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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AfterFast, Reliable Fireplace Services Across Midwood
Fireplace service in Midwood typically runs $180-$450 depending on whether you need a routine tune-up, insert installation, or firebox repair, and most appointments are completed in a single visit with our Fireplace Services in Midwood crew. We’re familiar with the brick Colonials and Tudors on East 16th, East 17th, and Avenue J - homes built in the 1920s to 1940s with full masonry chimneys originally sized for coal. Our dispatch office coordinates scheduling from our New York City location, and our technicians carry the parts and materials to finish the job without a return trip. Call (516) 613-3035 - a live person answers, 24 hours a day.
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 Hearthstone Chimney Co. Is Midwood’s Preferred Fireplace Services Company
We’ve been serving Brooklyn homeowners for over 42 years, and Midwood’s detached brick housing stock is some of the most distinctive we work on. Our customers on East 17th Street and Ocean Parkway tend to be longtime owners - people who bought in the 1980s or 1990s and have raised families in these homes. They remember the contractor who disappeared mid-job or the sweep who charged extra once he was on the roof. We don’t work that way.
Our Fireplace Services team arrives in uniform, with background-checked technicians and a camera rig that lets you see inside your own chimney. The 90-Day Done Right Promise covers every job in writing - if it’s not right, we come back, no paperwork, no arguing. Most calls to (516) 613-3035 reach a live person immediately, not a callback queue.
What separates us in Midwood specifically is that we understand the coal-to-gas conversion history of these chimneys. Many local sweeps treat a fireplace service like a vacuuming job. On these older flues, that’s dangerous.
Our Fireplace Services in Midwood
Gas Fireplace Service
Midwood’s gas fireplaces - whether original conversions or later inserts - often vent into chimney systems never engineered for them. The typical 1930s brick Colonial on your block has a 12×12 clay flue designed for a coal furnace burning at 1,200 degrees. A modern gas boiler or fireplace produces cooler, wetter exhaust that doesn’t draft properly in that oversized space. Condensation forms, mortar erodes, and carbon monoxide can spill into the home. Our gas fireplace service includes combustion analysis, burner inspection, and a Level-2 camera evaluation of the flue to confirm it’s properly sized and lined to current NYC DOB standards. We service HeatShield and DuraFlex systems already in place, and we install new ones when the camera shows it’s necessary.
Wood Burning Fireplace
Wood burning in Midwood presents a specific problem: most homeowners use their fireplaces only during holiday weeks or the coldest snaps in January and February. Short, occasional fires never fully heat the flue. The result is glazed creosote - hard, tar-like, and far more stubborn than the powdery kind from regular use. We’ve cleaned chimneys on Avenue J where the homeowner burned three cords a winter for twenty years with no issue, and others on East 16th where two weeks of holiday fires produced a genuine fire hazard. Our wood burning fireplace service removes glazed buildup with mechanical brushing and, when appropriate, chemical treatment. We always camera afterward so you see the flue is actually clean, not just swept.
Fireplace Insert
A properly sized fireplace insert is often the right solution for Midwood’s oversized masonry chimneys - especially when the original flue is too large for safe gas venting but the structure itself is sound. Inserts from Olympia Chimney and Famco reduce the effective flue diameter to match the appliance, improving draft and eliminating the CO risk of an open 12×12 stack. We measure the firebox, calculate the correct insert size for your BTU load, and show you the camera footage of the existing flue before recommending anything. Installation typically takes one day, and we handle the venting connection and final inspection. For many Midwood homeowners, an insert converts an unsafe, inefficient chimney into a reliable heat source.
Damper Repair
The damper in a Midwood fireplace has usually been opened and closed thousands of times over 80-100 years. Rust, warping, and mortar debris from deteriorating throat walls prevent proper sealing, which means heat loss when the fireplace isn’t in use and smoke backup when it is. We repair or replace throat dampers and install top-sealing dampers when the throat structure is too far gone. A camera inspection tells us which approach makes sense - we don’t guess, and we don’t recommend a full rebuild when a new damper plate will do.
Firebox Repair
The firebox - the actual chamber where combustion happens - takes direct heat and collects the acidic byproducts of every fire. In Midwood’s older homes, we’ve found fireboxes with cracked refractory panels, missing mortar, and heat-damaged brick that channels flames toward the framing. Our firebox repair uses HeatShield refractory mortar and replacement panels from Copperfield, rated for the temperatures your appliance actually produces. We rebuild to NFPA 211 standards, not “good enough,” and we photograph the completed work for your records.
Fireplace Conversion
Converting a wood-burning fireplace to gas in Midwood requires more than running a line and installing a log set. The chimney must be evaluated for proper liner sizing per NYC DOB rules - a step many conversion specialists skip. We’ve been called to homes on Ocean Parkway where a previous installer connected a gas insert to an unlined clay flue, creating a code violation and a safety issue our camera caught in the first five minutes. Our conversions include proper venting design, liner installation if needed, and a written compliance assessment.
Trusted Brands We Service in Midwood
We stock and install professional-grade materials from the manufacturers that other sweeps have to order: DuraFlex stainless liners, HeatShield refractory systems, Famco chimney caps and dampers, and Copperfield firebox panels. Our trucks carry the common sizes for Midwood’s brick chimneys, which means most repairs don’t wait on parts. When we find spalling brick or a failed crown on your East 16th Street home, we can address it then - not schedule a second trip two weeks out.
