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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AfterFast, Reliable Duct Repair & Sealing Across Greenwood Village
Duct repair and sealing in Greenwood Village typically runs $340-$890 per system, with most multi-zone homes requiring work on two or three independent systems rather than one. Our crews are dispatched from the Denver office and carry the equipment to seal metal trunk lines, replace collapsed flex duct, and pressure-test repairs on-site. Call (719) 259-4520 for a written estimate before any work begins.
We’ve worked in Greenwood Village since 2013, and the pattern is consistent: a 4,200 sq ft home off Belleview Avenue with three air handlers, a finished basement with its own return run, and flex duct original to the 1987 build that’s sagging behind the drywall. The homeowner feels it as “some rooms never get warm” or “the basement smells musty.” The real problem is usually hidden in the duct run itself, not the furnace.
Why CleanRun Air Duct Cleaning Parker Is Greenwood Village’s Preferred Duct Repair & Sealing Company
Greenwood Village homeowners research before they call. They check licenses, read equipment lists, and ask whether they’ll get photos of work they cannot see. We’ve served over 52,000 homes since 2013, every one with a written price delivered before a panel came off and a documented photo record delivered after. That standard applies to every job in Greenwood Village, from a single register reseal to a full three-system flex duct replacement in The Preserve.
Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Tomas Reyes, who leads CleanRun, established the H.A.V.E.N. Standard in 2013 precisely because the duct cleaning industry operated on verbal quotes and vanish-after-payment service. Greenwood Village customers get the technician’s name before arrival, license number published on every proposal, and the 365-Day Done Right Promise in writing on every invoice. If the work is not right, we make it right. Not a policy subject to manager approval. A written guarantee.
Dispatch and scheduling are coordinated from our Denver office, but crews serve Greenwood Village locally with the parts and equipment to complete most repairs in one visit. We stock mastic sealant, insulated flex duct, sheet metal fittings, and collars for the common duct sizes found in DTC-era homes. No waiting on a parts run to Aurora.
Our Duct Repair & Sealing Services in Greenwood Village
Duct Sealing with Mastic Sealant
Metal duct joints in Greenwood Village’s 1970s-1990s systems were originally sealed with fabric tape or minimal mastic. After thirty years of thermal cycling, that sealant dries and cracks. We apply professional-grade mastic sealant (not tape) to every accessible joint, collar, and plenum connection, then pressure-test the trunk line to verify the seal holds under operating conditions. Mastic remains flexible, fills irregular gaps, and outlasts any tape product by decades. A typical mastic sealing job on one system in Greenwood Village runs $340-$520.
Flex Duct Repair and Replacement
Original flex duct in Greenwood Village homes has reached end of life. The plastic liner becomes brittle, the insulation compresses, and the wire helix sags between supports. We see this constantly in the large executive homes near Orchard Road and The Preserve, where flex runs of forty feet or more feed second-floor zones or finished basements. Our crew removes the failed section, installs new insulated flex duct with proper support spacing, and seals the connections with mastic and mechanical fasteners. Flex duct repair on one run typically costs $280-$450; full replacement of a zone’s flex trunk runs $580-$940.
Metal Duct Repair and Custom Fabrication
Some Greenwood Village homes use galvanized sheet metal trunk lines with flex branch takeoffs. When the metal corrodes at the humidifier bypass, cracks at the plenum connection, or suffers damage during renovation, we fabricate replacement sections on-site. Our equipment includes Nikro and Abatement Technologies negative-pressure containment systems, so metal grinding and cutting happens without contaminating the living space. Metal duct repair ranges from $180 for a localized patch to $670 for a custom plenum rebuild.
Duct Insulation and Air Leak Repair
Uninsulated or poorly insulated duct in Greenwood Village’s unconditioned attic spaces loses heated air in winter and cooled air in summer. More critically, leaks in the return side pull unfiltered air from the attic, garage, or crawl space into the system. We identify these leaks with blower-door-assisted duct blaster testing, seal with mastic, and reinsulate with formaldehyde-free duct wrap. Air leak repair with insulation on one system typically runs $420-$780.
Here’s what matters for Greenwood Village specifically: these homes are large, and “one system” is rarely the whole house. A 5,200 sq ft home near Boston Street might have a basement air handler, a main-floor system, and a third unit serving the second story. An estimate that quotes one blended price for “the house” hides the actual scope. Our Duct Repair & Sealing team prices per system, per trunk line, with the count verified on-site before the written price is delivered.
What happens when you call
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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.
BeforeAfterTrusted Brands We Service in Greenwood Village
CleanRun technicians carry professional-grade equipment from trade-recognized brands customers can verify independently: Rotobrush agitation and camera systems for duct interior inspection, Honeywell and Aprilaire whole-house humidifier components (including the bypass collars and distribution manifolds we replace when mold has colonized the supply duct), and Nikro and Abatement Technologies negative-pressure extraction units. We stock common humidifier pad sizes and bypass fittings for Greenwood Village’s high concentration of Aprilaire 600 and Honeywell HE360 installations, so repairs that involve the humidifier-duct interface don’t wait on parts.
