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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.
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Before
AfterCreosote Removal in New York, NY
Creosote removal in New York typically costs between $250 and $600 for a standard single-flue fireplace, depending on how heavy the buildup is and whether it’s reached the glazed, tar-like third stage. Most jobs take 60 to 90 minutes and can often be scheduled within a few days. At Ashby Chimney New York, we give you a written price before any work starts, so the number we quote is the number you pay. If you’re already seeing black, shiny flakes in the firebox or smoke backing into the room, call us at (315) 644-2982 and we’ll get you on the schedule.
This page covers what creosote actually is, when it’s moved past “clean it next season” into “handle this now,” how our removal process works, and what you should expect to pay. If you want the fuller picture of our Chimney Cleaning & Sweep in New York services, that page walks through everything from initial inspection to finished sweep.
When You Need Creosote Removal
Creosote is the byproduct of burning wood. It forms as smoke cools and condenses on the inside of your flue, building up in layers over time. A light, dusty coating is normal. A thick, glassy, tar-like coating is not, and it’s a fire hazard that won’t go away on its own. Here’s what tells us it’s time to get it removed:
- You see shiny, black, tar-like buildup inside your flue. This is third-stage creosote, the hardest to remove and the most flammable. If you can chip it with a fireplace tool and it flakes off like hardened syrup, call us; don’t light another fire.
- Smoke backs up into the room instead of drawing up the chimney. In older New York homes, especially brownstones and prewar buildings, narrowing flues from creosote buildup restrict the draft and force smoke back through the fireplace opening.
- You smell a strong, acrid campfire odor even when the fireplace is cold. That smell usually gets stronger on humid days or after rain, and in New York summers it can spread through the whole floor of a house, not just the room with the fireplace.
- It’s been more than a season since the last sweep, and you burned regularly through winter. The National Fire Protection Association recommends an inspection at minimum once a year, and a cleaning whenever buildup reaches 1/8 inch. Most New York homeowners who burn weekly hit that threshold in a single season.
- You bought a house and don’t know the chimney’s history. Many older New York homes come with chimneys that haven’t been opened in years. We regularly find heavy creosote and debris in flues that “looked fine” during the home inspection because nobody ran a camera up them.
- You had a chimney fire and want to make sure it never happens again. Chimney fires often leave cracked flue tiles and warped metal liners behind. We inspect for that damage as part of the removal process, because removing creosote from a broken flue doesn’t solve the underlying problem.
Our Creosote Removal Process
We show our work before we start, and we explain what we’re doing at each step. Here’s what a creosote removal visit from Ashby Chimney New York looks like:
- Inspection and written price. We run a camera up the flue to see exactly how much creosote is there, what stage it’s in, and whether the flue liner has any cracks or damage from previous fires. Then we hand you a written price. That price doesn’t change once we start.
- Protecting the room. We lay drop cloths around the fireplace and, if needed, run a HEPA vacuum to keep fine dust from spreading. We treat your home the way we’d treat our own; half of our job is leaving the place cleaner than we found it.
- Mechanical agitation. We use rotary wire brushes sized to your flue. For lighter first and second-stage creosote, the brushes knock it loose. For heavy third-stage glazed creosote, we may need to use specialized tools or, in severe cases, chemical treatments that break the bond between the creosote and the flue wall.
- Application of a creosote conditioner where needed. In cases where glaze won’t fully release with brushing alone, we apply a professional-grade conditioner from a brand like Olympia Chimney or Copperfield, let it work, and return to finish the job. We don’t experiment with products we don’t trust; we use what the trade uses.
- Full vacuum of the firebox and smoke shelf. Everything that comes down the chimney gets vacuumed out. We clean the smoke chamber, smoke shelf, damper, and firebox. When we’re done, the only sign we were there is a clean flue and a working fireplace.
- Written guarantee and honest recommendations. We give you a written report of what we found and what we did. If your flue liner is damaged, the creosote removal will reveal it. We’ll tell you straight and give you a written quote for any repair, never pressure.
Creosote Removal Pricing in New York
Here’s a straight answer, because that’s what you’re here for. Most creosote removal jobs in New York fall between $250 and $600. Where you land depends on a few things:
| Condition | Typical Price Range | What’s Included |
|---|---|---|
| Light to moderate buildup (Stage 1 – 2) | $250 – $400 | Camera inspection, brushing, full vacuum, written report |
| Heavy glazed creosote (Stage 3) | $400 – $600 | Everything above plus specialized glaze removal, possible chemical treatment, longer job time |
| Multiple flues or fireplace + furnace flue | $500 – $800 | Each flue gets its own inspection, cleaning, and report |
| Chimney fire damage repair (if discovered) | Quoted separately | Flue liner repair or replacement using brands like DuraFlex or Famco |
What affects the price in New York specifically? A few things. First, access: if you’re in a brownstone or a walkup where roof access requires a ladder from a tight alley, that adds time. Second, age of the house: many New York chimneys are unlined or have original clay tiles that are cracked, and creosote removal is more delicate when the flue is fragile. Third, the severity of the glaze: third-stage creosote doesn’t brush off like dust; it has to be scraped, chemically treated, or both, and that takes longer.
