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 Long Grove, IL | Duke Chimney Sweep
We provide independent Gelco chimney cleaning and service across Long Grove, Illinois. Our crews work on Gelco wood inserts, freestanding stoves, zero-clearance boxes, and gas inserts throughout the 60049 ZIP. What sets our Gelco work apart in Long Grove specifically is that we plan every cap, crown, and exterior-facing repair around the village’s historic district rules and the wildlife pressure that comes with the tree canopy. Call (844) 660-6510 for a free estimate.
Why Long Grove Residents Choose Us for Gelco Service
Gelco units are built well, but they don’t forgive neglect. Long Grove homeowners call us because we know exactly how these boxes behave after a decade of hot fires and hard winters. We’ve torn down enough Gelco inserts to know which gasket compounds hold, which baffle boards fail first, and when a refractory panel is cracked but still safe versus when it needs replacing. Rob Szymanowski, our owner, grew up in Wheeling and trained in the HVAC and building systems program at Harper College before working chimneys and dryer vents across Cook and Lake counties. He built Duke Chimney Sweep on a simple rule: explain what’s actually wrong and don’t invent problems. We’re an independent Gelco sales & service provider, not a manufacturer affiliate, so we diagnose the unit in front of us rather than reciting a brand script. That matters when you’re trying to decide whether a repair makes sense or a replacement is smarter.
Styles & brands we work with





Common Gelco Chimney Cleaning Problems We Solve in Long Grove
- Warped baffle boards and sagging secondary burn tubes. Gelco wood inserts run hot, and after several seasons the baffle board can warp enough to choke the draft. Smoke rolls back into the room instead of up the flue. We replace these with OEM Gelco baffles where available, and we check the burn tubes at the same time so the secondary burn still works.
- Hardened door gaskets and leaking glass retainers. Air leaks around the door on a Gelco insert make the fire run hot and uneven. The glass soots up within days of cleaning. We replace gaskets and retainers with OEM Gelco parts or a verified aftermarket equivalent when the original is discontinued. This is one of the most common repairs on older inserts in Long Grove homes that burn all winter.
- Cracked refractory panels in zero-clearance fireboxes. Long Grove’s freeze-thaw cycles are hard on masonry, and they’re hard on refractory liners too. A cracked panel lets heat reach the outer shell of the box. We inspect these during every cleaning and tell you honestly whether the panel can wait or needs replacement now.
- Pilot dropout on Gas Gelco inserts. Millivolt gas valves and thermopiles fail slowly, and the pilot drops out on the coldest January mornings. It’s worse when the venting is packed with bird nesting, which happens constantly in Long Grove’s wooded lots. We test the thermopile output, inspect the vent run, and replace what’s actually failed.
- Wildlife intrusion through uncapped flues. Raccoons and squirrels get into uncapped chimneys in Long Grove routinely. They nest on the smoke shelf, block the flue, and sometimes die in there. We camera-inspect before every cleaning and fit proper caps so the problem doesn’t return next spring.
Gelco Service in Long Grove: What Local Conditions Mean for Your Equipment
Long Grove’s historic village center is a designated historic district, and the exterior alteration rules are strict. That changes how we approach cap and crown work on chimneys there. A cap that looks like an obvious new addition, or a crown finished in the wrong material, can run into compliance issues with the district’s review process. So before we order anything, we photograph the existing cap profile, match the material and finish, and specify the work so it reads as maintenance rather than a visible exterior change. That’s a different workflow than we use on newer estate construction where the chimney is back from the road and nobody’s reviewing the profile. For Gelco owners in the historic core, this means cap installation and crown repair happen with an extra layer of care that protects both the fireplace and the home’s standing under the district rules. The freeze-thaw swings that crack masonry also put stress on Gelco fireboxes and flue connections, so we treat every cleaning in Long Grove as a chance to catch the small stuff before the district has to get involved with a rebuild.
