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 Forest Hills, NY | Hearthstone Chimney Co.
We provide independent Chimney Cleaning & Sweep - Forest Hills and Gelco liner service across Forest Hills, Queens, with crews who understand the draft-balance quirks of the neighborhood’s century-old multi-pot chimney stacks. The one thing that sets our Gelco work apart here: we’ve spent years inside the 1910s-1940s Tudor Revival flues of Forest Hills Gardens, where capping one pot without accounting for the others can backdraft a basement water heater. Call (516) 531-6315 for a free estimate, or read on to see how we handle Gelco equipment in this specific housing stock.
Why Forest Hills Residents Choose Us for Gelco Service
Russell Haines, our owner, learned this trade at Los Angeles Trade-Technical College and spent the better part of two decades in the field before building Hearthstone Chimney Co. into what it is today. He and our crew have swept chimneys across Queens for years, including a long stretch of older two-families and co-ops along the Woodhaven Boulevard corridor where the brick flues tell their own complicated history. That history is written differently in Forest Hills Gardens, and we read it fluently.
We are not a Gelco-authorized dealer. We’re an independent service company that works on Gelco liners every week because Forest Hills homeowners call us when the manufacturer-affiliated shops can’t sort out a draft problem or don’t stock the right adapter for a four-pot stack. We carry Gelco sales & service parts - genuine 316L liner sections, top plates, and insulated wrap kits - because the stainless grade and weld quality are what let the liner survive Queens’ freeze-thaw cycles. For caps, crowns, and dampers, we’ll use a quality aftermarket part when it outperforms the OEM equivalent. No upsell. No surprises on the bill. The number on the estimate is the number on the invoice.
Every job ends with photos you can see and a plain-English verdict. Our 90-Day Done Right Promise is in writing, with no arguing. If it’s wrong, we’ll say so. If we fix it, it stays fixed.
Common Gelco Chimney Cleaning Problems We Solve in Forest Hills
- Liner-to-cap adapter corrosion in Forest Hills Gardens. Nor’easter rain and repeated freeze-thaw cycles drive water into the unsealed annular space between an older Gelco liner and a decorative multi-pot crown. The adapter ring rusts, the cap lifts, and suddenly you’ve got water running down the flue every spring. We see this every March on homes off Greenway South and Ingram Street.
- Flexible liner kinking at the smoke chamber offset. The 1920s Tudor Revival fireplaces in Forest Hills Gardens were built with wide smoke shelves and brick flues that jog behind them. A standard Gelco round liner can’t navigate that offset without binding. We convert to a Gelco Oval Flexible Liner where the geometry demands it, or we don’t take the job.
- Insulation wrap failure on exterior-mounted Gelco liners. The pre-war co-op buildings along Queens Boulevard feature massive shared masonry chimney systems on outside walls. Condensation forms inside a Gelco liner between heating cycles, and the wrap-style insulation breaks down from the inside out. We inspect for this with our Level 2 camera and replace the kit when the thermal rating has dropped.
- Bottom-plate and tee-snout leaks at gas appliance connections. Forest Hills Gardens homes converted from coal to gas decades ago, but the secondary flues were never sized for modern stainless terminations. The Gelco liner connects to the boiler or water heater with a loose fit, draft balance is off, and exhaust odors creep back into the house. We resize the termination or recommend a coordinated reline of the secondary flue.
- Draft imbalance from partial capping on multi-pot stacks. This one catches out-of-neighborhood crews every time. A Gelco Multi-Flue Cap installed on only the fireplace pot leaves the boiler and water heater pots open to wind pressure. The stack effect reverses. We solve it with a custom top plate that maintains equalized draft across all flues.
Gelco Service in Forest Hills: What Local Conditions Mean for Your Equipment
Here’s what you won’t find on any generic Gelco or Forest Hills page. Forest Hills Gardens’ signature three- and four-pot chimney stacks each serve a different flue - fireplace, boiler, water heater, and sometimes a capped incinerator stub left over from the 1950s. Capping or relining one without accounting for the others changes draft across the entire stack. An out-of-neighborhood crew sees a pretty terracotta pot, assumes it’s a single-appliance chimney, and gets it wrong. We’ve been called in after that mistake more than once.
On a Tudor Revival home off Greenway South, our Forest Hills Chimney Repair tech found a Gelco liner installed years earlier only on the fireplace flue while the adjacent boiler flue sat uncapped and unlined, pulling exhaust odors back into the living room on windy days. We pulled the Gelco liner, verified it wasn’t kinked at the smoke chamber offset, reinstalled it with a new insulated top plate and a custom four-pot multi-flue cap that restored balanced draft across all flues. The homeowner’s backdraft complaint stopped that same week.
Queens’ humid continental winters deliver repeated freeze-thaw cycles that penetrate the aging lime-based mortar joints on these century-old stacks, accelerating spalling and crown cracking beyond what newer brick construction would show. Spring and fall nor’easters then drive rain into those compromised crowns and flashing. For Forest Hills Gardens homeowners with Gelco liners, this means post-winter inspections aren’t optional - they’re where we catch the adapter corrosion and insulation wrap failure before they become liner replacements.
