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.
Fast, Reliable Fireplace Services Across Unionport
Fireplace service in Unionport, NY typically costs $165-$320 for a standard cleaning and inspection, $240-$680 for damper or firebox repair, and $1,900-$4,200 when a fireplace conversion or liner replacement is required. Those are written-price ranges, not phone estimates. We put the number in front of you before any work starts, then we document what we find with a camera. If you live in one of the brick rowhouses or walk-ups between White Plains Road and the Bronx River, call (980) 580-8641 and we’ll schedule a sweep and a Level 2 camera inspection.
Unionport is not a suburban chimney market. Most of what we service here hides behind century-old brick: terracotta flue liners sized for coal, converted to oil, converted again to gas, and now venting modern heating appliances through dimensions that were never designed for them. That changes what a “routine” fireplace service involves. Our techs know the difference, and our Unionport crews carry the inspection standard to prove it: NFPA 211 Level 2, camera down the flue, written price before work starts, photo record when it’s done.
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.
Why Emberly Chimney Cleaners Is Unionport’s Preferred Fireplace Services Company
Unionport’s housing stock is dominated by attached brick rowhouses and three-to-five-story walk-up apartment buildings built between roughly 1920 and 1950. Those buildings share walls, share chimney chases, and in a lot of cases share flues. That’s the reality our techs work in every week. A chimney in a detached single-family home in Westchester is one system. A chimney on a Unionport side street can be serving two or three apartments’ heating appliances through one terracotta chase, and nobody has looked at the interior of that flue in decades. We know to look.
Our Fireplace Services team works Unionport blocks regularly, and we’ve built a strong reputation with property owners and managing agents who appreciate one thing above all: evidence. Every job includes a camera-scan inspection that runs continuously on every visit, documenting liner condition, thimble connections, draft readings, and creosote or soot class. Clause 4 of the Haven Standard requires a photo record on every job. That archive has been running since 2009 and now covers more than 38,000 chimneys inspected and cleaned. When we tell a Unionport homeowner their flue has a cracked liner at the second-floor offset, we show them the photo of the crack.
Response time to Unionport is typically next-day for non-emergency calls, with live phone support running 24 hours a day, seven days a week. Calls are answered by a person, not a voicemail. When a tech is dispatched, you get their license number on the page and a text when they’re on the way. No door-knocking surprises, no “we’ll call you back with pricing.”
Our Fireplace Services in Unionport

Fireplace Conversion
Fireplace conversion is one of the most common requests we field in Unionport, usually from owners of 1920s-1930s rowhouses who want to stop using a wood-burning fireplace that hasn’t been properly maintained in years. The honest answer we give most of them: converting to gas rarely means just dropping in a log set. In Unionport’s attached housing, the existing flue was sized for coal and may have been converted two or three times already. A gas insert or vented log set needs a correctly sized, code-compliant liner, and that often means a full liner replacement with materials we source from DuraFlex through Haven’s buying network, which keeps customer prices honest. Budget $2,200-$4,200 for a properly done conversion in Unionport, including the DOB filing if shared flue conditions require it.

Firebox Repair
Fireboxes in Unionport homes take a beating from decades of use and poor ventilation. The dense urban canyon effect of the eastern Bronx creates unpredictable downdraft conditions, which pushes heat and combustion byproducts back against firebrick and mortar joints. We see spalling (brick face flaking away), cracked refractory panels, and failed mortar beds. Repairing a firebox in a Unionport rowhouse runs $240-$680 depending on the extent of the damage. If the lintel bar is rusted through from condensation, that’s an additional repair we’ll document and put in writing before touching anything.

Damper Repair
Dampers in older Unionport fireplaces are frequently rusted open or rusted shut. A damper stuck open means heated air from your apartment pours up the flue all winter. A damper stuck shut means smoke backs up into the living room the first time you light a fire. Neither is a five-minute fix on these older units. We inspect the damper frame, the throat, and the surrounding smoke chamber, then give you a written repair or replacement price. Most damper repairs on Unionport properties run $180-$420. If the smoke chamber needs parging (re-coating the rough masonry walls above the damper), that’s quoted separately and shown to you on camera.

Wood Burning Fireplace Service
Not every Unionport home has converted to gas. Some owners still burn wood a few times each season, usually around the holidays. What we tell them is specific: if your home was built before 1950 and the flue still has its original terracotta liner, you need to be honest about what’s in there before you light anything. Creosote class matters. Class I is a light dusting. Class III is a hard, glazed, tar-like layer that burns like fuel. We see Class III in Unionport fireplaces that were used heavily and never swept. A standard wood fireplace cleaning with a Level 2 camera inspection runs $165-$285 in Unionport, and if we find Class III creosote or a cracked liner, we’ll pause, show you the footage, and explain what can wait and what can’t.

