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 Highland Park
Duct repair and sealing in Highland Park, IL typically costs $280-$650 for most residential jobs, with full system mastic sealing on older homes running $450-$900 depending on duct accessibility and condition. Our crews are scheduled from our Chicago office and serve Highland Park homes directly, carrying the equipment to repair riveted sheet-metal trunks, reseal flex branch connections, and address the moisture-driven failure patterns that Lake Michigan humidity and ravine topography create here. Call (224) 344-8881 and we’ll put a written price in front of you before any panel comes off.
Why CleanRun Air Duct Cleaning Elk Grove Village Is Highland Park’s Preferred Duct Repair & Sealing Company
We’ve worked in Highland Park since 2013, and the photo records from those jobs tell a consistent story: original galvanized ductwork, often with riveted seams from the 1920s through 1950s, tied into newer flex branches from successive remodels. Our Duct Repair & Sealing team documents every run before touching it, so homeowners see exactly what we found and exactly what changed.
Our technicians are background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise applies to every Highland Park job in writing, not as a verbal assurance. We also offer a Free Second Opinion on any written estimate from another company, no cost, no obligation. Tomas Reyes built this practice on the principle that a customer should have evidence, not promises.
Our Duct Repair & Sealing Services in Highland Park
Metal Duct Repair
Highland Park’s concentration of pre-WWII homes, especially in the Ravinia district and along streets like Dean Avenue and those bordering the bluff, means we encounter original riveted galvanized trunks regularly. These metal ducts fail at seams under negative pressure, and decades of remodels often leave new flex branches poorly coupled to the original trunk. We repair the seam with mastic and mesh reinforcement, re-clamp or replace flex collars, and photograph the repair so you can verify the work. A typical metal duct repair in Highland Park runs $320-$580.
Mastic Sealant Application
Mastic is the correct material for sealing sheet-metal seams in older duct systems, not duct tape. In Highland Park homes with original or early-replacement ductwork, we brush-apply mastic to riveted joints, plenum connections, and register boots, then embed fiberglass mesh at stress points for structural integrity. The Lake Michigan humidity here makes proper sealing critical: any gap that draws unconditioned attic or crawl-space air also draws moisture, accelerating corrosion and microbial growth. Mastic sealing for a full system in Highland Park typically ranges from $450-$750.
Air Leak Repair
Air leaks in Highland Park duct systems often occur where 1990s or 2000s remodels tied flex branches into original galvanized trunks, or where register boots have separated from drywall over decades of thermal cycling. We pressurize the system, locate leaks with smoke pencil or theatrical fog, then repair with appropriate materials: mastic for metal-to-metal, proper clamps and collars for flex connections, and mechanical fastening where boots have pulled free. Leak repair jobs in Highland Park generally fall between $280-$520.
Flex Duct Repair
Flex duct in Highland Park homes is often found in additions, finished basements, or attic runs from mid-century and later construction. The inner liner degrades, insulation compresses, and collars loosen. We replace damaged flex sections with new R-8 insulated duct, secure with tension straps and mastic, and verify with before-and-after photography. Flex duct repair in Highland Park typically costs $240-$440 per run.
Duct Insulation
Condensation on duct surfaces is a recurring issue in Highland Park’s humid environment, particularly in ravine-adjacent basement mechanical rooms where cold supply air meets persistently damp ambient conditions. We install closed-cell foam or fiberglass insulation with vapor barrier on exposed ductwork, reducing condensation that feeds mold and improves system efficiency. Duct insulation work in Highland Park ranges from $380-$680 depending on linear footage and accessibility.
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 Highland Park
Our equipment roster includes Rotobrush rotary systems for mechanical agitation inside duct runs, Nikro HEPA-filtered negative-pressure extractors, and Abatement Technologies containment gear for jobs where microbial growth requires isolation protocol. We don’t make performance claims beyond manufacturer specifications, but we do name what we use so Highland Park homeowners can verify it independently. Parts for common Highland Park systems are stocked for fast turnaround on repair jobs, and every piece of equipment is cleaned and inspected between appointments under Haven Standard Clause 2: Verified Tools.
Common Duct Repair & Sealing Problems We See in Highland Park Homes
- Failed mastic joints at remodel tie-ins. In homes where a 1990s kitchen expansion or second-floor addition tied new flex into a 1920s galvanized trunk, the original mastic has often hardened and cracked. We find these leaks with camera inspection and seal them properly.
