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 Lakewood
Duct repair and sealing in Lakewood, Colorado typically runs $280-$680 for most residential jobs, with camera inspection and written pricing completed before any work starts. Our crews dispatch from the Denver office and carry Rotobrush and Nikro equipment configured for the specific duct systems found in Lakewood’s 1950s-1970s housing stock. Call (720) 799-2292 for a written estimate - no “call for a quote” games, just a flat price delivered on paper before a single panel comes off.
We’ve been working in Lakewood since 2013, and the patterns here are distinct from anywhere else in metro Denver. The city sits at roughly 5,400 feet elevation, immediately at the base of the Jefferson County foothills, which puts western neighborhoods like Applewood and Green Mountain directly in the path of smoke and fine particulates that drain down from mountain communities like Evergreen and Conifer during wildfire season. That exposure, combined with low humidity that keeps dust and ash lighter and suspended longer, creates a unique stress on duct systems. Add fifty to seventy years of original ductwork in the ranch-home tracts, and you’ve got conditions we don’t see in Aurora or Thornton. Our Duct Repair & Sealing team documents every run with before-and-after photography, so you can see exactly what was found and what was fixed.
Why CleanRun Air Duct Cleaning Denver Is Lakewood’s Preferred Duct Repair & Sealing Company
We’ve served more than 52,000 homes since 2013, and a significant share of those have been in Lakewood’s western neighborhoods. The feedback we hear most often from homeowners in Applewood and Green Mountain isn’t about speed - it’s about the photo record. Customers want to see the 3-inch debris build-up at the first elbow, the degraded fiberglass liner shedding glass fibers into the supply air, the gap in the plenum seam that was pulling attic air into the bedroom ducts. We show them, in writing and in photographs, before we recommend a single repair.
Every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. The license number is published on this page, not buried in a footer. We operate under the H.A.V.E.N. Standard, which means written pricing before work starts - always, on every job, no exceptions - and a 365-Day Done Right Promise backed in writing. If the work isn’t 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 Lakewood locally and carry parts inventory for the Honeywell and Aprilaire components common in local HVAC systems. Response time to Lakewood is typically same-day or next-day for standard appointments, though we don’t manufacture urgency - duct sealing is a scheduled job, and the quality of the documentation matters more than the speed of the truck.
Our Duct Repair & Sealing Services in Lakewood
Duct Sealing
Leaky ducts in Lakewood homes don’t just waste energy - they pull in the exact contaminants the foothills deliver. In Green Mountain split-levels with attic duct runs, we regularly find plenum seams and branch connections leaking so badly that the system is drawing 130-degree attic air mixed with wildfire ash into the supply stream. Our duct sealing protocol starts with a pressure test to quantify the leakage, then mastic application at every joint, seam, and penetration. Mastic is a water-based sealant that remains flexible for decades, unlike tape that dries and fails. In Lakewood’s low-humidity environment, mastic cures properly and holds. We photograph every sealed joint before closing access panels.
Flex Duct Repair
Flex duct, the insulated flexible tubing common in additions and retrofits throughout Lakewood, fails differently than metal. The plastic inner liner cracks, the insulation wrap compresses, and the wire helix collapses - especially in crawl spaces and attics where temperature swings are severe. We’ve replaced crushed flex duct in Belmar-area townhomes where the original installer left sagging runs that collected condensation (even in dry Lakewood, brief condensation events happen) and debris. Our flex duct repair includes proper support strapping, sealed connections to metal trunk lines with mastic, and verification that the new run maintains its rated diameter through the full length. No kinks, no compression, no air loss.
Metal Duct Repair
Original galvanized steel trunk-and-branch systems in Applewood’s 1958-1968 ranch grid are the most common metal ductwork we encounter in Lakewood. These systems weren’t designed for the airflow demands of modern HVAC equipment, and seventy years of thermal cycling has opened seams, loosened connections, and degraded any original sealant. The distinctive failure mode in this neighborhood is fiberglass interior liner delaminating from the metal shell - a problem we address with source removal and mastic sealing of exposed joints, not agitation tools that would shred the remaining liner and spread glass fibers through the house. When the liner is too degraded, we refer for abatement and repair the bare metal trunk after.
