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.
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After
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AfterFast, Reliable Chimney Liner & Rebuild Across Yonkers
Chimney liner replacement and partial or full rebuilds in Yonkers typically run $2,800-$8,500 depending on the flue count and whether the stack is freestanding or a party-wall shared between properties. Most liner installations and crown rebuilds are completed in a single visit after a Level 2 camera inspection confirms exactly what the flue needs.
We’ve been answering calls from Yonkers homeowners for over 42 years, and our crews know the city’s chimney stock intimately: the 1890-1940 brick two- and three-family row houses concentrated in Dunwoodie, Ludlow, Fleetwood, and Lowerre, the hilltop neighborhoods like Greystone and Dunwoodie Heights where winter wind drives hard down the Hudson Valley corridor, and the dense south-side blocks where a single party-wall chimney can carry flues for separately owned adjoining units. Our Chimney Liner & Rebuild team dispatches from our New York City office, and we carry the materials to finish most jobs without a return trip. Call (516) 927-2678 - a live person answers, 24 hours a day.
Why Hearthstone Chimney Co. Is Yonkers’s Preferred Chimney Liner & Rebuild Company
We’ve worked on Yonkers chimneys long enough to recognize a 1920s Ludlow brick stack from the roofline, and long enough to know that the worst liner sales in this city happen when a technician scopes from the top down without running a camera the full flue length. Our Level 2 inspections end with photos you can see and a plain-English verdict. No camera evidence, no recommendation - that’s the rule Russell Haines established when he founded Hearthstone in 1984, and it’s how we still operate.
Our technicians are background-checked, uniformed, and carry professional-grade materials from brands like DuraFlex, HeatShield, and Olympia Chimney on every truck. Most liner replacements and partial rebuilds are completed in a single visit. Our 90-Day Done Right Promise is in writing: if it’s not right, we come back, no arguing, no paperwork chase. The price we quote is the price on the invoice. And when you call (516) 927-2678, a live person answers - not a callback queue, not an app.
Our Chimney Liner & Rebuild Services in Yonkers
Stainless Steel Liner Installation
Yonkers’s original coal-era flues are oversized for modern low-BTU gas and oil appliances. A furnace dumped into a 12-by-12-inch flue built for a coal boiler runs cold, condenses moisture, and builds creosote fast. We install properly sized stainless steel liners - typically DuraFlex or Olympia Chimney components - that match the appliance’s output to the flue dimension. In a recent Bryn Mawr Park job, a 1928 two-family brick had a furnace flue drafting poorly in cold snaps; our camera showed spalled clay tiles and a 3-inch water heater dropped into a flue sized for the old coal boiler. We installed separate DuraFlex liners for the furnace and water heater, rebuilt the crown, and re-set the flashing. Draft problems gone. The neighbor was notified in writing of the shared-flue condition.
Flexible Liner for Tight Flues and Offset Chimneys
Some Yonkers row houses, especially in the tighter Greystone blocks, have chimney offsets where the flue shifts to dodge a stairwell or partition. Rigid liners won’t navigate these bends. We use flexible stainless liners that conform to the existing flue path without breaking into walls. The installation still gets the same camera verification: we document the full run before and after, and you see the footage. No guesswork about whether the liner seated properly at the offset.
Liner Replacement
Clay tile liners in Yonkers’s housing stock are 80-130 years old. Cracked and spalled sections are a near-universal finding during inspection, but not every crack means full replacement. We replace liners when the tile is actively deteriorating, when gaps between sections exceed what HeatShield cerfractory resurfacing can seal, or when the flue is unlined and an appliance is being vented directly into raw masonry. The decision is always backed by camera evidence you can see yourself. A typical liner replacement in Yonkers runs $2,800-$4,500 for a single-flue system, $4,200-$6,800 for a two-flue stack common in the city’s two-family houses.
Partial Rebuild
When the liner has failed but the exterior masonry is sound below the roofline, a partial rebuild addresses the crown, the top courses of brick, and the flue termination without dismantling the stack. This is common in Yonkers where the crown has cracked from freeze-thaw cycling but the wythes below are intact. We rebuild with proper wash slope and drip edge, install a cap with proper mesh screening, and make sure the new work ties into existing masonry with expansion joints that account for the temperature swing this city sees between January northwest winds and summer humidity. Partial rebuilds in Yonkers typically range $3,500-$5,500.
Full Chimney Rebuild
Some party-wall stacks in south Yonkers have deteriorated to the point where the exterior shell is compromised: spalled brick, eroded mortar joints, and multiple flues with failed liners. A full rebuild dismantles to a sound base and reconstructs with matching brick where possible, new flue liners sized to current appliances, and a crown engineered for the stack’s exposure. Full rebuilds are the upper end of our pricing, typically $6,500-$8,500 for a two-flue Yonkers stack, and we never recommend one without documentation that shows why spot repair won’t suffice.
What happens when you call
- 1
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 stock and install professional-grade materials from Gelco, Olympia Chimney, and Famco - no builder-grade substitutes. Gelco caps and screening hold up to the wind exposure on hilltop chimneys in Greystone and Dunwoodie Heights. Olympia Chimney’s stainless liners carry the UL listings required for insurance compliance on Yonkers rental properties. Famco components give us fast turnaround on custom termination fittings when a party-wall stack needs a configuration that off-the-shelf caps won’t accommodate. Our trucks carry the common sizes, so most Yonkers liner jobs don’t wait on parts.
