Level 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 Evanston, IL | Level Two Chimney Evanston
We provide independent Chimney Cleaning & Sweep - Evanston and liner service across Evanston, Illinois, with one difference that matters here: we know how Lake Michigan’s northeast winds destroy Gelco stainless steel liners in ways inland crews rarely see. Our Level 2 camera inspections catch corrosion and seam separation before they become safety hazards. Call (708) 234-1174 for a written estimate before any work begins.
Why Evanston Residents Choose Us for Gelco Service
Corrine Halstead, our owner, grew up in Queens and learned this trade at Apex Technical School in Manhattan before bringing her crew to the Chicago area. She’s been running inspections across Evanston for several years now, including jobs on the older masonry stacks near the lakefront historic district. The camera doesn’t negotiate - and neither does creosote. That’s why she shows customers the footage first and the invoice second. Nothing gets approved without both on the table.
We specialize in Gelco sales & service for Evanston’s particular housing stock: the multi-flue brick chimneys built between 1885 and 1930 that dominate neighborhoods east of Ridge Avenue. These systems weren’t designed for modern heating loads, and the Gelco liners installed in them during the 1980s and 1990s are now reaching end-of-life under conditions the original installers didn’t anticipate. We’re not manufacturer-authorized. We’re manufacturer-experienced. Our independence means we source OEM Gelco parts when they make sense and quality aftermarket equivalents when they don’t, with the choice driven by your flue condition and your budget, not by a supply contract.
Every visit includes an NFPA 211 Level 2 inspection with camera documentation - Clause 4 of the Haven Standard, which we’ve followed since 2009. You get photos, readings, a written scope, and a written price before anyone picks up a tool. Our 365-Day Done Right Promise covers every job.
Common Gelco Chimney Cleaning Problems We Solve in Evanston

- Corrosion and pitting of Gelco stainless steel liners. Evanston’s lake-effect moisture drives rain and snow directly into chimney crowns, where it mixes with corrosive flue gases and attacks Gelco Z-Flex and Pro-Flex liners from the inside out. We see this most severely in chimneys on the east side of town, within a few blocks of the lake, where northeast winds hit with full force. Camera inspection reveals pitting long before it breaches the liner wall.
- Cracking or separation of Gelco liner seams. Evanston’s 30-40 annual freeze-thaw cycles expand hairline cracks at liner joints into full separations, especially in unheated exterior chimneys common on Victorian-era homes. A separated seam in a Gelco flexible liner can vent combustion gases into wall cavities. We map every joint with the camera and pressure-test where separation is suspected.
- Blockages from creosote accumulation in undersized Gelco liners. Many Evanston homes had Gelco liners installed in flues originally built for coal or oil, with diameters too small for modern wood-burning loads. The resulting incomplete combustion produces Class III glazed creosote that standard brushing won’t remove. We use mechanical de-glazing and chemical treatment where needed, then verify clearance with the camera.
- Failure of Gelco liner fittings from thermal expansion. Evanston’s temperature swings - from below-zero winter nights to summer humidity in the 90s - stress connector joints between Gelco liner sections and appliance adapters. We inspect these transition points specifically, as they’re the most common leak path for carbon monoxide.
- Hidden secondary flues interfering with active Gelco liners. In a Queen Anne home near Judson Avenue and Davis Street, we inspected a Gelco liner installed in the 1990s and found severe pitting and joint separation from years of lake-driven moisture. We removed the damaged liner, cleaned the flue, and installed a new Gelco Z-Flex liner with proper insulation and a multi-flue cap, restoring safe wood-burning use. The homeowner hadn’t known a second flue existed until our camera found it.
Before
AfterGelco Service in Evanston: What Local Conditions Mean for Your Equipment
Evanston’s historic homes east of Ridge Avenue often contain forgotten secondary flues from old coal furnaces that open into wall cavities, requiring full camera inspection to detect. This is not common in neighboring suburbs with newer housing stock. We’ve found these dead flues sharing wall space with active Gelco liners, sometimes drawing combustion air from the living space, sometimes venting into attics where homeowners store holiday decorations. The camera finds them. The written report documents them. And the written price to cap or line them - or to separate them properly from active systems - comes before any work starts. This is why a Level 2 inspection isn’t optional in Evanston. It’s structural due diligence on a house that predates building codes.
The lake-effect moisture that accelerates Gelco liner corrosion also saturates the masonry surrounding those liners. We’ve pulled failed Gelco systems from chimneys where the brick was sound but the liner had become a wick, drawing chlorides and sulfates from lake-driven precipitation into the stainless steel. Insulation matters here more than in inland markets. We specify insulated liner kits for Evanston lakefront installations as standard practice, not as an upsell.
Gelco Models & Products We Service in Evanston

