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 Mount Prospect
Duct repair and sealing in Mount Prospect typically runs $340-$890 for most homes, with full-system metal duct rebuilds reaching $1,200-$1,800 when original 1950s-1970s galvanized runs have failed. We’re usually on-site within 2-3 business days of your call, and every job starts with a written price before a single panel comes off. Call (708) 683-3974 to schedule.
Mount Prospect’s housing stock is what we see most: post-war ranches, split-levels, and two-story colonials built during the 1950s-1970s suburban boom, most with original galvanized sheet-metal duct systems still running through full basements. These ducts weren’t designed to last 70 years. After five decades of thermal expansion, vibration, and Cook County’s heavy heating and cooling cycles, the seams loosen, sections disconnect, and the fiberglass duct board some builders used in supply trunks turns brittle and friable. Our crews have worked the streets from Rand Road to Elmhurst Road, from the neighborhoods near Lions Park down to the Algonquin Road corridor. We know what these houses contain because we’ve opened enough of them.
Why CleanRun Air Duct Cleaning Chicago Is Mount Prospect’s Preferred Duct Repair & Sealing Company
We’ve served Mount Prospect homeowners since 2013, and our documented photo record - every duct run, before and after - is what brings repeat calls and referrals. The 365-Day Done Right Promise is backed in writing on every job, not buried in a policy manual.
Our reviews from Mount Prospect customers consistently cite the photo deliverable and the upfront written price as the reasons they chose us over competitors offering $79 coupons. One customer on Pine Street told us she showed our before-and-after images to her HVAC contractor, who confirmed the work he’d never seen documented that way by a duct company.
Dispatch and scheduling are coordinated from our Chicago office, but crews serving Mount Prospect are local to the northwest metro. We don’t send teams from Rockford or Joliet. That matters when you’re trying to coordinate around a workday or a child’s nap schedule.
We also know the local conditions: the O’Hare approach corridors, the airport construction dust, the particular way jet-traffic particulates load up in homes near Algonquin Road and Busse Road. This isn’t generic suburban ductwork. It’s Mount Prospect ductwork, and it fails in specific ways we’ve documented across hundreds of visits.
Our Duct Repair & Sealing Services in Mount Prospect
Duct Sealing
Most Mount Prospect homes we enter are leaking 20-35% of conditioned air into basements, crawlspaces, and wall cavities. The original sealant on those galvanized seams has dried and cracked. Our duct sealing protocol starts with a pressure test to quantify the loss, then mastic sealant application at every joint, register boot, and plenum connection. Mastic is a water-based compound that remains flexible for decades - unlike foil tape, which degrades in 5-7 years. For a typical Mount Prospect ranch or split-level, duct sealing runs $340-$620. We photograph every sealed joint; the images are yours as part of the standard job record.
Metal Duct Repair
Original galvanized supply runs in Mount Prospect basements often show crushed sections behind joists, rust-out at low points where condensation pooled, or complete disconnection from the main plenum. In the Ranch-view neighborhood near Algonquin Road, our crew pulled a supply trunk disconnected from the main plenum at a 1962 split-level - the joint had been leaking 30% of the air into the basement for years. Camera inspection showed the original galvanized run crushed behind a joist and a 4-foot section of friable duct board shedding into the airstream; we removed the failing section, rebuilt the run with sealed metal, and mastic-sealed the plenum, restoring static pressure and airflow to the upstairs bedrooms. Metal duct repair in Mount Prospect typically ranges $480-$1,100 depending on linear feet and access.
Flex Duct Repair
Some Mount Prospect homes have flex duct additions from later HVAC retrofits, often poorly supported and sagging in attic or basement runs. Sagging flex creates turbulence and debris traps. We replace damaged flex with properly supported, insulated runs rated for the static pressure of your system. Flex duct repair runs $180-$340 per section in this market.
Duct Insulation
Uninsulated or degraded ductwork in Mount Prospect basements loses thermal energy rapidly during our six-month heating season and allows condensation during humid summer months. We install foil-faced fiberglass insulation at R-6 or R-8 value, sealed with mastic at all seams. Duct insulation for a typical Mount Prospect system runs $420-$780.
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 Mount Prospect
Our equipment roster includes Rotobrush agitation systems, Nikro negative-pressure extractors, and Honeywell air quality monitors - brands you can look up independently before agreeing to any work. We stock mastic sealant, galvanized fittings, and flex duct in common diameters so most Mount Prospect repairs don’t wait on parts. For controls and zoning components, we source Aprilaire dampers and relays. Every tool and material is named on your written scope before work begins, Haven Standard Clause 1.
