haven’t been serviced in 10+ years, when attic access requires crawl-board work, or when wildfire ash has compacted into dense residue requiring extended contact time. Every price is written and agreed before work starts, per Haven Standard Clause 1. No exceptions.
Neighborhoods We Serve in Centennial
We schedule Centennial appointments with arrival windows confirmed the morning of service, typically within 24-48 hours of call.
- Willow Creek
- Piney Creek
- Homestead in the Willows
- Southshore
- The Hills at Piney Creek
Service Area - Cities Near Centennial
CleanRun dispatches crews to Littleton, CO, Englewood, CO, Highlands Ranch, CO, and Cherry Hills Village, CO from our Denver office, with scheduling coordinated to minimize wait times across the metro south corridor.
Serving Centennial, CO - Our Local Coverage Area
We’re based in the Centennial 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 in Centennial
No permit is required for standard residential duct cleaning or HVAC maintenance in Centennial; permits apply only to duct modification or new installation, which we handle separately when needed.
Most Centennial appointments are available within 24-48 hours; we do not maintain artificial scheduling scarcity. Call (720) 315-7291 for current availability.
Centennial’s many HOA-governed communities typically do not restrict indoor duct cleaning; we carry proof of insurance and licensing for any HOA that requests documentation.
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 Centennial Customers Say
"Flat price agreed up front, no per-vent add-ons at the end. That was the whole reason I did not call the coupon company."
- Suzanne B."Thorough job on the ducts and the dryer vent. Left the house clean and the paperwork was clear."
- Rafael I."The before and after photographs of each run are the reason I used them. You cannot argue with what came out of the return."
- Marguerite O.