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 Littleton
Duct repair and sealing in Littleton typically runs $280-$650 for most residential systems, with flex-duct replacement and full mastic re-sealing of an older ranch home reaching the upper end of that range. We dispatch to Littleton from our Denver office, and most scheduled jobs are completed in a single visit with the written price agreed before any panel comes off.
We’ve worked the 80123 and 80128 corridors since 2013, and the pattern is consistent: Littleton’s canyon-mouth geography loads duct systems with debris and combustion ash that flatland suburbs simply don’t see. Our Duct Repair & Sealing team treats this as a local climate condition, not a sales pitch. When we seal a Littleton system, we’re sealing against both air loss and the re-entrainment of wildfire particulate that ordinary house dust doesn’t describe accurately.
Call (719) 259-4520 for a written estimate. Estimates are free, and the price we put in writing is the price on the invoice.
Why CleanRun Air Duct Cleaning Parker Is Littleton’s Preferred Duct Repair & Sealing Company
CleanRun is independently owned and operated under the Haven Standard, established in 2013, with 52,000+ homes served across the metro area. Every one of those jobs started with a written price and concluded with a Documented Photo Record of every duct run. Littleton homeowners receive the same deliverable: before-and-after images of the inside of their supply and return lines, delivered as part of the standard job record.
Our crews know the Columbine ranches with their original galvanized trunk lines, the longer flex runs in Highlands Ranch-border subdivisions, and the rural properties off Wadsworth and Santa Fe where unpaved access roads mean dust loading that changes maintenance intervals. We don’t guess at what’s inside your plenum. We photograph it.
Haven Standard Clause 3: Verified Crews. Every technician is background-checked, uniformed, and identified by name before arrival. The 365-Day Done Right Promise applies in Littleton exactly as it does everywhere else: if the work is not right, we make it right, backed in writing on every job.
We also offer a Free Second Opinion on any written estimate. Bring a competitor’s quote; we put our number next to it in writing.
Our Duct Repair & Sealing Services in Littleton
Mastic Sealant Application
Original 1970s duct tape on Columbine-corridor galvanized trunk lines has dried out and released. We find this on nearly every ranch home in the 80123 zip code. Mastic sealant, reinforced with mesh at high-stress joints, is the only repair that lasts. We apply it to every metal-to-flex transition, every trunk-line seam, and every return-air plenum joint. The work is photographed before and after. A typical mastic re-sealing of a 1970s Littleton ranch system runs $320-$480.
Flex Duct Repair & Replacement
Flex duct collapses at bends where static pressure is highest, and Littleton’s elevation forces systems to work harder than comparable lower-altitude cities. On rural properties and in older subdivisions alike, we replace collapsed or torn flex runs with new insulated flex, properly supported to prevent sagging. Two collapsed runs to rear bedrooms is a standard repair on the 1970s stock. Flex-duct repair or replacement in Littleton typically runs $180-$340 per run, depending on length and access.
Metal Duct Repair
Galvanized sheet-metal trunk lines in Littleton’s older housing stock have absorbed 40-50 years of thermal cycling. Seams separate. We repair with sheet-metal patches, drive-screw fastening, and mastic finishing, not tape. The repair is pressure-tested before we close. Metal duct repair on a Littleton ranch home typically runs $260-$520, depending on the extent of separation and whether the trunk is accessible from basement or crawl space.
Air Leak Repair & Duct Insulation
Leaks into unconditioned crawl spaces and attics waste conditioned air and pull in combustion ash, pollen, and dust from unpaved rural roads. We pressure-test the system, locate leaks with smoke pencil and thermal inspection, then seal and insulate. For Littleton properties near open land, this is often the difference between a system that runs constantly and one that reaches setpoint. Air leak repair with insulation runs $380-$650 for a typical residential system.
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 Littleton
Our equipment roster includes Rotobrush, Nikro, and Guardsman units, professional-grade tools customers can look up independently before agreeing to a price. We stock common flex-duct diameters, mastic compounds, and mesh reinforcement locally, so Littleton repairs aren’t delayed by parts runs to Denver. The Nikro negative-pressure extraction units we deploy on every job are the same models specified by Abatement Technologies for residential source removal. We name the equipment because the Haven Standard requires transparency, not because it sounds impressive.
Common Duct Repair & Sealing Problems We See in Littleton Homes
- Failed original duct tape at every joint. The 1970s ranch stock in Columbine and South Suburban corridors used cloth-backed duct tape that dries to powder in Colorado’s low humidity. Supply and return ducts leak into crawl spaces instead of delivering air. We find this on the first camera inspection, every time.
