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 Highlands Ranch
Duct repair and sealing in Highlands Ranch typically costs $280-$650 for most homes, with flex duct repairs running $180-$340 per run and full-system mastic sealing averaging $450-$850. We’re dispatching crews to Highlands Ranch daily from our Denver office, and we know the neighborhood layouts well enough to quote accurately over the phone. Call (720) 513-5159 for a written estimate before any work starts.
Highlands Ranch is one of Colorado’s largest master-planned communities, with the overwhelming majority of its housing stock built between the late 1980s and mid-2000s using similar production-builder templates. That means thousands of homes are simultaneously hitting the 25-35 year mark where original flex ductwork connections degrade and three decades of high-altitude dust accumulate. Many are original-owner households that have never had a single duct cleaning since move-in. The duct layouts are predictable, uniform, and our technicians have documented the same failure patterns across Northridge, Westridge, and the newer sections south of Wildcat Reserve Parkway.
Our Duct Repair & Sealing team treats every Highlands Ranch job as a documented audit, not a vacuum visit. We photograph every run before and after, and we quote in writing under Haven Standard Clause 1 before touching a single panel.
Why CleanRun Air Duct Cleaning Aurora Is Highlands Ranch’s Preferred Duct Repair & Sealing Company
We’ve served over 52,000 homes since 2013, and Highlands Ranch represents one of our most concentrated service areas. The production-built consistency of the housing stock means our crews arrive knowing what they’ll find: Richmond American and Shea Homes floor plans with near-universal finished basements, flex duct runs through basement ceilings, and three decades of accumulated debris in supply lines that have never been opened.
Our Highlands Ranch customers receive the same deliverables as every CleanRun client: a written price before work begins, a Documented Photo Record of every duct run showing what was found and what was corrected, and the 365-Day Done Right Promise backed in writing on every invoice. Technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and they’re identified by name before arrival.
Scheduling is coordinated from our Denver office, with crews serving Highlands Ranch locally. We don’t subcontract. The technician who quotes the job performs the work, and the photo record is delivered as a standard job deliverable, not an upsell.
We also offer a Free Second Opinion on any written estimate from a competitor. Bring us another company’s quote; we’ll put our number next to it in writing, with line-item detail.
Our Duct Repair & Sealing Services in Highlands Ranch
Flex Duct Repair
Highlands Ranch homes contain more linear flex duct per square foot than comparable Denver suburbs because of those finished basements. The extra footage runs through basement ceilings and framed walls, and after 30+ years the foil-and-plastic connections between flex sections and rigid trunk lines separate or sag. In a 1994 Westridge two-story with a finished basement, the homeowner booked a routine clean but our camera inspection found a separated flex-to-trunk connection behind the basement drywall, blowing conditioned air into the ceiling cavity; we re-secured the collar and sealed the joint with mastic, then completed source removal on the supply and return ducts under negative pressure with HEPA filtration. For ongoing maintenance, consider our Dryer Vent Cleaning in Highlands Ranch to keep your full ventilation system clear. Flex duct repair in Highlands Ranch typically runs $180-$340 per run, depending on access and whether the section requires full replacement or reconnection.
Mastic Sealant Application
Mastic is a water-based sealant we brush or spray onto duct joints, plenum connections, and register boots. It remains flexible after curing, which matters in Highlands Ranch’s climate of dry winters and temperature swings that cause metal ductwork to expand and contract. We apply mastic to every accessible joint during a sealing service, and we photograph the application as part of the Documented Photo Record. A full-system mastic seal for a typical Highlands Ranch home runs $450-$650 for accessible basement and main-floor trunk lines.
Air Leak Repair
Air leaks in Highlands Ranch homes follow predictable patterns: separated flex collars behind basement drywall, crushed runs where storage items pressed against ceiling-mounted ductwork, and gaps where original builders used tape instead of mastic at plenum connections. Tape dries and fails. We find these leaks with a combination of visual inspection, camera survey, and pressure testing where indicated. Air leak repair is typically bundled with mastic sealing; isolated leak repair runs $220-$380 depending on location and access requirements.
Metal Duct Repair
Some Highlands Ranch homes, particularly later builds in areas like BackCountry and Terrain, incorporate galvanized steel trunk lines with flex branch takeoffs. We repair dented or separated metal sections, replace failed dampers, and reseal plenum connections. Metal duct repair requires different tooling than flex work; our crews carry Rotobrush and Nikro equipment configured for both material types. Metal repairs in Highlands Ranch typically run $280-$520.
Duct Insulation
Basement ceiling runs in Highlands Ranch lose efficiency where insulation has compressed, torn, or pulled away from the duct exterior. We replace or supplement insulation on accessible sections, particularly where flex duct passes through unconditioned wall cavities. Duct insulation work runs $320-$580 for typical basement perimeter sections.