Common Chimney Liner & Rebuild Problems We See in Yonkers Homes
- Spalled clay tiles at mortar joints. The 80-130-year-old clay tile liners in Yonkers’s 1890-1940 housing stock routinely crack and spall at the joints, creating gaps that let exhaust leak into the chimney cavity. A visual look from the roof can’t distinguish surface spalling from a through-crack; only a camera inspection shows the difference.
- Oversized flues running cold and wet. Original coal-furnace flues in Ludlow and Fleetwood row houses are massively oversized for modern low-BTU appliances. The flue gas cools before it exits, condensing moisture and building first-degree creosote that can glaze to third-degree by February. A correctly sized liner fixes the draft and the condensation.
- Wind-driven downdraft on hilltop chimneys. Greystone and Dunwoodie Heights sit high enough to catch sustained northwest winter winds funneled up the Hudson Valley. A liner or cap sized for a calm site can backdraft during these events. We specify wind-resistant caps and proper termination height based on the specific exposure.
- Cross-property liability in party-wall stacks. In dense south and central Yonkers neighborhoods, a single masonry chimney can carry flues for two or more separately owned row houses. A liner defect scoped in one owner’s stack - corroded clay tiles, missing mortar joints, an appliance vented into an oversized 1920s flue - can be simultaneously leaking carbon monoxide into the neighbor’s unit. Our liner estimates always include camera evidence of what’s happening on the other side of the party wall.
Pricing for Chimney Liner & Rebuild in Yonkers, NY
| Service | Typical Range in Yonkers |
|---|---|
| Single-flue stainless liner replacement | $2,800 - $4,500 |
| Two-flue liner replacement (common in two-family homes) | $4,200 - $6,800 |
| Partial rebuild (crown, top courses, cap) | $3,500 - $5,500 |
| Full chimney rebuild with new liners | $6,500 - $8,500 |
| Level 2 camera inspection with photo report | $289 - $389 |
What moves a job toward the higher end: multiple flues, party-wall access complications, scaffold requirements for tall stacks, and the degree of masonry deterioration. What we don’t do: quote a liner from the driveway without a camera run, or recommend work that can safely wait. If your clay tiles have minor surface spalling and the flue is otherwise sound, we’ll tell you. Call (516) 927-2678 for an exact quote - estimates are free.
We Also Serve Cities Near Yonkers
Our crews work throughout southern Westchester and the adjacent Bronx. We regularly handle liner and rebuild calls from Bronxville, Tuckahoe, Pelham, and New Rochelle - towns with their own distinct housing stock and chimney configurations, but the same standard of camera-documented inspection and upfront pricing. If you’re in one of these communities and need a second opinion on a liner quote you’ve already received, we offer a free second opinion on any written estimate.
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 - Chimney Liner & Rebuild in Yonkers
Yes. In Yonkers’s party-wall and shared-stack configurations, both flues must be camera-inspected because a liner defect in one flue can affect draft and safety in the other. We document the condition of each flue separately and, if the stack serves an adjoining property, we notify that owner in writing of any shared-flue condition that creates cross-property liability. Call (516) 927-2678 to schedule a Level 2 inspection for both flues - estimates are free.
The flue was built for a coal boiler with high exhaust temperatures and strong natural buoyancy; your new low-BTU furnace produces cooler, slower exhaust that loses momentum in the oversized space. The result is cold, wet flue gas that condenses on the walls and often backdrafts. A properly sized stainless liner reduces the flue volume to match the appliance’s output, restoring adequate draft velocity and eliminating the condensation that causes creosote buildup. We size liners based on the appliance’s BTU input and venting category, not the old flue dimension.
Yes, and the distinction matters. First-degree creosote is sooty, powdery, and removable with standard sweeping. Third-degree glazed creosote is hardened, tar-like, and requires rotary mechanical removal or chemical treatment - sometimes both. Our camera inspection shows the creosote’s location, thickness, and adherence before we quote any work. Glazed creosote alone does not mean you need a rebuild; it means you need proper removal and, usually, a correctly sized liner to prevent re-formation. We don’t quote rebuilds for creosote that sweeping can fix.
Often both, but the root cause is wind-driven downdraft pressure that overwhelms a weak natural draft. The hilltop exposure in Greystone catches northwest winds funneled up the Hudson Valley corridor; a short cap or an oversized flue gives that wind an easy entry. We diagnose with a smoke test and draft gauge during actual wind conditions, then specify a taller termination, a wind-resistant cap design, or a liner reduction - or a combination - based on what the test shows. Guessing wastes money. We measure first.
Yes, and in Yonkers’s housing stock it’s especially important. Even if you never light the fireplace, your furnace or water heater vents through that flue continuously through the heating season. The city’s 80-130-year-old clay tile liners deteriorate from thermal cycling and moisture whether the fireplace sees use or not, and an appliance-only flue can fail without any obvious symptom until a draft problem or carbon monoxide event. Annual Level 2 inspection with a camera is the standard we recommend for every Yonkers chimney serving any fuel-burning appliance. Call (516) 927-2678 to schedule - estimates are free.
Ready to get your Yonkers chimney liner or rebuild done right? Call Hearthstone Chimney Co. at (516) 927-2678. A live person will answer, 24 hours a day. We’ll schedule your Level 2 camera inspection, show you exactly what your flue needs, and quote honest upfront pricing with our 90-Day Done Right Promise in writing. No camera evidence, no recommendation. That’s how we’ve worked for over 42 years.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Yonkers since 1984.