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 Lombard
Duct repair and sealing in Lombard, IL typically costs $280-$780 for most residential jobs, with full-system mastic sealing and insulation wrapping on older ranch homes running toward the higher end. Our crews dispatch daily to Lombard from our Chicago office, and we carry the common sheet-metal fittings and flex duct sizes needed for the post-war ranches that dominate this market. Call (331) 236-5490 for a written estimate before any work starts.
We’ve been in enough Lombard basements to know the pattern: long horizontal duct runs, a furnace swapped in the 1980s, and a homeowner who has no idea there’s a dead-leg branch sealed behind the drywall. Our Duct Repair & Sealing team documents everything with before-and-after photos of every run, every time. That’s Haven Standard Clause 1: written price first, then the work, then the photo record.
Why CleanRun Air Duct Cleaning Naperville Is Lombard’s Preferred Duct Repair & Sealing Company
Lombard homeowners know the difference between vacuum noise and actual duct repair because we show them. Our documented photo record, included on every visit since 2013, lets a customer see inside their own ductwork before they decide what to fix. No other company serving the Lilac Village puts that in writing on every job.
Our reviews from Lombard customers consistently mention two things: the technician named themselves before arrival (Haven Standard Clause 3: Verified Crews), and the written price matched the final invoice. No add-ons, no per-vent upsells. One flat price per system, agreed before work starts.
We coordinate dispatch from our Chicago office, which means Lombard calls get same-week scheduling without the overhead of a distant suburban depot. Crews know the local housing stock: the ranches south of Roosevelt Road, the split-levels near Lilac Park, the 1950s developments off Finley Road where the original sheet-metal is now pushing 70 years.
Tomas Reyes, who leads CleanRun, established the 365-Day Done Right Promise in 2013 and has kept it as a written guarantee, not a policy subject to manager approval. That promise applies to every Lombard job we take.
Our Duct Repair & Sealing Services in Lombard
Duct Sealing with Mastic Sealant
Mastic sealant is a thick, fiber-reinforced paste brushed onto every joint, seam, and penetration in your duct system, then left to cure into a permanent, flexible seal. In Lombard’s 60-year-old ranch homes, we find original duct tape that dried and peeled decades ago, leaving supply leaks of 15-25% into basements and crawl spaces. A typical mastic sealing job on a Lombard ranch runs $340-$580, depending on accessible linear footage. We use Guardsman professional-grade mastic rated for the temperature cycling these old systems see.
Flex Duct Repair
Flex duct, the insulated flexible tubing common in additions and retrofits, collapses, kinks, or gets chewed by rodents in Lombard’s older homes with crawl-space access. We replace damaged flex with new, properly supported runs and seal the connections with mastic, not zip ties and hope. A standard flex repair or replacement in Lombard costs $180-$340 per run. We stock the common diameters so most jobs finish in one visit.
Metal Duct Repair
Original sheet-metal ductwork in Lombard’s post-war ranches corrodes at the seams, separates at the elbows, and gets punctured by homeowners hanging storage. We patch, replace sections, or rebuild plenums using professional-grade tools. Metal repair on a Lombard system typically runs $280-$620, with full plenum replacement at the higher end. Our crews carry Rotobrush inspection cameras to show you the damage before we cut anything.
Duct Insulation and Air Leak Repair
DuPage County’s humid summers mean uninsulated or poorly sealed supply lines in Lombard crawl spaces and basements sweat condensation into the surrounding air and back into the duct seams. We wrap supply trunks with foil-backed fiberglass insulation and seal every joint with mastic, stopping both the thermal loss and the moisture that feeds mold. Full insulation wrapping on a Lombard ranch basement system runs $420-$780. The work includes a post-repair static pressure test so you can see the improvement in hard numbers.
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 Lombard
We build our repair inventory around equipment we can explain and you can verify: Rotobrush for mechanical agitation and camera inspection, Nikro for negative-pressure HEPA collection, Honeywell for media filtration upgrades when a repair reveals inadequate downstream protection. These aren’t proprietary systems with mystery parts. If we recommend a Guardsman mastic application or a Honeywell filter upgrade on your Lombard system, you can look up the specifications independently and compare our quote against the documented scope. We stock the common fittings for Lombard’s predominant duct sizes, so most repairs don’t wait on a parts run.
Common Duct Repair & Sealing Problems We See in Lombard Homes
- Dead-leg branches sealed behind drywall. The original furnace plenum was repositioned during a 1970s or 1980s upgrade, leaving orphaned duct stubs packed with insulation debris and rodent nesting that no filter change ever reaches. Homeowners pay for “full cleans” that never touch these hidden runs.
- Lilac pollen packed into horizontal runs. Lombard’s concentrated late-April through May pollen surge hits just as residents switch from heat to cooling, pulling massive volumes of fine pollen into long, flat ranch ductwork with almost no vertical drop to let debris drain out. It packs into the lowest sag points and registers.