Common Duct Repair & Sealing Problems We See in Mount Prospect Homes
- Disconnected or crushed original galvanized supply runs in full basements. These failures hide behind finished ceilings or joist bays, leaking heated air into unconditioned space for decades. Homeowners notice the upstairs bedrooms never warm up; the real problem is a trunk line dropping conditioned air into the basement instead.
- Brittle fiberglass duct board inside supply trunks that sheds fibers into the airstream. Standard agitation tools disturb this material, releasing particulates. We contain the area and typically recommend full replacement with sealed metal - not cleaning - when we find this condition.
- Loss of seal at the air handler plenum and return-air boot connections. Basement air, construction dust, and in Mount Prospect’s O’Hare-adjacent neighborhoods, fine black jet-exhaust particulate, gets drawn into the system and distributed through living spaces. The fix is mastic sealing at the source, not filter upgrades.
- Condensation damage at low points in galvanized runs. Cook County’s humid summers cycle moisture through these systems; without proper slope and drainage, water pools and rusts through from the inside out. We cut out the damaged section and rebuild with sealed replacement metal.
Pricing for Duct Repair & Sealing in Mount Prospect, IL
| Service | Typical Range in Mount Prospect |
|---|---|
| Duct sealing (whole system) | $340-$620 |
| Metal duct repair (per section/rebuild) | $480-$1,100 |
| Full supply trunk rebuild | $1,200-$1,800 |
| Flex duct replacement (per run) | $180-$340 |
| Duct insulation (whole system) | $420-$780 |
| Fiberglass duct board replacement | $620-$1,400 |
What moves the price: accessibility (finished basement ceilings add labor), linear feet of damaged duct, and whether we find friable duct board requiring containment protocols. Every estimate is free, written, and delivered before work starts - no exceptions. Bring a competitor’s quote; under Haven Standard Clause 4, we provide a Free Second Opinion in writing at no cost. Call (708) 683-3974.
We Also Serve Cities Near Mount Prospect
Our crews work regularly in Mount Prospect and the surrounding communities: Des Plaines, Elk Grove Village, Glenview, and Northbrook. The same written-price protocol, documented photo record, and 365-Day Done Right Promise apply across every service area. If you’re on the border between towns, we’ll confirm coverage when you call.
Serving Mount Prospect, IL - Our Local Coverage Area
We’re based in the Mount Prospect 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 Mount Prospect
They can often be cleaned if the metal is intact and the seams are sealed. In Mount Prospect, we find that roughly 60% of 1960s ranches need at least partial repair - disconnected boots, crushed sections behind joists, or failed sealant - before cleaning produces meaningful results. We camera-inspect first and show you what the metal looks like before recommending either path. Call (708) 683-3974 for a free inspection and written scope.
We pressurize the system to measure leakage, then apply mastic sealant by hand to every joint, seam, and register boot. A typical Mount Prospect split-level takes 4-6 hours and addresses 25-40 individual leak points. The work is photographed at each stage; you receive the images as part of the standard job record. Most split-levels in this market fall in the $380-$580 range for full sealing.
That pattern is common in Mount Prospect’s O’Hare-adjacent neighborhoods, particularly central and southeastern sections under flight corridors. Decades of jet exhaust and airport construction dust infiltrate through older, leakier building envelopes, then get drawn into return-air systems and deposited at grilles. The source is not your furnace; it’s unfiltered outside air entering through gaps in the return plenum and ductwork. Sealing those leaks stops the accumulation. We document the before condition and verify reduction at follow-up.
No. When fiberglass duct board has become brittle and friable - standard in Mount Prospect’s 1950s-1970s housing stock - agitation or repair attempts release fibers into the airstream. We contain the area and replace the section with sealed galvanized metal. This is a containment-and-replacement scenario, not a cleaning or patching job. Replacement runs $620-$1,400 depending on linear feet and access.
Most jobs complete in one day: 4-6 hours for sealing, 6-8 hours when metal repair or replacement is involved. We schedule arrival between 8 and 9 a.m., protect floors and furnishings, and leave the written price, photo record, and warranty documentation before departing. Crews are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. Call (708) 683-3974 to book.
Ready to see what’s inside your ducts? Call (708) 683-3974 for a free estimate. We’ll camera-inspect, put a written price in your hand before any work starts, and leave you with a documented photo record of every run - the CleanRun standard since 2013.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Mount Prospect since 2013.