We work with the full Gelco stainless steel liner product line: Gelco Z-Flex chimney liner kits for straight and moderately offset flues; Gelco flexible chimney liner kits for chimneys with significant offsets or transitions; and Gelco Pro-Flex chimney liner systems for high-efficiency appliance connections requiring tighter bend radii. Our Evanston warehouse stocks common Gelco diameters from 5″ to 8″, along with OEM termination caps, connector adapters, and insulation wraps. When a Gelco part is back-ordered, we source compatible aftermarket components through our Haven buying network - same fit, same warranty coverage, honest price difference explained in writing.
For replacement scenarios where a Gelco liner is damaged beyond safe repair, we recommend either a new Gelco system or a suitable alternative from DuraFlex or Olympia Chimney, selected for your flue configuration and your budget. Code compliance and safe clearances are non-negotiable; brand loyalty is not.
Gelco Service Pricing in Evanston
| Service | Price Range |
|---|---|
| Level 2 chimney inspection with camera scan | $249 - $349 |
| Gelco liner cleaning and creosote removal | $189 - $289 |
| Gelco liner repair (seam welding, patch, local fitting) | $340 - $580 |
| Gelco liner replacement with new Z-Flex system | $2,800 - $4,200 |
| Chimney waterproofing (crown, flashing, masonry seal) | $580 - $1,400 |
What drives cost: flue length and diameter, accessibility (steep roofs, narrow attics), creosote class severity, and whether the existing Gelco liner can be salvaged or must be removed. Every estimate includes the camera inspection, written scope, and photo documentation - no separate charges. Call (708) 234-1174 for an exact quote; estimates are free.
Serving Evanston, IL - Our Local Coverage Area

We’re based in the Evanston 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 Evanston
It accelerates corrosion and pitting of stainless steel surfaces, particularly on chimneys within a few blocks of Lake Michigan where northeast winds drive precipitation directly into crowns and mortar joints. The chloride content in lake-driven moisture is more aggressive than inland rain. We specify insulated Gelco liners and multi-flue caps for Evanston lakefront installations to slow this process. Call (708) 234-1174 for an inspection if your liner is more than 15 years old.
Because many homes east of Ridge Avenue contain forgotten secondary flues from coal furnaces that can share wall cavities with active Gelco liners, creating hidden venting hazards only a camera can locate. A Level 2 inspection is required by NFPA 211 for any real estate transaction, appliance changeout, or suspected liner damage. We include it on every visit - Clause 4 of the Haven Standard.
Localized seam cracks, fitting failures, and minor pitting can often be repaired with Evanston Chimney Repair using OEM Gelco patch kits or welded sleeves. If corrosion has penetrated the liner wall or multiple seams have separated, replacement is the only code-compliant option. We document the damage with camera footage and give you both options in writing when repair is feasible.
Annually for wood-burning systems, per NFPA 211. Evanston’s freeze-thaw cycles and lake moisture make this especially important: creosote absorbs moisture, expands, and can crack liners from the inside. Gas and oil systems with Gelco liners should be inspected every two years and cleaned as needed based on camera findings.
Yes, frequently. Many Evanston Victorians and Craftsmans were built without clay tile liners and require stainless steel inserts for safe modern use. We size Gelco Z-Flex or Pro-Flex systems to the appliance, insulate for Evanston’s climate, and document compliance with local building requirements. The installation includes camera verification and a written warranty under our 365-Day Done Right Promise.
Service Areas Near Evanston

We run Evanston service area calls daily, with regular routes into Gelco service in Wilmette and Gelco service in Glenview. We also cover Park Ridge, Elmwood Park, and Highland Park for Level 2 inspections and Gelco liner work. Same scheduling system, same written-price guarantee, same camera documentation on every job.
Book Your Gelco Service in Evanston Today
Call (708) 234-1174 to schedule your Gelco chimney cleaning or inspection. A live person answers 24/7. We’ll confirm your appointment, assign a named technician, and text you when they’re en route. Your written estimate arrives before any work starts. Your photo record arrives when the job is done. That’s the Haven Standard, and it’s how we’ve operated since 2009.
Written by Corrine Halstead, Owner at Level Two Chimney Evanston, serving Evanston since 2009.





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