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 | Sandstone Chimney Sweep
We provide independent Gelco chimney cleaning and Chimney Sweep – Chicago insert service across Chicago’s 60612, 60613, 60614, and 60615 ZIP codes. The one thing that makes our Gelco work different here: in Chicago’s brick two- and three-flats, a single masonry stack often vents multiple units, so we treat every Gelco insert cleaning as a building-wide flue assessment, not just an appliance sweep. We’re the team led by Norm Sobieski, and we know Gelco systems the way a mechanic knows a specific engine family. Call (833) 589-7835 for a straight answer and a free estimate.
Why Chicago Residents Choose Us for Gelco Service
Gelco fireplace inserts and venting components show up constantly in Chicago’s older brick housing stock. We’ve opened enough of these fireboxes in greystones, worker’s cottages, and bungalows to recognize the failure patterns before they become dangerous. Norm Sobieski grew up in Albany Park and learned mechanical systems through Truman College’s HVAC program, then spent years working chimneys across the northwest neighborhoods. That background means we approach a Gelco insert as part of a flue system, not an isolated appliance. We stock genuine Gelco replacement parts for safety-critical components and we’re local, which matters when a below-zero night exposes a draft problem. You won’t wait on a part shipped from somewhere else while your living room smells like exhaust.
We’re an independent service company. We’re not authorized, sponsored, or endorsed by Gelco. That independence is the point. We diagnose what’s actually wrong and tell you straight whether a repair makes sense or whether the insert has reached the end of its useful life.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Chicago
These are the specific failures we see on Gelco equipment in Chicago homes, tied directly to our climate and building stock:
- Unsealed insert-to-flue connections. On Gelco gas inserts, the vent collar where the insert meets the flue is often never properly sealed. Chicago’s lake-effect moisture and snowmelt work into that gap, corroding the surrounding metal. We remove the insert, clean the connection surface, and reseal it with the right high-temperature sealant.
- Seized damper and draft-control linkages. Gelco gas inserts installed in unheated exterior masonry chases cycle through Chicago’s freeze-thaw swings all winter. The linkages that control draft seize up. You’ll notice spillage into the room or a weak flame. We free and lubricate these mechanisms, and replace them with OEM parts when the wear is too far gone.
- Cracked refractory panels and surrounds. During below-zero spells, homeowners over-fire Gelco wood inserts to keep a big room warm. The refractory panels crack under the stress. Heat and creosote then reach the firebox walls where they shouldn’t. We inspect every panel during cleaning and replace cracked ones before the firebox itself gets damaged.
- Iced-over or debris-clogged termination caps. Gelco direct-vent units terminate at the exterior wall or roof. In Chicago, ice builds on those caps in January and February. On a shared chimney stack, a blocked termination isn’t just an efficiency problem. It’s a carbon monoxide risk for every unit served by that stack. We clear terminations and check the entire vent run during every Gelco cleaning.
- Crumbling clay-tile flues behind functioning inserts. A Gelco insert can burn fine while the flue tile behind it decays. Chicago’s freeze-thaw cycles crack clay tiles. When we clean a Gelco insert in a 1920s building, we camera-scan the flue above it. A clean insert venting into a cracked flue is still a hazard.
Gelco Service in Chicago: What Local Conditions Mean for Your Equipment
Here’s the thing about Chicago that changes how Gelco service has to work here. In the bungalow belt and across the South and West Side blocks, one shared masonry stack frequently vents two or three flats’ furnaces and water heaters alongside a single Gelco insert. One flue tile carries the exhaust from a Gelco direct-vent unit on the first floor and a water heater on the second. If that shared tile cracks, or if the Gelco insert’s vent connection leaks, the problem doesn’t stay in one unit. Exhaust migrates. Carbon monoxide follows the path of least resistance through the building. That’s why our Gelco in Near South Side cleanings in neighborhoods like Bridgeport and Pilsen start with a look at the whole stack, not just the insert that prompted the call. We were called to a three-flat in Bridgeport where the top-floor tenant’s Gelco gas insert kept spilling faint exhaust odor into the room on cold mornings. Climbing the shared stack, our tech found the insert’s vent collar loosely sealed and the flue tile cracked from past freeze-thaw, so meltwater had been working into the chase. We resealed the Gelco vent connection, repaired the damaged tile joint, and confirmed draft on all three flues serving the building. The spillage stopped, and the owners finally had one clear safety report covering every unit on that chimney. That’s the standard we apply to every Gelco job in Chicago. One call should give you the full picture.
