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 Commack
If you own a home in Commack built between 1955 and 1975, your chimney almost certainly has an original clay tile flue liner that’s now 50 to 70 years old. That matters because those liners crack, spall, and let carbon monoxide into living spaces. Emberly Chimney Cleaners brings camera-scan inspection, written pricing, and a documented photo record to every fireplace service call in Commack. We’ve cleaned and inspected more than 38,000 chimneys since 2009, and the dual-flue setups common in Commack’s post-war housing stock are exactly the kind of job we see most. Call (980) 580-8641 for a written quote before any work starts.
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 Commack’s Preferred Fireplace Services Company
Commack homeowners call us for a specific reason: we show you what’s inside your flue before you spend a dollar on repairs. Our techs run a camera down every fireplace chimney on every visit, and you get the photo record whether we find damage or not. That’s Clause 4 of the Haven Standard, the inspection protocol we’ve run continuously since 2009. Corrine Halstead, who leads Emberly, built the company around this one principle: evidence before recommendations. If we tell you a liner needs work, you’ll see the cracked clay tiles in the photos.
We also answer the phone. Live person, 24 hours a day, 7 days a week. No voicemail tree, no web form only. When you call about a fireplace concern in Commack, you talk to someone who can schedule a tech from our New York City dispatch office to your street. Background-checked, uniformed crews arrive with a named tech assigned and a text sent when they’re on the way.
Commack’s housing stock rewards experience. The dual-flue chimneys on the Capes, ranches, and split-levels along Townline Road and Indian Head Road hide problems that a flashlight glance misses. Our techs know to look for the abandoned oil furnace flue sitting behind the active wood-burning fireplace. They know where Commack’s freeze-thaw winters crack crowns and let water in. That local knowledge is why homeowners keep our number on file.
Our Fireplace Services in Commack

Gas Fireplace Service
Gas fireplaces in Commack get serviced less than they should because they look clean. No ash, no smoke. But gas logs still produce deposits on the burner and glass, and a failing thermopile or a dirty pilot assembly shuts the whole unit down in the middle of January. A typical gas fireplace service in Commack runs $125 to $225, including cleaning the burner, checking gas connections, and testing the pilot and thermocouple. If your glass is cloudy or the flame burns mostly yellow, it’s time.
Wood Burning Fireplace
Wood burning fireplaces in Commack carry the heaviest creosote loading we see anywhere in our service area. Rural properties here use wood stoves as primary heat from November through March, and low-temperature burns build third-degree creosote that a brush can’t remove. On a split-level off Townline Road, our tech pulled the damper plate and found third-degree creosote glazing the active wood flue. We hand-scraped the tar glaze, then walked the owner through burning denser hardwood to keep it from coming back. A standard wood fireplace sweep in Commack runs $175 to $275. Hand-scraping tar glaze adds $75 to $150.
Fireplace Insert
Inserts solve a lot of Commack’s draft problems, but they need specific care. The liner connected to an insert has to be sized to the unit and inspected every year, because a misaligned or perforated liner puts exhaust back into the room. We service inserts from all major manufacturers and use Gelco, Famco, and Olympia Chimney components when replacement parts are needed. Insert service in Commack, including liner inspection, typically runs $200 to $350 depending on whether the insert has to come out for cleaning.
Damper Repair
Dampers fail two ways in Commack: rust from water that leaked through a cracked crown, or warping from heat. Either way, the fireplace won’t hold a fire, the room smells like smoke, and cold air pours down the chimney all winter. Damper repair or replacement in Commack runs $150 to $400 depending on whether we can rebuild the existing frame or need a new damper assembly. A working damper is also what keeps heated air from escaping when the fireplace isn’t used.
Before
AfterTrusted Brands We Service in Commack
We service and install fireplace components from Gelco, Famco, and Olympia Chimney. These are the brands we trust because they hold up through Commack’s freeze-thaw cycles and the high flue temperatures that come with heavy wood burning. Because our dispatch is fast to Commack neighborhoods, we can quote a replacement part in writing and often have it installed within days, not weeks. We don’t stock generic parts that sort of fit. If your damper, liner, or cap needs replacement, you’ll get the exact component for your fireplace model, priced before we order it.
Common Fireplace Services Problems We See in Commack Homes

- Abandoned oil furnace flues left open or sheet-metal capped. The post-WWII housing boom in Commack ran from roughly 1955 to 1975, and most of those homes had dual-flue chimneys. When oil boilers were converted to National Grid natural gas, the old furnace flue was often just capped with sheet metal or left open. That open flue shares a chase with the active fireplace, creating a carbon monoxide backdraft path that we find on a significant share of our Commack inspections.
- Freeze-thaw cracked crowns and water entry. Commack sits in the interior of Long Island, so winters run colder than on the shore, with more pronounced freeze-thaw cycling. Water seeps into cracked crowns, freezes, expands, and opens the crack wider. That water reaches the flue liner and firebox, accelerating deterioration. Post-winter crown inspection is one of the most common Service calls we make in Commack.
- Third-degree creosote from wood stove heat. Rural Commack properties rely on wood stoves as primary heat, and those long, low-temperature burns produce tar glaze that bonds to the flue wall. A rotary brush skips right over it. This requires hand-scraping, and it changes the safe sweeping interval from once a year to twice a year for many Commack wood burners.
- Spalling clay tile liners in aging masonry chimneys. The original clay tile liners in 50 to 70-year-old Commack chimneys crack at the mortar joints. Those cracks let heat and gases reach the surrounding masonry, and in severe cases, the liner itself starts flaking apart. A camera inspection is the only way to confirm spalling before it becomes a chimney fire.
Pricing for Fireplace Services in Commack, NY
Here’s what fireplace work costs in Commack right now. A standard wood fireplace sweep runs $175 to $275. Gas fireplace service runs $125 to $225. Damper repair runs $150 to $400. Fireplace insert service runs $200 to $350. If you need a conversion, such as turning a wood-burning fireplace into a gas insert, plan on $1,200 to $2,800 depending on the liner run and the unit you choose. What changes the price: whether we need to hand-scrape creosote glaze, whether the abandoned furnace flue needs sealing, and whether the liner shows damage on camera. You’ll get a written scope, written price, and written warranty before anyone starts. Clause 1 of the Haven Standard. Call (980) 580-8641 for a free estimate.
We Also Serve Cities Near Commack