Before
AfterTrusted Brands We Service in Unionport
We work on all major fireplace brands and have extensive experience with equipment common in Unionport’s converted rowhouses and walk-ups. That includes gas log sets, inserts, and dampers from Gelco and Olympia Chimney, plus caps and termination systems from Famco and Copperfield. Because we install these materials regularly across the eastern Bronx, our techs carry the common parts and connectors needed for most Unionport jobs, which means shorter turnaround when a repair requires a replacement component. We don’t use off-brand substitutes. We use what we’d put in our own chimneys.
Common Fireplace Problems We See in Unionport Homes

- Shared flues on illegal configurations. A single chimney chase serving two or three apartments’ heating appliances violates current NYC code, but it’s everywhere in Unionport’s older walk-ups. We routinely find this on “routine” cleanings. Cleaning one apartment’s fireplace or boiler vent without addressing the shared-chase problem leaves the whole building exposed.
- Coal-era cast-iron thimbles catching a brush. The base of many Unionport flues still has the original cast-iron thimble connection from the coal furnace days. A cleaning brush can bond to that lip and crack an already-spalling clay liner. Our techs inspect before they sweep, which is why we run a camera first.
- Condensation-driven liner deterioration. High-efficiency gas boilers vent at lower temperatures than the oil furnaces they replaced. That means more condensation inside the flue, which eats away at old terracotta and mortar joints. Unionport’s long heating season (continuous boiler operation from November through March) accelerates this.
- Draft reversal from the urban canyon effect. Dense block development on tight streets creates unpredictable wind patterns. What looks like a perfectly good fireplace can back-draft badly when the wind comes from a certain direction. We test draft before and after any cap installation or liner work, including draft at every thimble if a flue serves multiple units.
Pricing for Fireplace Services in Unionport, NY
Here’s what you can expect to pay in Unionport, in writing:
- Fireplace cleaning and Level 2 camera inspection: $165-$285
- Damper repair or replacement: $180-$420
- Firebox repair (refractory panels, mortar joints, lintel): $240-$680
- Fireplace conversion to gas (including liner if needed): $2,200-$4,200
- Chimney cap installation or replacement: $190-$460
What affects the price in Unionport specifically is access. Rooftop access on a three-to-five-story walk-up takes longer than a single-family rowhouse. Shared flue conditions that require a DOB filing add paperwork time. If the flue needs a liner conversion, materials come from DuraFlex, HeatShield, or Gelco depending on the application, and we write that scope and price down before we start. Call (980) 580-8641 for a free estimate. The price we quote is the price you pay. Written before work starts, every time, no exceptions.
We Also Serve Cities Near Unionport

In addition to our regular work here, we provide fireplace services throughout the surrounding area, including Fireplace Services in Unionport and nearby New York City, Brooklyn, Queens, and Manhattan. Dispatch and scheduling are coordinated from our New York City office, with crews serving Unionport locally. If you own property in any of these areas, the same written-price, camera-documented standard applies.
Serving Unionport, NY - Our Local Coverage Area
We’re based in the Unionport 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 - Fireplace Services in Unionport

Because Unionport’s 1920s-1950s attached rowhouses and small walk-ups frequently run multiple apartments’ heating appliances into a single chimney chase on shared flues. That configuration violates current NYC code. Before we can safely cap or reline a fireplace in that situation, a DOB filing is required to document the shared-venting condition and bring each appliance onto its own code-compliant vent. This isn’t optional, and a company that skips it is exposing you and your neighbors to cross-contamination risk. Call (980) 580-8641 and we’ll walk you through what we found, what it means, and what the filing involves.

Yes. High-efficiency gas boilers vent at lower temperatures than the oil furnaces they replaced, which produces more condensation inside the flue. That condensation soaks into old terracotta liners and mortar joints, causing them to deteriorate faster. In Unionport, where boilers run continuously from November through March, this process accelerates. The result is spalling clay liners and cracked flue tiles that we find on camera inspections during what was supposed to be a simple fireplace cleaning. We’ll show you the photo. If the liner is compromised, we quote a DuraFlex liner conversion in writing.

The most common failure is a cracked clay liner at the second-floor offset, usually discovered when we run a Level 2 camera inspection on a flue that hasn’t been seen internally in decades. Second to that is the illegal shared-chase configuration where two gas boilers vent into one terracotta flue. On a block off White Plains Road, we pulled a Famco vacuum cap from a three-story walk-up and found two gas boilers venting into one terracotta-tile flue, the right-side thimble patched with foil tape and the left spalling badly. Our tech confirmed the shared chase and the cracked liner on camera, documented the draft readings, and filed the DOB paperwork before quoting a liner conversion to separate the vents. That’s a typical Unionport discovery.

Yes, and measurably. The dense block development in Unionport creates wind patterns that don’t behave like open-suburb airflow. Buildings close together channel wind unpredictably, and we’ve documented draft reversal in reasonably maintained fireplaces when the wind shifts. That’s why we test draft before and after any cap installation or liner work, including draft at every thimble if a flue serves multiple units. A new cap installed on a flue serving two apartments without first verifying draft at every thimble can create cross-contamination where one unit’s exhaust pushes into the other. We don’t skip that step. Call (980) 580-8641 to schedule a draft test and full inspection.

Sometimes, but not as often as we’d like. It depends on what the camera shows. If your existing flue is intact, properly sized for a gas appliance, and not shared with another unit, a direct-vent gas insert can sometimes be installed without a full liner replacement. But in Unionport’s attached housing, we often find the existing flue is oversized, shared, or cracked, which means a liner replacement is required by code and by common sense. We’ll show you the camera footage and tell you plainly which path applies. Budget $2,200-$4,200 for a properly done conversion if a liner is required. Call (980) 580-8641 for a written quote before you decide.

Contact Emberly Chimney Cleaners in Unionport
If you own a rowhouse or walk-up in Unionport and you want someone to actually look at your fireplace flue before quoting a price, call (980) 580-8641. We’ll schedule a Level 2 camera inspection, give you a written price before any work starts, and leave you with a documented photo record of everything we found. Could the news be bad? Sometimes it is. But you’ll have the evidence to see it yourself, and a written plan to fix it. We can also provide a free second opinion on any written estimate you’ve already received. If it’s not done right, we make it right, for 365 days after the job. Call today.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners, serving Unionport under the Haven Standard since 2009.





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