Gelco Models & Products We Service in Forest Hills
We stock and service the full Gelco flexible liner line for Forest Hills service area homes:
- Gelco Round Flexible Stainless Steel Liner - 316L alloy, single-flue, the standard for most Forest Hills Gardens fireplace relines where the flue run is straight or nearly so.
- Gelco Oval Flexible Liner - for tight masonry offsets in 1920s Tudor Revival smoke chambers where a round liner would kink and fail.
- Gelco Insulated Liner Kit - wrap-style, rated for exterior chimneys; critical for pre-war Queens Boulevard co-ops with shared stacks on outside walls.
- Gelco Multi-Flue Cap / Top Plate assemblies - custom-configured for three- and four-pot stacks; we fabricate or source the right top plate to maintain draft balance across all flues.
We keep genuine Gelco liner sections, top plates, and adapter components in stock for fast Forest Hills turnaround. If your Gelco liner is still structurally sound after our Level 2 inspection, we clean and re-terminate it. Replacement only when the liner has kinked, corroded through, or is undersized for the appliance it serves. That’s a square deal.
Gelco Service Pricing in Forest Hills
Chimney cleaning and inspection for a Gelco-lined system in Forest Hills typically runs $189-$289 for a standard single-flue sweep with Level 2 camera inspection and photo report. Multi-flue cap installation or replacement on a Forest Hills Gardens three- or four-pot stack ranges $340-$580 depending on pot spacing and whether custom fabrication is needed. Gelco liner repair or re-termination work falls between $420-$890 based on access, liner length, and whether the insulation wrap requires replacement.
What drives cost: height of stack, number of flues, condition of existing liner and hardware, and whether coordinated access is needed in a Queens Boulevard co-op. Every estimate includes the camera inspection, photo documentation, and plain-English verdict before any work begins. Our $89 Seasonal Tune-Up applies to qualifying systems. Seniors and veterans receive a permanent 5% discount.
Call (516) 531-6315 for an exact quote - estimates are free, and a live person answers every call.
Serving Forest Hills, NY - Our Local Coverage Area
We’re based in the Forest Hills 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 Forest Hills
A standard single-pot Gelco cap will not work on a Forest Hills Gardens multi-flue stack without causing draft imbalance. You need a custom multi-flue cap or top plate sized to your specific pot spacing and flue count, with screened vents proportioned to each appliance’s draft requirement. We measure on site and fabricate or source the right assembly. Call (516) 531-6315 to schedule a free evaluation.
Schedule a Level 2 camera inspection before the next burning season. We document the liner’s interior condition, check for kinks at smoke chamber offsets, verify adapter and cap integrity, and test draft performance. You’ll see the footage and get a plain verdict - repair, re-terminate, or replace. There’s no guesswork, and no charge for the estimate.
Yes. We’ve cleaned and inspected shared masonry chimney systems in Forest Hills co-ops for years. Coordinated access with building management is standard procedure for us. We document which flues are Gelco-lined, which remain terracotta, and whether the shared stack requires a coordinated maintenance plan. Our crew is background-checked and uniformed - building supers know us.
Leave them open and uncapped, and you risk moisture intrusion, wildlife entry, and draft reversal that can backdraft your gas appliances. Cap them without equalizing draft, and you can create the same problem. The right answer is usually a coordinated multi-flue cap that maintains proper draft across all pots, plus evaluation of whether the secondary flues need their own liners for modern gas appliances. We assess this with our camera and give you a prioritized plan.
No. We use vapor-permeable waterproofing compounds formulated for historic masonry - they allow the brick to breathe while shedding liquid water. The application avoids terracotta pot surfaces and Gelco stainless components. In fact, waterproofing the crown and exposed shoulders of a Forest Hills Gardens stack is often what extends the life of your Gelco liner by keeping freeze-thaw moisture away from the adapter ring. Call (516) 531-6315 for a free assessment of whether your stack needs it.
Service Areas Near Forest Hills
We sweep and service chimneys throughout central and eastern Queens, including Gelco service in Queens broadly, Gelco service in Jamaica to the south, plus Douglaston, Ozone Park, and Fresh Meadows. If you’re in a Forest Hills co-op, a Gardens Tudor, or anywhere nearby with Gelco equipment, we’re the crew that answers the phone with a live person and shows up when we say.
Book Your Gelco Service in Forest Hills Today
Call (516) 531-6315 now. A live person answers 24 hours a day, 7 days a week - not a voicemail, not a callback queue. We’ll book your free estimate, send a background-checked uniformed technician, and get your Gelco system inspected, cleaned, and documented with photos you can see. Most jobs are completed in a single visit. The 90-Day Done Right Promise covers everything we touch, in writing, no arguing.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Forest Hills and Queens since 1984.





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