Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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.
Fast, Reliable Fireplace Repair Across Upper West Side
Fireplace repair in Upper West Side usually falls into two camps: minor work like a damper adjustment or pilot light fix, and more involved repairs like flue resurfacing or firebox rebuilding. For a gas fireplace, most Upper West Side jobs run $180 – $425. A wood-burning firebox repair typically lands between $350 and $900 depending on how much brick needs re-pointing or replacing. We give every homeowner a written price before any work starts, and every repair is covered by our written guarantee. If a covered repair fails inside the guarantee period, we return and fix it at no charge. That’s the 365-Day Done Right Promise, and it applies to every fireplace we touch in Upper West Side. Call (315) 644-2982 and you’ll reach a live person, any hour, any day.

Why Ashby Chimney New York Is Upper West Side’s Preferred Fireplace Repair Company
We’ve been at this since 2002, and the thing that separates us on the Upper West Side is how we handle the old construction. Most companies send a technician who looks at the firebox and quotes a number. We send someone who understands prewar flues, shared chimney stacks, and why a decorative terra-cotta crown on West End Avenue cracks differently than one on a newer building downtown. Nathan Corliss leads our team, and his rule is simple: show the homeowner the camera footage before recommending any repair. You see exactly what we see. No mystery, no upsell.
Upper West Side customers tell us the same things over and over: they’ve had no-shows, price-switching at the door, or a repair that failed weeks later. We answer the phone with a live person 24/7. We show up in the arrival window we gave you. The price we quote at the door is the price on the invoice. And if our repair doesn’t hold, we come back free. That consistency is why building supers and co-op boards across the neighborhood keep our number on file.
Styles & brands we work with





Wood Stove Installation in Upper West Side
Wood Stove Installation in Upper West Side is a specific kind of project. These are rarely new-construction installs. More often, a homeowner in a brownstone or row house off Columbus Avenue wants to convert an open fireplace into a sealed, efficient wood-burning stove. The job starts with measuring the existing firebox and confirming the flue is sized correctly for the stove’s exhaust volume. In older Upper West Side buildings, the flue may be unlined or have a clay tile liner that’s cracked, and it’s not safe to connect a modern stove to a compromised flue. We inspect with a camera first, then tell you honestly whether the existing stack can handle the appliance.
A typical wood stove install in Upper West Side runs $1,800 – $4,200 depending on the stove model and whether we need to run a new liner. Labor, permits where required, and the liner are included in the written quote. We do not surprise you with add-ons after the job begins.
Liner Requirements for Older Flues
Many Upper West Side rowhouses from the 1890s through 1930s were built with flues sized for open fireplaces, not modern stoves. A stove needs a smaller, properly insulated liner to draft correctly and keep creosote from condensing inside the flue. We use DuraFlex and Olympia Chimney liners, and we show you the camera footage of the existing flue before recommending a liner.
Clearance and Hearth Work
Wood stoves need proper clearance to combustibles, which in a prewar parlor floor often means adding a non-combustible hearth pad or extending the existing hearth. We handle that as part of the install, and we’ll tell you in writing what the clearance requirements are for the stove you choose.
Gas Fireplace Repair in Upper West Side
Gas Fireplace Repair in Upper West Side usually means one of three things: a pilot light that won’t stay lit, a burner that won’t ignite evenly, or a venting problem in a prewar chimney stack. In many Upper West Side buildings, gas fireplaces were retrofitted into fireboxes originally designed for wood. That creates specific issues: the flue is oversized for the gas appliance, which can cause poor drafting, or the original damper was never properly removed and now blocks the vent path. We diagnose with a camera and a combustion analyzer, so we know exactly what’s failing before we recommend a fix.
Most gas fireplace repairs in Upper West Side land between $180 and $425. Pilot light replacement, thermocouple or thermopile replacement, burner cleaning, and gas valve adjustment all fall within that range. If the venting system inside the chimney needs repair, the price goes up based on what the camera shows.
Pilot Light Repair and Gas Valve Service
A pilot light that goes out repeatedly is often a failing thermocouple, and that’s a straightforward fix. If the gas valve itself is sticking, it needs replacement, which is a bigger job but still common. We carry Famco and Copperfield gas components in our vans, so we usually complete the repair in one visit.

