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 Stonegate
Most Stonegate homes were built from the same handful of floor plans during the 1990s and early 2000s Douglas County boom, which means their duct systems are aging in unison - original flex duct, original mastic tape, original builder-grade seals, all hitting the same failure threshold at the same time. Duct repair and sealing in Stonegate typically runs $280-$650 for standard residential work, with most jobs completed in a single visit and every price delivered in writing before we touch a panel. We’re familiar with the specific model types off North Pinery Parkway and throughout the Stonegate Village retail corridor, and our crews dispatch from our Denver office to reach Stonegate properties without the scheduling delays that come from outlying contractors. Call (720) 513-5159 for a written estimate.
Why CleanRun Air Duct Cleaning Aurora Is Stonegate’s Preferred Duct Repair & Sealing Company
We’ve worked enough Stonegate homes to recognize the floor plans before we walk through the door. The 1990s-era two-stories near Stonegate Parkway and the early-2000s builds closer to E-470 share the same duct layouts, the same sagging flex runs between joists, and the same dried mastic at plenum connections. That pattern recognition matters. A technician who knows where the undersized return-air trunk sits in a particular model doesn’t waste time hunting for the problem.
Our Stonegate customers leave documented reviews mentioning the photo records we deliver - the before-and-after images from inside every duct run, included as standard on every job since we started in 2013. Haven Standard Clause 3: Verified Crews means every technician is background-checked, uniformed, and identified by name before arrival. Scheduling is coordinated from our Denver office, and we don’t book Stonegate jobs with vague “sometime next week” windows. You get a specific arrival time.
The 365-Day Done Right Promise applies here exactly as it does everywhere we work - if the repair fails or the seal doesn’t hold, we make it right in writing, not as a favor subject to manager approval. Our Duct Repair & Sealing team has documented over 52,000 homes with written prices and photo records; Stonegate properties make up a significant share of our Douglas County work.
Our Duct Repair & Sealing Services in Stonegate
Duct Sealing
Stonegate’s original builder-grade mastic tape at plenum and trunk connections has dried and cracked after 25-30 years of Front Range temperature swings and single-digit winter humidity. We remove the failed material and re-seal with fresh mastic sealant, then pressure-test the system to verify the seal holds. In Stonegate’s specific model types, we often find the same leak pattern at the same connection point - a function of the community’s repeated floor plans, not random wear.
Flex Duct Repair
The flex duct runs in Stonegate’s production homes sag between joists where they weren’t properly supported during original construction. Those low points collect compacted debris - original drywall dust from the 1990s build, plus 25 years of Palmer Divide wind-borne particulate - and the inner liner degrades, shedding material directly into your airflow. We re-support the runs, repair or replace separated sections, and verify with camera inspection. Our field crew uses Rotobrush agitation equipment and Nikro HEPA-filtered negative-pressure extraction (source removal using suction that captures debris rather than redistributing it) to clean what the repair exposes.
Metal Duct Repair
Where Stonegate homes have galvanized trunk lines - typically the main supply and return plenums - we repair separated seams, replace corroded sections, and re-seal with mastic rated for the temperature extremes this elevation sees. Metal duct at 5,900 feet expands and contracts more aggressively than in lower suburbs, so seam failure is more common here than in Aurora or Denver proper.
Duct Insulation
Stonegate’s temperature swings and low winter humidity degrade duct insulation faster than in moister climates. We replace deteriorated wrap with new insulation sized to the run, sealed at all joints, and verified with thermal imaging where appropriate. Proper insulation matters more at this elevation, where winter nights drop below zero and summer afternoons hit the 90s.
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 Stonegate
Our equipment roster includes Rotobrush agitation systems, Nikro HEPA-filtered extractors, and Honeywell and Aprilaire components for integrated air-quality solutions. We stock common flex-duct diameters, mastic compounds rated for Colorado’s UV and temperature extremes, and replacement register boots that match the builder-grade originals still found throughout Stonegate. That local inventory means we don’t order parts mid-job and ask you to wait. Every brand we name can be verified independently - we don’t use equipment we can’t document.
Common Duct Repair & Sealing Problems We See in Stonegate Homes
- Dried mastic at plenum connections. The original builder-grade sealant applied in 1998-2003 has crystallized in Stonegate’s dry winters. We find separated tape at the air handler plenum on roughly half the homes we inspect in this community, re-opening leaks that were never properly sealed at construction.
- Sagging flex duct with debris pockets. Between-joist runs in Stonegate’s two-story models sag where support straps failed, creating low points packed with original construction dust and 25 years of accumulated particulate. The flex liner degrades and sheds into airflow.
