Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Gelco Chimney Cleaning in Chicago, IL | Wexford Chimney Sweep
We provide independent Gelco chimney cleaning and service across Chicago, with a focus that comes from years spent on the pre-war masonry stacks that dominate this city’s housing stock. The thing that separates our Gelco work here isn’t the equipment, it’s the context: Chicago’s freeze-thaw cycle, shared furnace and water heater flues, and alley-facing chimneys you can’t see from the ground all change how Gelco components age and where they fail. We sweep it, inspect it, and if something’s wrong, we fix it, using genuine Gelco parts where the flue calls for them. Call Wexford Chimney Sweep at (866) 361-2607 for a free estimate on Gelco chimney cleaning in Chicago.
Why Chicago Residents Choose Us for Gelco Service
We’re Gelco sales & service specialists in the sense that matters most: we’ve handled enough Gelco stainless liners, caps, and damper assemblies in Chicago’s older brick buildings to know how they behave after a decade or two of hard winters. Norm Sulecki, our owner, grew up a few blocks from Hawthorne Race Course in Cicero and has been working on chimneys in this part of Cook County for going on two decades. He picked up the fundamentals of heating systems and venting at Triton College in River Grove, then spent years doing hands-on work before starting Wexford. That background shows in how we approach a Gelco flue: we look for the failure patterns specific to Chicago’s housing, not just the generic checklist.
Because we’re an independent service provider, not a manufacturer program, our recommendation is based on what the camera actually shows in your flue. We carry genuine Gelco liner sections, caps, and damper components, so when a replacement is needed, it matches what’s already installed. When a repair is the honest call, we say so. Professional-grade materials, not hardware-store substitutes. That’s the whole point of specializing in a brand. It’s also why homeowners from North Lawndale to East Garfield Park call us when their Gelco equipment needs attention.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Chicago
- Separated insulated liner joints at elbows. Years of heat cycling loosen the connections on Gelco insulated flexible liners, especially where the liner bends to meet a furnace or water heater flue collar. In Chicago’s two- and three-flats, that separation exposes the original clay tile behind the liner, which is often already cracked from a century of freeze-thaw. We resecure the section when it’s sound, or replace the run if corrosion has spread.
- Gelco caps pulling free of their legs in spring windstorms. The sealer around cap fastener holes breaks down under Chicago’s repeated snowmelt-refreeze cycles. Once the holes open up, the legs wobble, the cap rattles, and a strong March wind can take it off entirely. We stock Gelco multi-flue and single-flue stainless caps so replacement is same-visit when needed.
- Hardened top-sealing damper gaskets. A Gelco top-sealing damper depends on a pliable gasket to close properly. In a Chicago heating season, warm moist interior air rises into a cold flue and the gasket eventually stiffens and stops sealing. That lets flue gases vent poorly and accelerates spalling on the crown and tile. We replace the gasket and test the seal before we leave.
- Condensate pitting on liner seams in gas-fired flues. High-efficiency gas furnaces produce acidic condensate, and in a shared pre-war Chicago stack, that condensate pools at the bottom of the flue where the Gelco liner meets the appliance connector. We see white corrosion pitting at the seams. The fix is catching it before the liner perforates; after that, section replacement or a reline is the only answer.
- Uncapped or improperly capped Gelco liners on alley-facing stacks. Many Chicago rear chimneys sit below the adjacent roofline, which means a missing or damaged cap goes unnoticed until water has already worked into the flue. Our rooftop Level 2 inspection catches cap damage on Gelco liners that a ground-level glance can’t, particularly in the near-south and near-west ZIPs where the 1880s-1920s brick three-flats dominate.
Gelco Service in Chicago: What Local Conditions Mean for Your Equipment
Here’s a Chicago-specific detail that changes how we service Gelco equipment, and it’s not something you’d hear from a generic sweep company. The alley-facing rear chimney stacks on 1880s-1920s two- and three-flats often sit below the adjacent roofline. That means cap and crown damage goes unseen from the ground, even by a careful homeowner. A Gelco cap can lose its sealer at the leg fasteners over a single hard winter, and nobody notices until spring meltwater has saturated the crown, dripped down the liner chase, and started spalling the clay tile inside. By the time a rattle or a water stain shows up inside the house, the repair is bigger than it needed to be. We run a chimney camera on every Gelco service visit in Chicago because the part of the flue that’s failing in this city is usually the part you can’t see from the sidewalk. In neighborhoods like Brighton Park and McKinley Park, where Century of Progress-era two-flats are common, we regularly find tile offsets hidden behind a first-floor wall, sometimes two feet below where the Gelco liner terminates. That offset, combined with a below-roofline cap, is a Chicago signature. It’s why a Level 2 inspection with a camera is standard on our Gelco chimney cleaning calls here, not an upsell.