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 Highlands Ranch
Our equipment roster includes Rotobrush for mechanical agitation in flex duct, Nikro for negative-pressure extraction systems, and Honeywell and Aprilaire components for air quality integration. We don’t claim performance beyond manufacturer specifications, but we name the brands so Highlands Ranch homeowners can verify what we’re using before agreeing to a price. Parts for common Highlands Ranch HVAC configurations are stocked locally, so most repairs don’t require a return visit.
Common Duct Repair & Sealing Problems We See in Highlands Ranch Homes
- Separated flex connections behind finished basement drywall. In Northridge and Westridge sections, 1990s builds now have 30+ year old flex-to-trunk connections that have separated or sagged, recirculating conditioned air into wall cavities for years without the homeowner noticing. The camera finds it; mastic and mechanical reconnection fix it.
- Decades of accumulated debris in never-cleaned supply lines. Original-owner homes that have never had service often contain 2-4 inches of compacted dust at elbows and transitions. Highlands Ranch’s high-altitude, low-humidity air keeps fine particulates suspended longer, so they travel further before settling, creating deeper accumulation in long basement-ceiling runs.
- Wildfire smoke particle infiltration in poorly sealed systems. Front Range wildfire events since 2020 have pushed fine combustion particles directly into forced-air systems. Older flex runs without proper sealing continue recirculating these particles long after the smoke clears. Sealing the duct envelope is the only way to stop re-entrainment.
- Crushed or disconnected flex runs hidden behind framed walls. Basement storage, renovation work, or simple gravity over three decades can compress or detach flex sections. A routine cleaning becomes a duct-integrity audit when the camera reveals a run that’s been blowing into a ceiling cavity since the Clinton administration.
Pricing for Duct Repair & Sealing in Highlands Ranch, CO
| Service | Typical Range |
|---|---|
| Flex duct repair (per run) | $180 - $340 |
| Air leak repair (isolated) | $220 - $380 |
| Metal duct repair | $280 - $520 |
| Duct insulation (perimeter sections) | $320 - $580 |
| Full-system mastic sealing | $450 - $850 |
| Combined clean + seal + repair | $680 - $1,200 |
What moves a Highlands Ranch job toward the higher end: access difficulty behind finished basement ceilings, multiple separated connections requiring drywall access ports, or full flex section replacement versus simple reconnection. What keeps it lower: open basement ceilings, single-point repairs, and systems that have been maintained previously. We quote the exact scope in writing before starting; Haven Standard Clause 1 prohibits verbal estimates that change once work begins. Every Highlands Ranch customer receives the written price, the photo record, and the 365-Day Done Right Promise as standard deliverables. Call (720) 513-5159 for an exact quote on your home.
We Also Serve Cities Near Highlands Ranch
Our crews work daily across the south metro area, including Duct Repair & Sealing in Highlands Ranch as well as Aurora, Denver, Centennial, and Stonegate. Scheduling is coordinated from our Denver office with local dispatch to each community.
Serving Highlands Ranch, CO - Our Local Coverage Area
We’re based in the Highlands Ranch 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 Highlands Ranch
Expect a camera inspection to reveal separated flex connections, accumulated debris at elbows, and possibly crushed runs behind basement drywall. We’ll show you the photos, quote the repair scope in writing, and perform the work under negative-pressure extraction with HEPA filtration. Call (720) 513-5159 for a free estimate.
Conditioned air leaking into basement wall cavities doesn’t always register as a comfort issue upstairs, but it raises your energy bills and pressurizes spaces that shouldn’t be pressurized. The leaks are invisible until the camera goes in. We seal them with mastic and document the before-and-after pressure characteristics. Call (720) 513-5159 for an inspection.
Yes. At 5,800-6,000 feet with very low relative humidity, fine particulates remain suspended longer and travel further through your system before settling. This accelerates accumulation in long runs and means wildfire smoke particles circulate longer. Homes at this elevation typically benefit from more frequent duct integrity checks than lower, more humid markets. Call (720) 513-5159 to assess your system’s condition.
We stop the cleaning, photograph the disconnection, and present a written repair quote before proceeding. The homeowner decides whether to repair, clean only the accessible sections, or reschedule. No work beyond the original scope happens without written authorization under Haven Standard Clause 1. Call (720) 513-5159 to discuss options.
Often yes, but not always. We access flex duct through existing registers and basement ceiling access panels where builders provided them. If the camera reveals a separated connection with no access point, we’ll quote a minimal access port rather than hidden damage left unrepaired. The photo record shows exactly why access is needed. Call (720) 513-5159 for a camera inspection.
Ready to see what’s inside your ducts? Call CleanRun at (720) 513-5159 for a written estimate on duct repair and sealing in Highlands Ranch. We’ll quote the full scope before any work begins, document every run with before-and-after photos, and back the result with our 365-Day Done Right Promise. Haven Standard Clause 1: Written Price Before Any Work Starts. Every job. No exceptions.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Highlands Ranch since 2013.