Venting and Draft Checks in Prewar Chimneys
Before we replace any part, we check the vent. On the Upper West Side, shared chimney stacks mean your gas fireplace may be venting into a flue that also serves other units. If that flue has debris, a bird nest, or a cracked section, combustion gases don’t leave the building properly. We coordinate roof access with your super or board so we can inspect the full stack, not just what’s visible from your living room.
Trusted Brands We Service in Upper West Side
We service and repair all major fireplace and chimney brands, and we keep Upper West Side jobs moving by stocking the most common replacement parts locally. That includes DuraFlex liners, Olympia Chimney components, Famco gas fittings, and Copperfield dampers. When a repair calls for a part we don’t have on the truck, our local supply relationships get it fast. No waiting weeks for a backordered bracket while your fireplace sits unusable through another Nor’easter. We also respect that many Upper West Side buildings have board rules about appearance and materials, so we’ll match finishes and keep the work discreet.
See the difference
Before
After
Before
After
Before
AfterCommon Fireplace Repair Problems We See in Upper West Side Homes
- Clay tile flue liners that have spalled. Freeze-thaw cycles are rough on old clay tiles, especially in exposed chimney stacks on 1880s – 1930s buildings. Camera footage shows the cracked or fallen tile clearly, and that’s what we use to justify a liner repair or replacement rather than a verbal claim.
- Dampers replaced without checking the shared flue above. In prewar co-ops, your damper may work fine mechanically, but smoke backs up because another unit’s blockage is pressurizing the shared stack. We inspect the entire flue before changing a damper.
- Decorative terra-cotta crowns repointed with the wrong mortar. Standard mortar is too rigid and traps moisture. The next freeze cycle pops the mortar loose and you’re back where you started. We use a breathable mix on these crowns, and we explain the difference.
- Gas logs venting into flues built for wood. The flue diameter is too large, so exhaust cools and stalls before it exits. The result is soot staining around the fireplace and a gas smell that lingers. This often requires a properly sized liner, not just a cleaned vent.
Pricing for Fireplace Repair in Upper West Side, NY
Here’s straight talk on Upper West Side pricing. A gas fireplace service call and repair runs $180 – $425 for most common fixes. Damper repair or replacement: $250 – $600. Firebox repair, meaning brick and mortar work: $350 – $900 for a typical parlor-level fireplace. Flue liner resurfacing with HeatShield or a similar system: $1,200 – $3,200 depending on flue height and access. Wood stove installation: $1,800 – $4,200 all-in. The camera inspection is included with every repair visit, so you see the evidence before you approve any bill. Call (315) 644-2982 for a written, no-obligation estimate. The price we quote is the price you pay.
We Also Serve Cities Near Upper West Side
Our crews work throughout Manhattan and beyond. If you’re in New York, East New York, Manhattan, or Midtown Manhattan, we can help with Fireplace Repair services. This page covers Upper West Side specifically, but our scheduling covers the wider metro area.
Serving Upper West Side, NY - Our Local Coverage Area
We’re based in the Upper West Side 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 About Fireplace Repair in Upper West Side
Yes, in most prewar co-ops and many condos, yes. Any work that touches the chimney stack, roof access, or shared building systems typically requires board approval or at least written notice to the super or managing agent. Interior work inside your own firebox, like a damper replacement or pilot light repair, usually does not need board sign-off. But if the repair affects the shared flue, which is common when one unit’s issue affects neighbors, the board wants to know. We help you prepare the scope of work, the camera images, and the written estimate so the board sees exactly what’s proposed. Call (315) 644-2982 and we’ll walk you through what your particular building is likely to require.
The signs are subtle from inside your home: a musty smell after rain, bits of clay tile at the bottom of the firebox, or smoke that drifts back into the room. You cannot see a crack in the flue from the living room. The reliable way is a camera inspection, which we include with every repair visit. On the Upper West Side, where many flues are 100-plus years old and exposed to freeze-thaw cycles, spalled clay tiles are the single most common repair we document. We’ll show you the footage on our screen, in your apartment, before recommending anything. If the liner is intact, we’ll tell you that too and send you the image file.
Almost always, yes. Most gas fireplace repairs, like pilot assembly work, burner cleaning, or valve replacement, happen entirely inside your apartment. There’s no noise or access impact on neighbors. The exception is when the venting path inside the shared chimney needs work, such as a liner installation through an existing flue. That requires roof access and coordination with the building, but even then, work inside neighboring units is rare. We schedule roof work with your super, and we keep the roof access window tight. Nathan Corliss’s crew has done enough of these in Upper West Side co-ops to know how to move through a building without leaving a trace.
Use a breathable, lime-based mortar, not standard Portland cement mortar. The brownstone and terra-cotta on Upper West Side chimney crowns absorb moisture. If you seal that moisture behind a rigid, non-breathable mortar, the next freeze-thaw cycle forces the mortar out and spalls the surface. That’s the most common failure we see when a general contractor or handyman does crown work. We remove the loose material, rebuild the crown’s taper so water sheds away from the flue, and repoint with a compatible lime mix. The repair is documented with before and after photos, and it’s covered by our written guarantee. Call (315) 644-2982 for a free estimate on crown repointing.
The smell usually comes from one of four things: a negative air pressure issue in your apartment, a shared flue with a blockage or downdraft from another unit, creosote-saturated masonry from decades of wood burning, or a failing damper that doesn’t seal. In Upper West Side prewar buildings, the shared stack is often the culprit, because odors travel sideways between connected flues. We diagnose this with a camera inspection and a pressure test. If it’s a creosote saturation issue, a proper cleaning is often enough. If it’s the shared stack, the fix is usually a liner or damper seal repair. We’ll show you the evidence either way.
Written by Nathan Corliss, Owner at Ashby Chimney New York, serving Upper West Side since 2002.
If your fireplace in Upper West Side needs work, call (315) 644-2982. You’ll talk to a person, get a written price, and we’ll show you the camera footage before any repair starts.