- Condensation-wet seams in crawl spaces. DuPage County’s flat terrain offers little natural airflow to dry out crawl spaces or slab-adjacent ductwork. Without mastic sealant on every joint and proper duct insulation, summer humidity condenses on cold supply lines and re-wets dust between cleanings.
- Original plenum corrosion at the furnace connection. Sixty years of thermal cycling cracks the sheet metal where the plenum meets the air handler, leaking conditioned air into the basement and pulling unfiltered return air through the gap. The homeowner notices it as uneven temperatures, not as a duct problem.
Pricing for Duct Repair & Sealing in Lombard, IL
Here’s what duct repair and sealing actually costs in Lombard’s market, based on jobs we’ve completed with written prices on file:
| Service | Typical Range in Lombard |
|---|---|
| Mastic sealing (accessible basement system) | $340-$580 |
| Flex duct repair/replacement (per run) | $180-$340 |
| Metal duct repair (patch to section replacement) | $280-$620 |
| Duct insulation wrapping (supply trunk) | $420-$780 |
| Full system: seal, insulate, repair | $680-$1,240 |
Three factors move a Lombard job up or down within these ranges: accessibility (finished basements take longer), the extent of hidden damage found during camera inspection, and whether we need to cut access panels to reach dead-leg branches. Every quote is written and agreed before work starts. No per-vent pricing, no coupon bait. Bring us a competitor’s written estimate and we’ll provide a free second opinion under Haven Standard Clause 5.
Call (331) 236-5490 for an exact quote on your Lombard home. Estimates are free.
We Also Serve Cities Near Lombard
Our crews work daily across DuPage County, including Lombard‘s neighboring communities: Glendale Heights to the north, Downers Grove and Lisle to the south, and Elk Grove Village to the northwest. The same written-price-first protocol, the same documented photo record, the same 365-Day Done Right Promise applies to every job in every town.
Serving Lombard, IL - Our Local Coverage Area
We’re based in the Lombard 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 Lombard
Every 3-4 years, which is more frequent than the 5-7 year interval typical in less pollen-heavy suburbs. Lombard’s concentrated May lilac bloom coincides exactly with HVAC changeover, pulling massive pollen loads into long horizontal ranch ductwork that has no vertical drop to clear debris. The combination of 60-plus-year-old sheet metal and this unique pollen surge creates a cleaning interval no neighboring suburb’s ducts share. Call (331) 236-5490 to schedule a camera inspection and we’ll show you what’s actually inside your runs.
Usually yes, and in Lombard’s post-war ranches it’s often a dead-leg return branch sealed off during a 1970s-1980s furnace upgrade. We were out on a ranch near Lilac Park where the family had cats, a 1961 furnace replacement, and a return that pulled zero air. Camera inspection showed a dead-leg return branch sealed behind drywall and loaded with insulation fiber. Our tech cut an access panel, ran negative pressure with HEPA filtration on the collector, agitated the branch with a whip, source-removed the debris, then mastic-sealed the new connection and wrapped the trunk in foil-backed insulation. Static pressure at the air handler dropped 0.18 in. w.c. and the return finally moved air. Call (331) 236-5490 and we’ll camera-inspect your system to find out if it’s the same problem.
Yes. DuPage County’s flat, humid summers mean crawl-space supply lines in Lombard sweat condensation that basement systems don’t face. We use mastic sealant on every joint (not just tape), then wrap with foil-backed insulation to prevent thermal bridging. Without this dual approach, condensation wicks into seams and re-wets dust between cleanings, creating conditions for mold colonization that a basement system rarely sees. Call (331) 236-5490 for a crawl-space-specific quote.
It helps, but it’s not the whole answer. Mastic sealing prevents pollen-laden air from leaking into return ducts through gaps in basements and crawl spaces, which reduces the total particulate load the system circulates. However, the primary lilac pollen entry point is through normal return grilles during the April-May bloom. For Lombard homes, we recommend pairing duct sealing with a MERV 13 or higher filter upgrade (Honeywell media filters are one option we install) and cleaning every 3-4 years to remove what the filter catches. Call (331) 236-5490 and we’ll assess your specific system.
Negative-pressure extraction means we attach a powerful HEPA-filtered vacuum to your duct system, creating suction that pulls loosened debris out through a contained hose rather than letting it escape into your home. In Lombard’s older ranches with decades of packed pollen and insulation debris, this matters because agitation alone (brushing or whipping) would just redistribute fine particles through the house. Our Nikro HEPA collectors maintain negative pressure throughout the job, capturing 99.97% of particles down to 0.3 microns. The photo record shows the before and after of every run. Call (331) 236-5490 to see how it works on your system.
Ready to see what’s actually inside your Lombard ductwork? Call (331) 236-5490 for a free written estimate. We’ll show you the camera footage, name the exact price before any work starts, and leave you with a documented photo record of every run we touched. That’s the Haven Standard, and it’s been our only way of working since 2013.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Naperville, serving Lombard since 2013.