- Undersized return-air trunk choking airflow. Specific Stonegate floor plans - repeated across the community - have a return trunk that’s undersized for the square footage. After two decades, that choke point concentrates dust loading and starves the air handler, producing the stuffy second floors and musty registers homeowners report.
- Wildfire smoke particulate embedding in duct liners. Colorado’s July-September smoke seasons push PM2.5 deep into Stonegate’s tightly sealed homes. Fine particulate adheres to the degraded inner surface of flex duct and re-enters circulation every time the system cycles.
Pricing for Duct Repair & Sealing in Stonegate, CO
A typical duct sealing job in Stonegate runs $280-$450 for a single system with standard access. Flex duct repair - re-supporting sagging runs, replacing separated sections, and resealing connections - typically falls between $340 and $580 depending on linear footage and attic accessibility. Metal duct repair on trunk lines runs $380-$650 where corrosion or seam separation requires section replacement. Duct insulation replacement is quoted per linear foot, with most Stonegate two-story homes falling in the $420-$720 range for complete supply and return wrap.
What moves the number: attic accessibility (blown insulation versus walkable floor), the extent of original mastic failure, whether the undersized return trunk requires modification, and how many register boots need resealing. We deliver one flat price per system, agreed in writing before work starts - Haven Standard Clause 1. No per-vent pricing. No add-ons after the truck arrives. Every estimate includes the Documented Photo Record as a standard deliverable, not an extra charge.
Call (720) 513-5159 for a written estimate. Estimates are free, and we offer a Free Second Opinion on any competitor’s written quote.
We Also Serve Cities Near Stonegate
Our crews work throughout the southeast metro corridor, including Stonegate and surrounding communities. We regularly schedule duct repair and sealing in Aurora, Denver, Centennial, and Greenwood Village from the same Denver-based dispatch office that handles Stonegate appointments. The same written pricing, same documented photo records, same 365-Day Done Right Promise apply across all service areas.
Serving Stonegate, CO - Our Local Coverage Area
We’re based in the Stonegate 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 Stonegate
Yes - 20-30 years is exactly when Stonegate’s original builder-grade flex duct and mastic seals hit their failure threshold, all at once across this community. The original construction materials weren’t designed for three decades of Front Range temperature swings and single-digit humidity. Sealing now prevents the air handler from working against leaks that waste 20-30% of conditioned air. Call (720) 513-5159 for a written estimate - we’ll show you what the camera finds.
The smell comes from two predictable sources in this community: degraded flex-duct liner shedding material into airflow, and compacted debris pockets in sagging runs that harbor moisture and microbial growth. Stonegate’s repeated floor plans mean we find the same sag point and the same liner degradation in the same model types. The musty odor typically clears after we re-support the runs, replace degraded sections, and remove the debris with HEPA-filtered extraction. We document the source with before-and-after photos.
We’re not typically called to new construction in Stonegate - this community built out decades ago. But for homeowners in newer nearby developments, construction debris in ducts is real: drywall dust, wood particulate, and fastener scraps left by trades during build-out. The builder’s rough clean doesn’t remove material from inside duct runs. If you’re in a newer build elsewhere in Douglas County, we recommend camera inspection before the first heating season. In Stonegate specifically, our work addresses 25-year accumulation, not construction residue.
At 5,900-6,000 feet near the Palmer Divide, Stonegate sees wider daily temperature swings, lower winter humidity, and higher UV exposure than Aurora or Denver proper. Sealants dry and crack faster. Metal duct expands and contracts more aggressively. And high-velocity Front Range winds push more particulate into home systems than lower-elevation communities experience. Our mastic compounds and insulation materials are specified for these conditions, not generic national stock.
Sealing verified leaks typically reduces HVAC runtime 15-25% in Stonegate homes with the plenum and trunk separation we commonly find. But sealing alone won’t fix the undersized return-air trunk that chokes airflow in specific Stonegate floor plans - that requires duct modification, not just sealant. We identify which problem you have during camera inspection, quote the appropriate repair, and document results with pressure testing. Call (720) 513-5159 for a written estimate with no obligation.
Ready to see what’s inside your ductwork? Call (720) 513-5159 to schedule a free written estimate. Our technician will camera-inspect your system, identify the specific failure pattern your Stonegate floor plan produces, and deliver one flat price per system before any work begins. Every job includes a Documented Photo Record of every duct run and the 365-Day Done Right Promise in writing.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Aurora, serving Stonegate and the southeast metro corridor since 2013.