Gelco Models & Products We Service in Long Grove
We work on the full range of Gelco equipment you’re likely to find in a Long Grove home. That includes Gelco wood-burning fireplace inserts with the glass-door series, freestanding Gelco wood stoves with baffle-and-tube secondary burn, Gelco zero-clearance fireplace boxes with refractory-lined fireboxes, and Gelco gas fireplace inserts running millivolt valves with remotes. Our parts approach is straightforward: we favor OEM Gelco gaskets, baffles, and refractory panels where they’re still available. Aftermarket firebox parts often fit poorly and can void the unit’s listed clearances. For discontinued pieces we source verified aftermarket equivalents and tell you upfront what we’re using and why. We keep common Gelco gaskets, baffles, and cap components stocked so most Long Grove jobs don’t wait on a parts shipment.
See the difference
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AfterGelco Service Pricing in Long Grove
Chimney sweeping for a Gelco unit in Long Grove typically runs between $199 and $349. A Level 2 inspection adds $150 to $350, and we recommend it after any animal intrusion, before buying a home, or if the insert has been smoked heavily for years. Cap supply and installation runs $250 to $600 depending on the flue configuration and the cap profile required by the historic district. Firebox repointing or refractory panel replacement falls between $400 and $900 on most Gelco boxes in this area. What actually drives cost here is access, the condition of the flue, and whether the district rules require us to match a specific cap profile or material. Every estimate is free and based on a camera inspection you can see. Call (844) 660-6510 for an exact number on your setup.
Serving Long Grove, IL — Our Local Coverage Area
We’re based in the Long Grove 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 Long Grove
A Level 2 inspection gives you a camera view of the entire flue and the firebox, so you can see the actual condition of the panels, baffle, and liner. We use it to tell you whether the unit is safe to keep burning, what needs repair now, and what can wait. If the box is cracked beyond safe repair, we say so plainly and show you the images. If it’s fine, we tell you that too. Call (844) 660-6510 to schedule one in Long Grove.
The dense tree canopy and large wooded lots in Long Grove mean raccoons and squirrels constantly look for warm, sheltered places to nest. An uncapped flue is exactly that. Animals get in, pack the smoke shelf, sometimes die, and the first sign is smoke backing into the room or a smell that won’t go away. We camera-inspect every flue and recommend a proper cap sized for your Gelco unit’s draft.
It can be either, and the only way to know is to test the thermopile output and inspect the vent run. Cold snaps strain millivolt systems, and bird nesting or debris in the venting makes pilot dropout worse. We test first, then replace only what failed. Call (844) 660-6510 and we’ll diagnose it properly.
Yes, and we do it regularly. We photograph the existing cap profile, match the material and finish, and specify the cap so it reads as maintenance rather than a visible exterior alteration. That keeps the work compliant with Long Grove’s historic district review process. Call (844) 660-6510 for a free assessment.
No. A cracked panel is a repair, not a death sentence, as long as the surrounding firebox structure is sound and the cracks haven’t opened wide enough to expose the outer shell. We replace panels individually with OEM Gelco or verified equivalent parts. If the firebox itself is cracked through, that’s a different story, and we’ll show you the camera evidence before recommending anything. Call (844) 660-6510 for an honest read.
Service Areas Near Long Grove
We serve the full Long Grove service area and the surrounding communities. If you’re in Schaumburg, Hoffman Estates, Roselle, or Hanover Park, we cover those too. Our crews also handle Gelco work in Gelco service in Villa Park and Gelco service in Lombard. Same crew, same standard.
Book Your Gelco Service in Long Grove Today
If your Gelco insert is smoking, the glass is sooting fast, or the pilot’s dropped again, call us. We’ll camera the flue, show you what we find, and give you a straight answer. Call (844) 660-6510 for a free estimate in Long Grove.
Written by Rob Szymanowski, Owner at Duke Chimney Sweep, serving Long Grove and the surrounding communities.