Masonry repair
Sweep & inspection
Caps & crownsLevel 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.
Fast, Reliable Gas Fireplace Repair Across Yonkers
Gas fireplace repair in Yonkers typically runs $175 – $450 for most common fixes, and the real risk in this city is rarely the gas valve: it’s the chimney behind the fireplace. Yonkers is full of pre-WWII brick row houses and three-story walk-ups where gas fireplaces vent into original coal-era flues that were never designed for modern gas exhaust. That’s our specialty. If your fireplace won’t light, drafts poorly, or smells like something is off, call us at (914) 233-3156 and we’ll send a technician who actually knows Yonkers chimneys.
Why Hadley Chimney Yonkers Is Yonkers’s Preferred Gas Fireplace Repair Company
Hadley Chimney Sweep has been in the chimney trade since 2003, and our Gas Fireplace Repair team works in Yonkers every week. We know what happens when a gas fireplace on a Park Hill hillside vents into a clay-tile flue with missing mortar joints. We know which Getty Square walk-ups still have their original coal-era stacks. That local familiarity means we arrive already understanding the likely failure mode, not figuring it out from scratch on your roof.
Every Yonkers job gets the same commitment: a written price before any work starts, a written guarantee on every repair, and before-and-after photos so you can see exactly what was fixed. Our technicians are background-checked, uniformed, and arrive in a tracked window through The Relay Visibility Guarantee, so there’s no four-hour wait wondering if anyone is coming. If a repair fails within 365 days, we return and make it right free, as part of our 365-Day Done Right Promise, backed in writing.
Cory Mitchell leads our Yonkers crews with a simple rule: no recommendation without camera evidence. If a liner looks cracked, you’ll see the photo. If a cap is missing, you’ll see that too. If the flue is fine, we’ll tell you and save your money. That’s the standard we hold ourselves to in every Yonkers neighborhood, from Ludlow to Crestwood.
Styles & brands we work with
Our Gas Fireplace Repair Services in Yonkers
Flue Liner Inspection and Relining
Most gas fireplace problems in Yonkers start inside the flue, not the fireplace itself. In older homes around Park Hill and Getty Square, gas appliances commonly vent into unlined or clay-tile flues built for coal smoke a century ago. Modern gas exhaust is cooler and wetter than coal smoke ever was, and the resulting acidic condensation eats mortar joints from the inside. We run a camera up the flue and show you exactly what’s there. If relining is needed, we quote a properly sized stainless steel liner, usually DuraFlex, and nothing gets installed without you seeing the damage first.
Chimney Cap Installation and Replacement
Yonkers row houses and walk-ups have a lot of chimneys without caps, especially in the older housing stock near South Broadway. A missing cap lets rain, squirrels, and leaves into the flue. Rain mixes with creosote and mortar dust into a slurry that blocks draft and corrodes the flue liner. We install galvanized or stainless caps sized to your flue, and in Yonkers we match the cap to the liner when a reline is also needed. This is a same-visit fix in most cases.
Draft and Venting Diagnosis
Poor draft in a Yonkers gas fireplace usually means something is blocking the flue or the chimney is too short for the roofline. Steep hillside homes in neighborhoods like Park Hill often have chimneys that sit below the peak of an adjacent roof, which creates a negative pressure zone that pushes exhaust back into the house. We diagnose draft with a smoke test and camera scope, then fix the actual cause: cap, liner, height, or a blocked smoke shelf. No guessing, no parts replaced on a hunch.
Gas Valve, Pilot, and Control Repair
Not every Yonkers call is a chimney problem. Gas fireplaces also fail at the valve, pilot assembly, thermocouple, or remote receiver. We repair all of those. But here’s the thing: in a pre-WWII Yonkers house, we always check the flue at the same visit, because a fireplace that cycles on and off is often fighting a bad draft, and a new valve won’t fix that. One visit, both systems checked, written price for anything we recommend.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Yonkers
We service gas fireplaces across every major brand you’ll find in Yonkers homes, from older Majestic and Heatilator units in Park Hill walk-ups to modern direct-vent inserts in the newer condos along the waterfront. For the chimney side of the job, we stock and install materials from DuraFlex, HeatShield, and Olympia Chimney, because these are the brands chimney professionals actually rely on for relining and repair. No off-brand parts from whatever is cheapest on the truck. If your fireplace uses a specific brand of liner or cap, we’ll tell you up front what it is and why it’s right for your Yonkers chimney.
Common Gas Fireplace Repair Problems We See in Yonkers Homes
- Clay-tile flues with cracked or missing sections: In pre-WWII Yonkers single- and multi-family homes, gas fireplaces often share a flue with a boiler or water heater. The clay tiles crack from years of temperature swings, and that crack is where carbon monoxide escapes into the house. This is the single most common problem we document with our camera scope in Yonkers.
- Missing or corroded chimney caps: Park Hill and Getty Square three-story walk-ups were built before modern caps were standard. Rain gets in, animals nest, and the draft fails. A $200 cap replacement often solves a problem that would otherwise turn into a $2,000 reline.