Gelco Models & Products We Service in Chicago
Our team handles the full Gelco stainless product line as it appears in Chicago’s residential flues: single-wall and insulated flexible relining kits, rigid stainless liner sections for taller masonry stacks, multi-flue and single-flue stainless chimney caps, and top-sealing damper assemblies. We stock genuine Gelco liner, cap, and damper components so replacements match what’s already in the flue. If a Gelco part is back-ordered, we’ll consider a quality aftermarket cap leg or gasket, but only when the fit is verified against the existing hardware. We don’t substitute generic parts into a Gelco system and call it done. On a service call, we’ll tell you plainly whether a liner section can be repaired or whether the whole run needs replacement. If the Gelco liner is holding and the tile behind it is sound, repair is the call. If separation or corrosion runs a full section, we say so and show you the camera footage. One company for your chimney and your dryer vent, both are fire risks, both deserve a specialist.
See the difference
Before
After
Before
After
Before
AfterGelco Service Pricing in Chicago
Gelco chimney cleaning and inspection in Chicago typically runs between $180 and $340 for a standard single-flue sweep with a camera check, though pre-war two- and three-flats with multiple flues and rooftop access complications can push toward the higher end. Cap replacement on a Gelco stainless unit, including the part and rooftop labor, generally falls between $350 and $650 depending on the model and stack height. Top-sealing damper gasket replacement is usually $220 to $400. Liner section repair or replacement varies too much to quote without seeing the flue, which is why our free estimate always includes a camera look first. The price you’re quoted is the price you pay, and we don’t recommend work the camera can’t justify. Call (866) 361-2607 and we’ll give you an honest number based on what’s actually in your chimney.
Serving Chicago, IL — Our Local Coverage Area
We’re based in the Chicago 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 – Gelco Chimney Cleaning in Chicago
It’s usually a cap problem first. Chicago’s freeze-thaw cycle breaks down the sealer around the cap’s leg fasteners, the holes open up, and the cap starts rattling in the wind before the crown itself fails. We check both on every visit, because a loose Gelco cap left through one more winter will absolutely damage the crown underneath it. Call (866) 361-2607 and we’ll tell you which it is, no guesswork.
Yes, and in Chicago specifically, the camera matters more on the flues that seem fine. A separated elbow joint, a tile offset behind a wall, or corrosion at the bottom of a shared stack can all be silent, because the draft still works until the failure has progressed far enough to cause a chimney fire or carbon monoxide backup. We find problems on “clean” Chicago flues all the time. The camera is standard on our Gelco service, not an add-on. Call (866) 361-2607 to schedule an inspection.
In most cases, yes. If the separation is localized and the surrounding liner sections are structurally sound, we can resecure or replace the affected section without pulling the entire run. The camera tells us where the damage stops. If corrosion has spread past the joint, we’ll tell you plainly and show you the footage before recommending a full reline. Call (866) 361-2607 for an honest assessment.
That’s condensate pitting, and it’s common in Chicago’s shared pre-war furnace flues. High-efficiency gas furnaces produce acidic condensate that pools at the bottom of the liner and attacks the stainless at the seams. Early on, it’s a cleaning and inspection issue. If it’s gone too far, the liner section needs replacement. Our camera tells you which situation you have before you spend money on a reline you might not need. Call (866) 361-2607 for a free estimate.
No. Chimney waterproofing is a masonry surface treatment applied to the exterior brick and crown, not the stainless components. A properly applied breathable waterproofing product won’t touch the Gelco cap or liner at all. What it does is slow the freeze-thaw absorption that cracks Chicago crowns and spalls mortar, which protects the flue structure around your Gelco components. Call (866) 361-2607 to talk about waterproofing as part of a full chimney service.
Service Areas Near Chicago
In addition to our Chicago coverage across the 60612, 60613, 60614, and 60615 ZIPs, we provide Chicago service area coverage and serve the nearby western suburbs and near-south neighborhoods. That includes Gelco service in La Grange Park, Cicero, Berwyn, North Lawndale, South Lawndale, and Stickney. If you’re in West Garfield Park or the surrounding blocks, we’re close by. We also provide Gelco service in New City and the adjacent South Side neighborhoods, where the pre-war three-flats share the same flue conditions we see across Chicago.
Book Your Gelco Service in Chicago Today
A clean flue isn’t a luxury, it’s just how the thing is supposed to work. If your Gelco liner, cap, or damper needs attention, or if it’s simply been a few years since anyone looked, call (866) 361-2607 for a free estimate. We’ll bring the camera, the genuine parts, and an honest recommendation. A chimney inspection in Chicago is a spring job, and the earlier you book, the more options you have before the next freeze-thaw cycle starts.