- Mold on return-air boxes in newer furnaces. In ravine-adjacent Highland Park blocks, our techs routinely find mold colonies on return-air boxes even when the furnace is less than ten years old, because cold damp air pools in the topographic depressions and rides the return side year-round. This pattern is scarce a few miles west in flat Highwood or Deerfield.
- Shared dryer vent stacks in downtown Highland Park condos. Multi-unit buildings near the central business district often have vertical dryer vent stacks serving multiple floors. No single owner can fully service these, and lint accumulation creates fire risk for the entire stack. We coordinate with building management for full-stack cleaning and repair.
- Asbestos-wrapped plenums in pre-1950s homes. Highland Park’s housing stock includes original asbestos insulation on duct plenums. We do not disturb friable asbestos; when encountered, we document its location, seal around it, and refer homeowners to licensed abatement contractors before proceeding with adjacent repairs.
Pricing for Duct Repair & Sealing in Highland Park, IL
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 Highland Park’s market:
| Service | Typical Range in Highland Park |
|---|---|
| Single air leak repair (accessible) | $280-$380 |
| Metal seam repair with mastic and mesh | $320-$520 |
| Flex duct replacement per run | $240-$440 |
| Full system mastic sealing | $450-$750 |
| Duct insulation (per linear foot, exposed) | $12-$18 |
| Return-air box remediation with HEPA isolation | $480-$680 |
Factors that move the price: accessibility (crawl space versus open basement), extent of corrosion or mold requiring containment protocol, and whether asbestos abatement must be coordinated. Every estimate is free, written, and delivered before work begins. Call (224) 344-8881 for an exact quote on your Highland Park home.
We Also Serve Cities Near Highland Park
Our crews work throughout the North Shore and northwest Cook County, including Duct Repair & Sealing in Highland Park and surrounding communities: Deerfield, Northbrook, Glenview, and Arlington Heights. The same written-price protocol, documented photo record, and 365-Day Done Right Promise apply in every city we serve.
Serving Highland Park, IL - Our Local Coverage Area
We’re based in the Highland Park 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 Highland Park
The ravine topography and Lake Michigan humidity create a localized moisture environment that overrides equipment age. Cold, damp air pools in topographic depressions around ravine-adjacent homes, and that air is drawn continuously through the return side. Even a new furnace cannot compensate for a return-air box sitting in a humidity sink. We address this by sealing the plenum and surrounding ductwork to reduce infiltration, improving mechanical room ventilation where possible, and documenting moisture sources with photography. Call (224) 344-8881 for a camera inspection and written repair scope.
Yes, in most cases. Original galvanized trunks in Highland Park’s pre-WWII homes are often structurally sound but leaking at riveted seams and remodel tie-ins. We seal these with brush-applied mastic and fiberglass mesh reinforcement, a repair that preserves the original ductwork’s durability while restoring airtightness. Replacement is only necessary when sections are severely corroded or inaccessible. A typical Rivinia-area metal duct repair runs $320-$580 with written pricing before work starts.
The building association or management company typically holds responsibility for common exhaust infrastructure, but individual unit owners often need to initiate the conversation. We provide written inspection reports and photo documentation that condo boards can use to authorize full-stack service. Our crews have worked with multiple downtown Highland Park buildings to coordinate access, contain lint removal with negative-pressure extraction, and repair damaged stack sections. The service is quoted in writing per building, not per unit.
Yes, measurably. Highland Park’s relative humidity runs higher year-round than inland North Shore suburbs due to its position on Lake Michigan’s western bluff and the cooling effect of ravine corridors. This moisture loads the return side continuously and accelerates degradation of mastic seals and metal surfaces. We recommend inspection every three to four years for Highland Park homes with original or early-replacement ductwork, versus the five-year interval that suffices in drier climates. The inspection includes a written condition report and photo record at no charge.
We isolate the work zone with Abatement Technologies containment barriers, maintain negative pressure with Nikro HEPA-filtered extractors exhausting to the exterior, and seal registers in adjacent units when working in multi-family buildings. Our technicians are identified by name before arrival under Haven Standard Clause 3, and we coordinate access with building management to minimize disruption. The protocol is documented in your job record with before-and-after photography of every sealed or repaired run. Call (224) 344-8881 to discuss your building’s specific access and containment requirements.
Call (224) 344-8881 for a free estimate on duct repair and sealing in Highland Park. We’ll deliver a written price before any work begins, document every duct run with before-and-after photography, and back the work with our 365-Day Done Right Promise. No per-vent pricing. No bait-and-switch. Just documented evidence of what was found and what was fixed.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Highland Park since 2013.