Emberly Chimney Cleaners serves Fireplace Services in Commack and the surrounding Suffolk County communities, including East Northport, Smithtown, Hauppauge, and Huntington Station. If you’re right on the edge of Commack, we’re still close by, and we bring the same camera inspection and written pricing to every call.
Serving Commack, NY - Our Local Coverage Area
We’re based in the Commack 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 Commack

Commack’s housing boom from 1955 to 1975 produced thousands of homes with dual-flue chimneys, one flue for the oil-fired boiler and one for the fireplace. When homeowners switched to National Grid natural gas, the old oil flue was often abandoned in place, capped with sheet metal or just left open. That abandoned liner sits in the same chase as the active wood-burning fireplace, and an open or poorly sealed liner creates a path for carbon monoxide to backdraft into the house. We find this on a meaningful share of our Commack inspections. The fix is sealing the abandoned flue, often with a HeatShield system, which we quote before we start. Call (980) 580-8641 to schedule a camera inspection.

Commack sits in the interior of Long Island, where winter lows run colder than shoreline communities like Huntington Bay or Lloyd Neck. Cold air sinks down the chimney every night, and a failing damper lets that air pour into the house. That’s not just uncomfortable. It’s a 24-hour heat leak all winter. Commack’s more pronounced freeze-thaw cycling also cracks chimney crowns faster, and water gets through those cracks, rusts the damper, and shortens its life. If your damper rattles, won’t seat, or the room smells like smoke when the fire’s out, call (980) 580-8641. A written quote before any work starts.

On the rural edges of Commack, wood stoves run as primary heat through the winter, and the burning practices are often low-temperature to stretch the wood. That produces third-degree creosote, a tar glaze that bonds to the flue wall and cannot be removed with a brush. Once that glaze is present, a standard annual sweep isn’t enough. We recommend a six-month interval for heavy wood burners in Commack, with hand-scraping when the glaze builds. One humid morning with a chimney fire is all it takes. Call (980) 580-8641 and we’ll put you on a schedule based on what the camera shows.

Yes. Nor’easters drive water and debris into exposed chimney caps, and the damage is rarely visible from the ground. A storm can crack a crown, dislodge flashing, or knock a cap loose without leaving a single visible sign from the yard. Commack’s freeze-thaw cycles then widen those cracks through the winter. A Level 2 inspection, which is the NFPA 211 standard we use, puts a camera down the flue after the storm. You get photos of what we find, or confirmation that nothing’s wrong. Clause 4 of the Haven Standard. Call (980) 580-8641 to schedule one.

Look at the flame. A healthy gas fireplace burns blue with a steady, even pattern. If you see mostly yellow or orange flame, or soot building up on the glass or logs, the burner needs cleaning or the air-to-gas mix is off. The glass will also develop a milky white film over time that you can’t clean from the outside. That film means the combustion isn’t burning cleanly. Ignoring it wastes gas and can produce carbon monoxide. Gas fireplace service in Commack runs $125 to $225. Call (980) 580-8641 for a written quote.

Fireplace Services in Commack, NY: What Every Homeowner Should Know
Commack’s post-WWII suburban boom, roughly 1955 to 1975, built thousands of Capes, ranches, and split-levels with original masonry chimneys. Those chimneys served dual-flue setups: one flue for an oil-fired boiler, one for a fireplace. When homeowners switched to natural gas served by National Grid, the old oil flues were abandoned in place. Local sweeps working the Townline Road and Indian Head Road corridors regularly open up chimneys and find the furnace flue capped with sheet metal or left entirely open, sitting in the same chase as an active wood-burning fireplace. That’s a code violation and a carbon monoxide risk endemic to this specific generation of Suffolk County housing. It’s rare in newer developments. If your Commack home has a chimney from this era, a camera inspection should happen before you light the first fire of the season.
Corrine Halstead built Emberly Chimney Cleaners around the idea that a chimney company should prove what it finds. Every job gets a camera scan, a written quote, and a photo record. The 365-Day Done Right Promise covers the work: if it’s not done right, we make it right. That’s stamped on every job under the Haven Standard. For 38,000+ chimneys since 2009, that’s been the rule, and it’s the reason Commack homeowners call us back.
If you have a fireplace in Commack, don’t wait until a chimney fire or a CO alarm tells you something’s wrong. Call (980) 580-8641 for a free estimate. We’ll show you what’s inside your flue before we ask you to spend anything.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners, serving Commack and Suffolk County.





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