Mastic Sealant Application
Mastic is the standard we apply on every Lakewood duct sealing job, and there’s a reason tape alone doesn’t pass our protocol. Duct tape - even the foil-faced variety marketed for HVAC - dries and fails within years in Colorado’s climate. Mastic, applied with a brush or caulking tool at every longitudinal seam, transverse joint, and penetration, remains flexible and maintains its seal through decades of thermal expansion and contraction. We specify mastic for Lakewood’s temperature swings: summer attic temperatures hitting 140°F, winter nights below zero, and the constant low-humidity stress that brittleizes lesser materials. Every mastic application is photographed for the job record.
Duct Insulation
Duct insulation in Lakewood serves two purposes: thermal efficiency and condensation control. In foothills-facing homes with long attic or crawl-space runs, uninsulated or degraded insulation allows heat gain in summer and heat loss in winter that the HVAC system can’t overcome. We install new fiberglass duct wrap or replace flex duct with properly insulated product, secured with mechanical fasteners and sealed with mastic at all vapor-barrier laps. In Green Mountain homes with original asbestos-containing wrap, we halt work and refer to abatement - no exceptions, no shortcuts.
Air Leak Repair
Air leaks in duct systems are often invisible to homeowners but obvious to our pressure-testing equipment. A typical Lakewood home loses 20-30% of conditioned air to leaks before it reaches the registers. We locate leaks with calibrated fan testing and smoke pencils, then repair with the appropriate method: mastic for metal seams, proper connectors and support for flex duct, or full section replacement when damage is too extensive. The repair is verified with a second pressure test, and both readings go into your written job record.
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 Lakewood
Our equipment roster includes Rotobrush and Nikro agitation and extraction systems, Honeywell and Aprilaire air quality components, and Abatement Technologies negative-pressure hardware - all professional-grade tools you can verify independently before agreeing to a price. We stock common repair parts for Lakewood’s most frequently encountered systems, including flex duct connectors, mastic, and register boots, so most repairs are completed in a single visit without waiting for parts orders. For specialized components, our Denver office maintains next-day supply relationships with regional distributors.
Common Duct Repair & Sealing Problems We See in Lakewood Homes
- Fiberglass liner degradation in Applewood’s 1958-1968 ranch grid. The original galvanized trunk-and-branch systems in this neighborhood were built with fiberglass interior liner that has now reached end of life. The liner delaminates and sheds glass fibers into the supply airstream - a failure mode tied to that specific build-out, not to Lakewood as a whole. Camera inspection reveals the damage before any cleaning or sealing begins.
- Wildfire smoke and ash infiltration through leaky duct systems. Lakewood’s position at the base of the foothills puts western neighborhoods in the direct path of drainage winds carrying particulates from mountain fires. Leaky return ducts and plenum seams pull this contaminated air into the system, where low humidity keeps particles suspended and recirculating far longer than in humid climates.
- Asbestos-containing duct insulation in pre-1980 Green Mountain and Applewood homes. Original duct wrap or mastic tape from this era may contain asbestos. Our technicians are trained to recognize suspect materials and halt work immediately, referring to licensed abatement before any repair or cleaning proceeds. This is non-negotiable under Haven Standard safety protocols.
- Original sheet-metal seams opened by seventy years of thermal cycling. Lakewood’s rapid 1950s-1970s expansion produced thousands of homes with ductwork that has never been professionally sealed. Longitudinal seams on trunk lines, branch take-offs, and plenum connections leak conditioned air into attics and crawl spaces, while pulling in unconditioned, contaminated air through return leaks.
Pricing for Duct Repair & Sealing in Lakewood, CO
A typical duct sealing job in Lakewood runs $280-$450 for a single system with accessible ductwork in basement or crawl space. Flex duct repair, including replacement of damaged sections with properly supported new material, ranges $180-$340 per run. Metal duct repair with mastic sealing of accessible seams runs $320-$680 depending on system size and access difficulty. Camera inspection, included in our standard assessment, identifies the specific failure modes before we quote - no guesswork, no per-vent pricing games, no $79 coupon that balloons once the van is in your driveway.
