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.
Why Hicksville Homeowners Choose Gelco Chimney Cleaning
We provide independent Gelco service in Hicksville, including chimney cleaning, repair, and maintenance - not as a factory-authorized dealer, but as experienced local sweeps who know how these units fail and how to fix them without voiding warranty coverage. Our Level-2 camera inspections document every Gelco firebox, damper, and vent termination with photos you can see and a plain-English verdict you can act on. Call (516) 259-3797 - a live person answers, 24 hours a day.
Hicksville’s post-war housing stock - those Cape Cods and ranches built between 1947 and 1965 - presents a specific challenge for Gelco fireplace and insert owners. Many of these homes were later fitted with Gelco wood-burning inserts or direct-vent gas units into flues originally sized for oil boilers. The chimney doesn’t care what you hoped it was - it shows you what it is. We’ve spent decades in Hicksville learning to read what these chimneys actually present, Gelco unit and all.
As an independent Gelco service provider, we’re not beholden to factory repair protocols that prioritize replacement over honest assessment. We use OEM-spec and quality aftermarket parts from professional-grade brands including Gelco, DuraFlex, and HeatShield, and we back every job with our 90-Day Done Right Promise in writing. No arguing. If it’s not right, we come back.
Why Trust Hearthstone Chimney Co. for Your Gelco Chimney Cleaning?
We’ve worked on Gelco fireplaces, inserts, and venting systems across Nassau County for over 42 years, including Gelco service in Levittown and surrounding areas. That’s long enough to know that Gelco’s shallow firebox design on wood-burning units collects creosote glaze in places a standard brush won’t touch, and that their direct-vent gas terminations clog with leaf litter and wasp nests in ways that mimic draft failure. Our technicians are background-checked, uniformed, and trained to spot the difference between a venting problem and a combustion problem - which saves you from paying for the wrong fix.
Russell Haines, our owner, grew up in Los Angeles and picked up the trade fundamentals at Los Angeles Trade-Technical College before deciding chimneys were the kind of problem worth a lifetime’s attention. He’s spent the better part of his career in the older Cape Cods and colonials off Broadway Mall in Hicksville, where Gelco inserts are common and where the original clay tile liners are now 60 to 75 years old. Russell’s built his reputation on finding what the last sweep missed and explaining it without making the homeowner feel foolish. That same patience shows up in how we approach every Gelco service call - documented like an engineer, explained like a craftsman.
We carry Gelco-compatible gaskets, dampers, and refractory materials on our trucks, and we complete most jobs in a single visit. Our no-hassle upfront pricing means the number on the estimate is the number on the invoice. A square deal: no surprises on the bill.
Common Gelco Chimney Cleaning Problems We Fix in Hicksville
- Creosote glaze on firebox walls and damper shelves in Gelco wood-burning inserts. The shallow firebox and baffle geometry lets soot and glaze stack up faster than on many open fireplaces. It’s hard to reach without pulling the insert, which is exactly why many sweeps don’t do it thoroughly. We pull the unit, scrape the glaze, and inspect the refractory panels while we’re in there. In Hicksville, where these inserts often vent through 70-year-old clay flues, that glaze is frequently mixed with acidic sulfur residue from decades of oil-heat exhaust - a combination that etches liners faster than wood creosote alone.
- Rusted or seized dampers on Gelco wood-burning units. Condensate from shoulder-season fires drips down the flue and corrodes the damper frame. Hicksville’s freeze-thaw cycles accelerate the damage. A seized damper won’t open fully for drafting or close fully for safety. We free and lubricate the mechanism, replace the gasket at the insert-to-flue connection, and test operation before we leave. If the frame is too far gone, we source an OEM-spec replacement.
- Cracked or spalling firebox panels and deteriorating refractory mortar. Gelco inserts that have run hot without proper Level-2 inspection develop heat stress cracks in the refractory. We photograph the damage, explain whether it’s cosmetic or structural, and replace panels with OEM-spec or compatible aftermarket refractory materials. We don’t sweep past a cracked shell and take your money.
- Leaking or degraded vent gaskets on Gelco direct-vent gas units. These gaskets harden and shrink over time, pulling combustion air from the wrong place and sooting the glass. We replace with OEM-spec gaskets and verify the vent pressure test before calling it done. Hicksville’s nor’easter-driven rain finds every compromised seal.
- Blocked termination caps on Gelco direct-vent gas systems. Leaf litter, wasp nests, and ice buildup restrict exhaust flow and trigger safety shutoffs. We clear the termination, inspect the vent run with a camera, and check for back-pitching that lets condensate pool. A draft complaint on a Gelco gas unit is often a cap problem, not a chimney problem - but you need someone who knows the difference.
Gelco Parts & Our Repair-vs-Replace Approach
For Gelco units, we use OEM-spec gaskets, dampers, and refractory materials where they’re still available, and quality aftermarket equivalents for common wear items like caps and flashing from Copperfield and Famco. We stock Gelco-compatible parts locally for fast turnaround on most Hicksville calls and East Meadow Gelco service requests.
If a Gelco firebox is cracked through the shell or the venting is compromised beyond safe repair, we’ll say so plainly. We’ve turned down sweeps on units that needed rebuilding, and we’ve rebuilt units that another company wanted to condemn. The camera doesn’t lie, and neither do we. Nothing gets recommended without photo evidence you can see for yourself.
Call (516) 259-3797 for a free estimate on your Gelco chimney cleaning or repair in Hicksville.
Our Gelco Service Process - Step by Step
- 1
Diagnosis with Level-2 camera inspection. We photograph the Gelco firebox, flue liner, damper assembly, and vent termination. For direct-vent gas units, we pressure-test the vent system. For wood inserts, we assess creosote loading and refractory condition. You get the photos and a plain-English verdict.