- Deteriorated mortar joints on shared party walls: Yonkers hillside row houses have shallow, shared chimney walls. Water penetrates through spalling mortar and sits between units, causing hidden damage that only a Level 2 camera inspection finds. By the time you see staining on the ceiling, the damage is already inside the wall.
- Gas fireplaces vented into flues never designed for them: Some Yonkers homeowners convert an old wood-burning fireplace to gas and tap into a coal-era flue without relining. The result is acidic condensation eroding the mortar from the inside, often into the shared wall. We fix this with a properly sized stainless steel liner, and we show you the before-and-after photos.
See the difference
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After
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AfterPricing for Gas Fireplace Repair in Yonkers, NY
Here’s what Yonkers homeowners can expect to pay. A service call for a gas fireplace that won’t light or drafts poorly runs $175 – $225, including diagnostics. Common repairs like a thermocouple or pilot assembly replacement typically land at $250 – $450. A chimney cap replacement in Yonkers runs $200 – $500 depending on flue size and material. Flue relining is the big one: $2,200 – $4,800 for a full stainless steel liner in a typical Yonkers walk-up or row house, with the higher end reflecting taller three-story stacks and narrow coal-era flues that require more labor. No work starts without a written price, and your estimate is free. Call (914) 233-3156 if you want numbers specific to your chimney.
We Also Serve Cities Near Yonkers
Our crews work throughout Yonkers, from Riverdale Avenue to McLean Avenue, and we regularly cross into neighboring southern Westchester towns. If you’re in Yonkers or nearby in Tuckahoe, Mount Vernon, Eastchester, or Pelham, the same Hadley standard applies: written price first, camera proof always, a tracked arrival window, and a live person on the phone whenever you call.
Serving Yonkers, NY - Our Local Coverage Area
We’re based in the Yonkers 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 – Gas Fireplace Repair in Yonkers
Because in Yonkers, the chimney itself is frequently the actual problem, and no reputable company should quote you a gas valve replacement without checking what’s behind it. Coal-era flues were built for hot coal smoke, not the cooler, wetter exhaust from a modern gas fireplace. That moisture condenses inside the flue, creating acidic runoff that eats clay tiles and mortar joints. If we quote a repair without scoping the liner, we’re guessing. In the Park Hill and Getty Square walk-ups especially, we scope the flue first, show you the camera footage, and only then write a price for what’s actually needed.
The fix is a correctly sized cap, and in many Yonkers walk-ups it also means checking the flue height relative to the roofline. On steep hillside blocks, a chimney that sits below an adjacent roof peak can create a negative pressure zone that makes draft erratic even with a cap in place. We start with a cap replacement and a smoke test. If draft is still poor, we measure the draw and check whether a liner or height extension is needed. Most Park Hill jobs are cap-first; we don’t sell a reline until the camera shows you it’s required.
Yes, and this is one of the more common jobs we do in Yonkers. Shared party walls mean the flue has neighbors on one or both sides, so precision matters. We use a camera to map the existing flue dimensions, then install a stainless steel liner, usually DuraFlex, sized to the narrow coal-era flue. The liner is pulled through, sealed top and bottom, and documented with photos from start to finish. You’ll see the old cracked clay tile and the new liner in your final report. No work starts until you’ve approved the written estimate.
Freeze-thaw is a bigger problem in Yonkers than most homeowners realize. Brick chimneys on hillside homes take on water through cracked mortar joints, and every winter the water freezes, expands, and widens the cracks. Over 20 or 30 cycles, a hairline crack becomes a spalled brick and a leak into the wall. Gas fireplaces make it worse, because the exhaust carries moisture into a flue that’s already compromised. That’s why we recommend a camera inspection any time you see water staining, crumbling mortar, or efflorescence, the white powdery salt deposits on brickwork, near your fireplace or chimney breast.
You need at least a Level 1 visual inspection every year if you use the fireplace at all, and many Yonkers homes tell us they haven’t had one in a decade. Gas fireplaces still produce exhaust, and pre-WWII chimneys degrade even when unused because water gets in through missing caps and bad mortar. If you use the fireplace occasionally, we suggest an annual check. If you’ve never had a camera scope done on a coal-era chimney, do one once and you’ll know exactly where you stand. Call (914) 233-3156 to schedule, and you’ll get a written quote before anything is done.
Contact Hadley Chimney Yonkers for Gas Fireplace Repair
If your gas fireplace is acting up, drafting poorly, or you just want to know what’s actually inside that century-old Yonkers chimney, call us. You’ll reach a live person at (914) 233-3156, day or night. We’ll schedule a tracked arrival, do the camera inspection, show you the photos, and hand you a written price before any work starts. That’s how gas fireplace repair in Yonkers should work.
Written by Cory Mitchell, Owner at Hadley Chimney Yonkers, serving Yonkers since 2003.