Every creosote removal we do includes a written price before we start and a written guarantee when we finish. If something isn’t done right, we come back and fix it at no charge inside the guarantee period. That’s the 365-Day Done Right Promise, and it applies to every job, not just the big ones.
Call (315) 644-2982 and we’ll give you a free estimate over the phone. If the job turns out to be more involved once we see the flue, we’ll show you the camera footage and give you a new written price before any additional work begins. No surprises, no calls after the fact telling you it’s going to cost more.
Why Choose Ashby Chimney New York for Creosote Removal
We’ve been at this since 2002, and we’ve seen every kind of creosote New York fireplaces can produce. Ashby carries ash right in the name, which suits the work; our job is to clean it out and keep it clean. But there are a few things that set us apart from the chimney companies that make you wait around all day and then hand you a bill that doubled at the door.
- Written price before work starts. Always. The number we quote is the number you pay. We don’t “discover” problems after the fact and add charges; we find problems during the inspection, show you the camera, and quote you before anything else happens.
- Written guarantee on every repair. 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’s included with every job, not sold as an add-on.
- Background-checked, uniformed technicians. You’ll know exactly who is walking through your door. Our techs are trained, vetted, and show up in a marked vehicle with a uniform.
- A live person answers the phone, 24/7. No voicemail loops, no “leave a message and we’ll get back to you.” Call at any hour and a real person picks up. If you have a chimney emergency, you talk to a human immediately.
- Materials from established chimney-trade brands. When repairs are needed, we use products from DuraFlex, Olympia Chimney, Famco, and Copperfield, not whatever happened to be in the van. These are the brands chimney professionals have used for decades.
We’re independently owned and operated under the standards of the Kingswell Guarantee. That means we’re not a national chain and we’re not a fly-by-night operation; we’re a local New York company that follows a clear set of values: say the price, show up in the window, leave it cleaner, put the guarantee in writing, and come back if it fails. We call it the Kingswell Way.
FAQs – Creosote Removal
What does creosote removal cost in New York?
Creosote removal in New York typically costs $250 to $600 for a single-flue fireplace, with heavy glazed buildup at the higher end. Multiple flues run $500 to $800. Call (315) 644-2982 for an exact quote; estimates are free, and the price we quote is the price you pay.
Can you remove creosote from a chimney with a fire burning?
No. Creosote removal requires a cold fireplace. We recommend calling us at least a day after your last fire so the firebox and flue are safe to work in. If you need it done on a specific day, tell us when you call and we’ll schedule around your fire usage.
How often should creosote be removed in New York?
Most New York homeowners who burn wood weekly need a sweep every year, and a creosote check is part of that. If you burn softwoods or unseasoned wood, or if your flue is uninsulated and runs through a cold exterior wall (common in many New York row houses), you may need it more often. We’ll tell you what we saw and when we’d want to see you again.
Is creosote removal safe to do myself?
We don’t recommend DIY creosote removal for heavy or glazed buildup. Chimney work requires roof access, specialized brushes, proper vacuum equipment, and an understanding of flue safety; a damaged flue liner that isn’t caught during cleaning can lead to a house fire. For light surface dust, you might brush the firebox, but for anything inside the flue, hire a trained professional. The cost of a sweep is a fraction of what a chimney fire costs.
Do you remove creosote from furnace and boiler flues too?
Yes. We clean creosote and soot from fireplace flues and from furnace, boiler, and wood stove flues. Each flue gets its own camera inspection and quote. Call (315) 644-2982 and tell us what you’ve got; we’ll schedule the right team for the job.
What’s the difference between creosote and soot?
Soot is fine black powder; creosote is the sticky, tar-like or glazed residue that forms when soot and moisture combine. Soot brushes off easily. Creosote, especially third-stage creosote, requires mechanical agitation, chemical treatment, or both. If you’re seeing thick black glaze rather than dusty powder, you need creosote removal, not just a sweep.
Get Your Creosote Removed in New York
If you’ve noticed signs of creosote buildup or it’s simply been too long since your last sweep, call us at (315) 644-2982. We’ll give you a free estimate over the phone, answer your questions straight, and schedule a visit at a time that works for you. You’ll get a written price before any work starts and a written guarantee when it’s done. If you’d like to read more about our full range of services first, visit our Chimney Cleaning & Sweep in New York page or head back to our home page to see everything we do.
Written by Nathan Corliss, Owner at Ashby Chimney New York, serving New York.