Common Fireplace Services Problems We See in Midwood Homes
- Oversized, unlined clay flues venting gas appliances. On blocks throughout Midwood, we open clean-out doors and find modern gas boilers or fireplaces tied directly into 12×12 clay flues designed for coal. NYC DOB liner-sizing rules prohibit this configuration. The system appears to work until deteriorating mortar joints or a blocked flue causes CO spillage.
- Glazed creosote from short, occasional fires. Midwood homeowners who burn wood only during holidays or cold snaps produce low-temperature smoke that condenses into hard, glazed creosote. Standard brushing won’t remove it. We use mechanical heads and, when necessary, chemical treatment followed by camera verification.
- Salt-laden moisture accelerating mortar decay. Brooklyn’s position between the Atlantic and Jamaica Bay exposes Midwood chimneys to coastal air that penetrates aging mortar. Freeze-thaw cycling opens joints further, leading to spalling brick and water intrusion that damages the firebox and smoke chamber.
- Upsold relining without camera evidence. We’ve met homeowners who were told they needed a $4,000 stainless liner based on a flashlight glance down the flue. Our policy: no relining recommendation without footage you can see, and a plain-English explanation of what the image shows and why it matters.
Pricing for Fireplace Services in Midwood, NY
Here’s what fireplace services actually cost in Midwood’s market:
- Seasonal gas fireplace tune-up and safety check: $89
- Wood burning fireplace sweep with Level-2 camera inspection: $280-$340
- Firebox repair (refractory panel replacement, mortar patching): $450-$890
- Damper repair or replacement: $340-$580
- Fireplace insert installation (including liner connection): $2,400-$4,200
- Full flue relining with stainless system (Olympia Chimney or DuraFlex): $2,800-$5,400 depending on height and access
Factors that move the number: chimney height, roof access difficulty, whether the existing liner can be removed or must be abandoned in place, and the condition of the crown and flashing. We provide upfront pricing before any work begins - the estimate you sign is the invoice you pay. Every repair over $250 qualifies for $50 off, and we offer a permanent 5% discount for seniors and veterans. Call (516) 613-3035 for a free, no-pressure estimate.
We Also Serve Cities Near Midwood
Our crews work throughout Brooklyn and across the water in Staten Island, including Tottenville, Great Kills, and St. George. Scheduling is coordinated from our New York City office, with local technicians dispatched to each area. If you know a homeowner in one of these neighborhoods dealing with an older chimney, we’re happy to take their call too.
Serving Midwood, NY - Our Local Coverage Area
We’re based in the Midwood 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 Midwood
Your chimney may draw adequately on mild days, but “works” doesn’t mean safe. Midwood’s 1920s-1940s homes were built with clay flues sized for coal furnaces, and most were never properly relined when heating converted to oil and then gas. A modern gas boiler or fireplace venting into an oversized 12×12 flue produces cooler exhaust that condenses on the walls, eroding mortar and risking carbon monoxide spillage. NYC DOB liner-sizing rules explicitly prohibit this setup for gas appliances. We run a camera to show you the actual condition - eroded joints, spalling, or bare brick - before recommending relining. Call (516) 613-3035 and we’ll camera it for free with any service call.
Yes - every Level-2 inspection ends with photos you can see and a plain-English verdict. On East 17th Street we opened the clean-out door on a 1930s Colonial and found a modern gas boiler tied straight into a bare, unlined 12×12 clay flue - no insert, no stainless liner, exactly the setup DOB prohibits for gas venting. We ran a camera down the stack, showed the homeowner the footage of eroded mortar joints and spalling brick on the shared face, and relined the flue with an Olympia Chimney stainless system sized to the boiler before winter freeze-thaw could open the joints further. Nothing is sold on fear. You see what we see, and you decide.
Short, occasional fires are actually worse for creosote buildup than regular use. When you burn for an hour or two on a cold evening and let the fire die, the flue never reaches sustained operating temperature. The smoke condenses as a liquid that bakes into glazed creosote - hard, shiny, and nearly impossible to remove with standard brushing. We’ve cleaned Midwood chimneys where two weeks of holiday fires produced more glazed buildup than a season of steady use. Our mechanical cleaning system handles it, and we verify with the camera afterward. Call (516) 613-3035 to schedule before burning season.
The flue is too large for the appliance, so exhaust moves slowly and cools before reaching the top. Moisture condenses on the clay walls. Over years, this weakens mortar joints and saturates the surrounding brick. In winter, freeze-thaw opens cracks further. Carbon monoxide, which should exit rapidly, can pool and spill into the home through any opening. NYC DOB guidelines require gas appliances to vent through properly sized liners - an unlined 12×12 coal flue does not qualify. We document the violation with camera footage and install a correctly sized stainless liner, typically DuraFlex or Olympia Chimney, to make the system safe and legal.
Midwood sits between the Atlantic coast and Jamaica Bay, so coastal moisture penetrates chimney masonry year-round. Salt accelerates the chemical breakdown of mortar. When temperatures drop below freezing, water in the joints expands and cracks the mortar further. We’ve found chimneys on Ocean Parkway with mortar so eroded that the flue liner was the only thing holding the stack together. The damage is often hidden inside until a camera inspection reveals it. We address crown, flashing, and cap issues as part of any comprehensive evaluation - not as an afterthought, but as the weatherproofing that protects everything below.
Ready to see inside your chimney? Call (516) 613-3035 for a free estimate. A live person will answer, 24 hours a day, and we’ll schedule a time that works for you. Most jobs are completed in a single visit, with upfront pricing and the 90-Day Done Right Promise in writing.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Midwood and Brooklyn communities for over 42 years.