Factors that affect cost in Lakewood: attic versus basement access (attic work in summer adds time), the extent of fiberglass liner degradation requiring abatement referral, and whether asbestos-containing materials are encountered. Every job gets a written price before work starts - Haven Standard Clause 1 - and a Free Second Opinion on any competitor’s written estimate. Bring their quote; we’ll put our number next to it in writing.
| Service | Typical Range in Lakewood |
|---|---|
| Duct sealing (single system, accessible) | $280-$450 |
| Flex duct repair (per run) | $180-$340 |
| Metal duct repair with mastic sealing | $320-$680 |
| Camera inspection and assessment | Included with service |
| Free Second Opinion on written estimate | No cost |
We Also Serve Cities Near Lakewood
CleanRun crews work throughout metro Denver, including Lakewood, Denver, Englewood, Greenwood Village, and Thornton. Each city’s housing stock and contamination patterns differ - Denver’s older Victorians present different duct challenges than Lakewood’s ranch tracts - and our assessments account for those differences. Dispatch is coordinated from our Denver office, with local routing optimized for your area.
Serving Lakewood, CO - Our Local Coverage Area
We’re based in the Lakewood 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 Lakewood
No, not without first determining the liner’s condition. At a 1962 ranch off Applewood’s Ellsworth blocks, our tech ran a camera inspection down the original galvanized trunk and found the fiberglass interior liner delaminating and blowing glass fibers past the registers. We sealed the failing branch joints with mastic, re-taped accessible plenum seams, and referred the degraded liner for abatement rather than running agitation tools through it. A follow-up NADCA-standards clean under negative pressure pulled the loose debris out of the supply and return ducts without spreading fibers through the house. If your liner is intact, we can proceed with source removal and sealing. If it’s actively shedding, we halt and refer. Call (720) 799-2292 for a camera inspection - estimates are free.
Because the source of the dust is often leakage, not just accumulation. At 5,400 feet elevation, Lakewood’s low humidity keeps Rocky Mountain dust and wildfire ash lighter and suspended longer, so it recirculates through supply and return ducts more aggressively than in humid, lower-altitude cities. If your ducts leak - and most pre-1980 systems do - the system pulls in new contamination from attic, crawl space, or wall cavities faster than cleaning can remove it. Sealing the leaks with mastic stops the influx. Without sealing, you’re paying to clean the same air over and over. Call (720) 799-2292 and we’ll pressure-test your system to show you the leakage rate in writing.
No. Fogging deposits chemicals on duct surfaces but does not remove the biological material or the debris that feeds it. In Lakewood’s dry climate, true mold growth in ducts is less common than in humid regions - what we more often find is dust mite debris, wildfire ash, and degraded fiberglass particles. The fix is source removal (physical extraction under negative pressure) plus sealing the leaks that introduce contaminants. Fogging is the duct-cleaning equivalent of spraying air freshener in a dirty room. We don’t sell it. Call (720) 799-2292 for an assessment based on what your camera inspection actually shows.
A camera inspection reveals structural failures that no amount of cleaning can fix: separated flex duct, collapsed runs, degraded fiberglass liner, asbestos-containing insulation, and active leaks at plenum seams. In Lakewood’s 1950s-1970s housing stock, we find these conditions in roughly one-third of homes that have never had professional duct assessment. The camera shows you - and us - exactly what we’re dealing with before we quote any work. The photo record becomes part of your job documentation. Without it, you’re paying for cleaning that may be inappropriate or insufficient for the actual condition of your system. Call (720) 799-2292 to schedule.
Yes, significantly, by stopping your system from pulling contaminated outside air through leaks in the return ductwork. Green Mountain homes are particularly exposed to downslope drainage winds that carry smoke and fine particulates from foothills fires directly into western Lakewood. Sealed ducts can’t prevent all infiltration - some smoke enters through windows, doors, and building envelope gaps - but they eliminate the major pathway of active suction through leaky return systems. Combined with proper filtration at the air handler, mastic-sealed ducts reduce wildfire particle recirculation by 60-80% in most homes we’ve tested. The improvement is measurable and documented in your before-and-after photo record. Call (720) 799-2292 for a pressure test and written estimate.
Ready for a documented duct assessment in Lakewood? Call CleanRun Air Duct Cleaning Denver at (720) 799-2292. We’ll deliver a written price before any work starts, photograph every duct run before and after, and back the work with our 365-Day Done Right Promise. No coupons, no fogging upsells, no per-vent games - just the actual condition of your ducts, in writing and in photographs, and a flat price to fix what needs fixing.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Denver, serving Lakewood since 2013.