- 2
Repair or install with Gelco-compatible parts. We pull inserts when necessary, replace gaskets and dampers with OEM-spec or quality aftermarket components, and rebuild refractory with HeatShield or compatible materials. All work follows manufacturer-safe practices that won’t void remaining warranty coverage.
- 3
Test and verify. Wood units get a test fire with draft measurement. Gas units get combustion analysis and vent pressure verification. We confirm the Gelco unit operates as designed before we pack up.
- 4
Warranty documentation. Your 90-Day Done Right Promise goes in writing before we leave. Krafted right, Every time, Your home first, Standing behind it. If it’s not right, we come back. No paperwork, no arguing.
Gelco Products We Service & Install in Hicksville
We service and install Gelco direct-vent gas fireplace inserts, Gelco wood-burning fireplace inserts with glass doors, Gelco gas log sets and burner assemblies, and Gelco factory-built chimney and venting systems. We stock gaskets, dampers, refractory panels, and termination caps for common Gelco series on our Hicksville-area trucks, which means most repairs finish in one visit. For discontinued models, we source compatible aftermarket parts through our network of professional-grade suppliers.
We Also Service These Brands
We’re not single-brand dependent. Hearthstone Chimney Co. services and installs DuraFlex chimney liners, HeatShield cerfractory flue sealant systems, and products from Olympia Chimney, Famco, and Copperfield. Our multi-brand expertise means we match the right material to your chimney’s actual condition, not whatever we happen to sell.
FAQs - Gelco Chimney Cleaning Service in Hicksville
Is Hearthstone Chimney Co. authorized by Gelco?
No. We’re an independent chimney services company, not a Gelco dealer or authorized agent. We’ve simply worked on Gelco fireplaces, inserts, and venting in Nassau County for years, and we service them using practices that won’t void remaining warranty coverage. Call (516) 259-3797 for a free estimate.
Do you use genuine Gelco/OEM parts?
We use OEM-spec gaskets, dampers, and refractory materials where they’re still available from Gelco suppliers, and quality aftermarket equivalents from professional-grade brands like Copperfield and Famco for common wear items. We never substitute builder-grade parts.
How long does Gelco service take?
Most Gelco chimney cleaning and routine maintenance jobs take two to three hours. Insert pulls, damper replacements, or refractory repairs may run longer. We give you a time estimate before we start, and we complete most jobs in a single visit.
What Gelco models/series do you cover?
We cover Gelco direct-vent gas fireplace inserts, Gelco wood-burning fireplace inserts with glass doors, Gelco gas log sets and burner assemblies, and Gelco factory-built chimney and venting systems. For discontinued models, we source compatible parts through our professional-grade supplier network.
Will service void my Gelco warranty?
Our service practices are designed to be warranty-safe. We don’t modify factory specifications, we use OEM-spec or compatible parts, and we document our work with photos. That said, we are not Gelco-authorized, so we cannot extend or enforce manufacturer warranty terms ourselves. For warranty claims directly with Gelco, you may need an authorized dealer.
How much does Gelco chimney cleaning cost in Hicksville?
Gelco chimney cleaning in Hicksville typically runs $180-$280 for a standard sweep and Level-2 inspection. Insert pulls, damper repairs, or refractory work add $150-$400 depending on parts and labor. We provide no-hassle upfront pricing before any work begins - the number on the estimate is the number on the invoice. Call (516) 259-3797 for an exact quote; estimates are free.
Do you need to pull my Gelco insert to clean the chimney properly?
For Gelco wood-burning inserts, yes - the shallow firebox and baffle geometry trap creosote glaze behind and beneath the unit where a standard brush can’t reach. We pull the insert, clean the flue and firebox thoroughly, inspect the refractory panels, and reseal the gasket at the insert-to-flue connection. A sweep that doesn’t pull the insert is leaving fuel for a chimney fire.
My Gelco gas insert smells odd when it runs - is that a chimney problem?
Odd smells from a Gelco direct-vent gas insert usually indicate a vent gasket leak, debris in the termination cap, or combustion air contamination - all of which we diagnose with vent pressure testing and visual inspection. It’s not normal, and it shouldn’t be ignored. Call (516) 259-3797 and we’ll sort out whether it’s a venting issue or a gas-service issue.
Can you get parts for an older Gelco fireplace or insert?
Often, yes. For discontinued Gelco models, we source compatible aftermarket gaskets, dampers, and refractory materials through our professional-grade supplier network. If a part is truly obsolete, we’ll tell you honestly and discuss replacement options.
Why does my Gelco wood insert build up creosote so fast?
Gelco wood inserts have a shallow firebox and restrictive baffle geometry that concentrates combustion byproducts. Combined with Hicksville’s common scenario - an undersized flue originally built for oil heat - the draft pattern deposits creosote faster than an open fireplace. Burning seasoned hardwood and keeping the air intake open helps, but annual professional cleaning is non-negotiable for these units.
Is a level-two inspection necessary for a Gelco insert installation?
Yes. NFPA 211 requires a Level-2 inspection before installing any fireplace insert, including Gelco models. We camera the full flue, check liner sizing and condition, and verify clearance to combustibles. In Hicksville’s 70-year-old chimneys, we frequently find clay tile damage or improper sizing that must be addressed before the insert goes in. Call (516) 259-3797 to schedule.
Book Your Gelco Service in Hicksville, NY
Call (516) 259-3797 any hour - a live person answers, 24 hours a day, 7 days a week. We’ll schedule your our Chimney Cleaning & Sweep services, inspection, or repair at a time that works, provide upfront pricing before any work begins, and back every job with our 90-Day Done Right Promise in writing. We’ve served Hicksville and Nassau County for over 42 years, and we plan to be here for decades more. Done right - and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Hicksville since 1984.





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