A clean flue isn’t a luxury. It’s just what a working fireplace requires.
Gelco Models & Products We Service in Chicago
We service the full range of Gelco products found in Chicago homes. That includes Gelco gas fireplace inserts, Gelco wood-burning fireplace inserts, Gelco direct-vent gas fireplace systems, and Gelco venting and termination kits. For safety-critical components like vent collars, refractory panels, dampers, and terminations, we install genuine Gelco replacement parts. We use quality aftermarket parts only for non-critical hardware where it doesn’t affect safety or performance. Because we stock the common Gelco vent components and termination parts for Chicago’s typical installations, most repairs don’t wait on shipping. If a part does need to come from a distributor, we tell you that up front and schedule accordingly. See our full Gelco sales & service page for more on how we work with these systems.
See the difference
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AfterGelco Service Pricing in Chicago
Gelco service in East Garfield Park and across Chicago typically runs between $180 and $340, depending on the insert type, flue condition, and whether the stack serves one unit or three. A Level 2 camera inspection, which we recommend for any insert in a shared masonry stack, adds cost but gives you a visual record of what’s actually happening inside the flue. Damper repair on a Gelco gas insert usually falls between $150 and $400, depending on whether we’re freeing a seized linkage or replacing the damper assembly with an OEM part. Resealing an insert-to-flue connection runs $200 to $500. We quote flat pricing before we start, and every estimate includes a camera report with photos. No one should be told they need a new liner without seeing the evidence. Call (833) 589-7835 for an exact quote. Estimates are free.
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
Most cold-morning exhaust smells point to a venting problem, not the insert. Cold air traps exhaust, and if the vent collar is loosely sealed or the flue tile is cracked, the exhaust takes the easiest path indoors. We start by checking the vent connection and the flue above it before we touch the insert itself. Call (833) 589-7835 and we’ll trace it down.
We can clean it, but an unlined or single-wythe clay-tile flue in a building that old needs a camera inspection before you keep burning. Chicago’s freeze-thaw cycles crack those tiles, and a wood insert produces creosote that can reach the brick through those cracks. If the flue is sound, we’ll clean it and document the condition. If it’s compromised, we’ll show you the camera footage. Nothing gets recommended without evidence you can see.
Because in Chicago’s two- and three-flats, including areas served by our Gelco service in McKinley Park, multiple units share one masonry stack. The Gelco insert’s flue sits directly adjacent to flues serving furnaces and water heaters. A crack in one tile or a blocked termination affects the whole stack. One inspection covers the building. Call (833) 589-7835 to schedule it.
Usually, yes. We repair spalled brick and recast crowns when the structural core of the chimney is still sound. If the damage is limited to the crown and the outer brick face, repair makes more sense than a rebuild. We’ll tell you straight if the damage has gone too deep for patching. An estimate with photos costs you nothing.
It very likely is. Chicago’s repeated freeze-thaw cycling seizes damper linkages on Gelco gas inserts, especially those in unheated exterior chases. We free and lubricate the mechanism when it’s salvageable, and replace it with a genuine Gelco damper when it’s not. Call (833) 589-7835 for a diagnosis and a flat price before we start.
Service Areas Near Chicago
We cover Chicago’s 60612, 60613, 60614, and 60615 ZIP codes, including the Near North Side, the Chicago Loop, Lincoln Park, West Town, and the Near South Side. For neighborhoods on the Near West Side, see our Gelco service in Lower West Side page. Northwest Side residents can find specifics on our Gelco service in Logan Square page. Our full coverage map is on the Chicago service area page.
Book Your Gelco Service in Chicago Today
If you own a Gelco insert in Chicago, you need a team that understands shared stacks, freeze-thaw damage, and unlined flues. That’s us. Call (833) 589-7835 for a free estimate, and we’ll give you the straight picture of what your Gelco system needs and what it doesn’t.
Written by Norm Sobieski, Owner at Sandstone Chimney Sweep, serving Chicago’s brick flats and bungalows with Gelco insert service and whole-stack safety inspections.