Common Duct Repair & Sealing Problems We See in Greenwood Village Homes
- Collapsed flex duct behind finished basement walls. The original 1980s flex was supported every four feet; over decades, supports fail and the duct sags, then crimps at the elbow. Homeowners notice weak airflow to basement offices or guest suites. We trace the run with a camera, open minimal drywall, and replace the failed section with properly supported insulated duct.
- Mold colonization at the whole-house humidifier bypass. Nearly universal in Greenwood Village’s DTC-era homes, these humidifiers introduce moisture directly into the supply duct. When the pad is neglected, sustained humidity feeds mold growth that spreads several feet into the sheet metal before any odor reaches the registers. We remove the contaminated duct section, treat the plenum, and reinstall with a new bypass collar.
- Disconnected return runs in multi-zone systems. With three independent air handlers, a single disconnected return in the basement system pressurizes the utility room and pulls unfiltered air from the garage or crawl space while the upstairs zones overwork to compensate. Pressure testing identifies which trunk is compromised without dismantling the entire network.
- Original tape-sealed joints dried and leaking in attic trunk lines. Greenwood Village’s low humidity and extreme temperature swings in unconditioned attics accelerate tape adhesive failure. We remove the old tape, clean the joint, and apply mastic sealant that remains flexible from -20°F to 250°F.
Pricing for Duct Repair & Sealing in Greenwood Village, CO
| Service | Typical Range in Greenwood Village |
|---|---|
| Mastic sealing, one system | $340-$520 |
| Flex duct repair, single run | $280-$450 |
| Flex duct replacement, full zone | $580-$940 |
| Metal duct repair, localized | $180-$340 |
| Metal plenum rebuild/custom | $480-$670 |
| Air leak repair with insulation, one system | $420-$780 |
| Multi-system whole-house package (typical 3-system home) | $1,240-$2,180 |
These ranges reflect Greenwood Village’s specific housing stock: larger homes, more systems per home, and longer duct runs than newer suburbs. A 2,800 sq ft home in Lone Tree with one system and accessible basement ductwork sits at the lower end. A 5,400 sq ft home near Belleview with three systems, finished basement, and attic trunk lines requiring insulation sits at the higher end. Every estimate includes a written price per system, agreed before work starts under Haven Standard Clause 1. No per-vent pricing. No add-ons after the van arrives.
We also offer a Free Second Opinion on any written estimate from another company. Bring their quote; we put our number next to it in writing.
We Also Serve Cities Near Greenwood Village
CleanRun crews work throughout the southeast metro corridor, including Greenwood Village and neighboring Parker, Stonegate, The Pinery, and Lone Tree. Each community gets the same written-price-first standard and documented photo record, with pricing adjusted for local housing stock and system complexity.
Serving Greenwood Village, CO - Our Local Coverage Area
We’re based in the Greenwood Village 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 - Duct Repair & Sealing in Greenwood Village
Greenwood Village homes built during the DTC boom average 3,000-6,000+ sq ft with multi-zone systems, meaning most jobs involve two or three independent air handlers rather than one. The original flex duct is now 30-50 years old, often sagging or partially collapsed behind finished walls, and the whole-house humidifiers common here introduce mold issues not found in newer construction. Call (719) 259-4520 for a written estimate that counts your systems and prices each one separately.
Signs include weak airflow to specific rooms (especially basement offices or second-story bedrooms), temperature differences of more than four degrees between zones, or a musty odor that intensifies when the system runs. The definitive check is a camera inspection of the duct run, which we perform as part of every estimate. We show you the image before proposing any work.
Yes, and it’s a recurring issue in Greenwood Village. When the humidifier pad or reservoir is neglected, sustained moisture enters the duct run and mold colonizes the sheet metal starting at the bypass collar. We inspect this interface on every job, replace contaminated duct sections, and can install a new bypass with proper drainage slope. The Aprilaire and Honeywell components we stock fit most local installations.
Every CleanRun job concludes with a Documented Photo Record: before-and-after images of every duct run accessed, the written scope of work signed by the technician, pressure test results where applicable, and the 365-Day Done Right Promise on the invoice. You receive these as standard deliverables, not upon request. Haven Standard Clause 5: Documented Completion.
Sealed ducts reduce the infiltration of unfiltered air from attics, crawl spaces, and wall cavities, which matters when you’re running HVAC continuously during smoke events. However, sealing alone does not upgrade filtration; we assess whether your system can handle a higher-MERV filter without airflow restriction. The combination of sealed ducts and appropriate filtration is what keeps fine particulates out of the living space during Front Range smoke season.
Call (719) 259-4520 to schedule a free estimate. A live person answers every call, and you’ll receive a written price before any work begins. Every job includes the Documented Photo Record and the 365-Day Done Right Promise, backed in writing.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Greenwood Village since 2013.