- Wildfire ash embedded in duct walls. Canyon-funneled smoke from Jefferson County open-space fires deposits gray, fine-grained soot that behaves differently from ordinary dust. A Chinook wind event surges airflow and re-entrains it through the entire supply network. Leak repair without source removal just redistributes the particulate.
- Collapsed flex at high-static-pressure bends. Longer flex-duct runs in 1990s-2000s subdivisions trap debris across wide surface areas, and the bends nearest the air handler collapse first. The homeowner feels weak airflow to the far registers and assumes the system is undersized. Usually, it’s a collapsed run.
- Rural outbuilding systems drawing unfiltered air. Detached shops and barns on Littleton’s rural fringe often have flex or PVC supply lines pulling directly from dusty environments. The duct loading is severe, and the repair interval is shorter than for the main house.
Pricing for Duct Repair & Sealing in Littleton, CO
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts. Here is what duct repair and sealing costs in the Littleton market:
| Service | Typical Range |
|---|---|
| Mastic sealant re-sealing (full system) | $320-$480 |
| Flex duct repair / replacement (per run) | $180-$340 |
| Metal duct repair (patch and seal) | $260-$520 |
| Air leak repair with insulation | $380-$650 |
| Full system assessment with camera inspection | $0 (included with estimate) |
Factors that move a job within these ranges: access (crawl space versus basement), number of failed joints, extent of wildfire-ash buildup requiring source removal before sealing, and whether outbuilding runs are included. We do not quote per-vent pricing. One flat price per system, agreed in writing, before any work begins. Call (719) 259-4520 for your specific number.
We Also Serve Cities Near Littleton
Our crews work Littleton and the surrounding communities regularly: Englewood to the north, Lone Tree to the southeast, Parker to the east, and Denver metro-wide. Dispatch and scheduling are coordinated from our Denver office; crews serve Littleton locally with the same equipment, the same written pricing, and the same photo documentation standard.
Serving Littleton, CO - Our Local Coverage Area
We’re based in the Littleton 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 Littleton
Every 18-24 months for rural Littleton properties, versus the 3-5 year interval typical in flatter, paved suburbs. Unpaved access roads and open land generate dust and pollen loading that accelerates debris accumulation, and the 5,350-foot elevation forces more air cycles annually. Wood heat adds combustion particulate that compounds the loading. Call (719) 259-4520 and we’ll assess your specific property’s interval based on road surface, heat source, and camera inspection findings.
Cleaning removes debris; it does not restore failed seals. Original 1970s duct tape dries out and releases in Colorado’s low humidity, and every separated joint leaks conditioned air into unconditioned spaces while pulling in new debris. We were called to a 1974 ranch on the Columbine corridor near the 80123 zip line where the homeowner had sealed off an unfinished basement and couldn’t understand why the upstairs registers still pushed grit; camera inspection found failed original duct tape at nearly every metal-to-flex transition in the supply and return runs. Our tech re-sealed the joints with mastic and mesh, replaced two collapsed flex runs to the rear bedrooms, and followed with source removal and HEPA filtration on a Nikro unit - the homeowner said the basement shop and the far bedrooms finally drew the same air. Call (719) 259-4520 for an assessment of your seal condition.
Yes, and we recommend it. Rural outbuilding systems often pull unfiltered air from dusty environments, and the flex or PVC supply lines we encounter on Littleton’s fringe properties load severely. The repair interval is shorter than for the main house, but the same standards apply: written price first, photo documentation of every run, and the 365-Day Done Right Promise. Call (719) 259-4520 to schedule.
Yes. Wood stoves and inserts produce finer, more acidic particulate than gas furnaces, and the combustion ash embeds in duct walls differently. In Littleton, this combines with wildfire soot from canyon-funneled smoke to produce a gray, gritty residue that standard furnace filters don’t capture. Sealing without source removal traps this particulate inside the system, where Chinook pressure swings re-entrain it. We photograph the difference so you can see it. Call (719) 259-4520 for an inspection.
MERV 11-13 for Littleton’s conditions, changed every 60-90 days during fire season and every 90 days otherwise. Higher is not always better: MERV 16 restricts airflow on older systems and can collapse flex runs already stressed by age. The goal is capturing wildfire ash and road dust without overloading the blower. We note the recommended filter spec on every written job record. Call (719) 259-4520 if you’re unsure what your system can handle.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Parker, serving Littleton since 2013.