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Fireplace Repair

Fireplace Repair near you

Repair wood and electric fireplaces, inserts and stoves. Tell us about your fireplace repair project and we’ll help you find local fireplace technicians who serve your area.

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Fireplace repair covers the wood-burning firebox and everything attached to it inside the house: the firebrick or refractory panels that line the fire chamber, the damper that closes off the flue, the smoke chamber just above it and, on inserts and stoves, the doors, baffles and blower. Trouble shows up as cracked or loose brick, a damper that sticks or won't seal, smoke drifting into the room, rust streaks in the firebox or a stale smoke smell long after the fire is out.

Because the fireplace connects to a chimney, one problem often involves several trades. A hearth technician or mason repairs the firebox and damper, a sweep cleans the flue, a mason fixes the crown and brick outside, and a WETT-certified inspector, or in Quebec a qualified heating professional, confirms the system is safe to use again.

This page explains the common failures, why fireplaces smoke, when to stop using one, how repairs unfold, the choice between repairing, adding an insert or converting to gas, and what your insurer will want to know.

Common wood fireplace problems: cracked firebox, faulty damper and worn insert parts

  • Firebrick that has cracked, spalled or come loose, or eroded mortar joints between bricks, which can let heat reach materials behind the firebox that were never meant to get that hot.
  • Split or crumbling refractory panels in a factory-built fireplace, a unit designed and tested as a system that should only receive the manufacturer's replacement parts.
  • A damper plate rusted in place, a handle that no longer holds it open, or a frame so warped the plate won't close, often after years of rain coming down an uncapped flue.
  • A smoke chamber with rough, cracked or missing parging, which catches creosote and disturbs the flow of smoke into the flue.
  • On inserts and stoves, a cracked baffle, burned-out bricks inside the unit, a door that no longer latches tightly or a convection blower that has turned noisy or gone quiet.
  • Rust, white staining or a musty smell in the firebox, clues that water is getting in through the cap, crown or flashing up on the roof.

Why a fireplace smokes into the room, and what it tells you

A fireplace that spills smoke is telling you the draft isn't strong enough to carry combustion gases up the flue. Sometimes the cause is simple: a damper only partly open, a cold flue on the first fire of the day or wood too wet to burn cleanly. Sometimes it's the house. Kitchen and bathroom fans, a clothes dryer or a newly tightened envelope can pull air down the chimney, and the smoke comes with it; if cracking open a nearby window stops the smoking, pressure is the likely culprit.

Other causes need a professional: a flue narrowed by creosote, a fallen flue tile or a nest; a firebox opening too large for the flue that serves it; a chimney too short for nearby roof lines or trees, so wind pushes smoke back down; or a damaged smoke chamber. A sweep's inspection, often with a camera, usually identifies which one it is before any money goes into repairs.

When to stop using a wood fireplace: chimney fire signs, lingering smoke and CO alarms

A damaged firebox or flue can let smoke and gases into the living space, which is why Health Canada advises smoke alarms and at least one carbon monoxide alarm in any home that burns wood. Let the fireplace go cold and call for an inspection if you notice any of the following:

  • A roaring or rumbling sound from the chimney, sparks or dense smoke from the top, or a chimney wall hot to the touch, all signs of a chimney fire: get everyone out and call 9-1-1.
  • Pieces of flue tile, mortar or brick falling into the firebox, which mean the lining is breaking down.
  • Scorch marks, blistered paint or discolouration on the mantel, surround or wall above the opening.
  • A smoke smell in upstairs rooms or the basement while the fire burns, a sign smoke is escaping through cracks in the chimney.
  • A carbon monoxide alarm going off: leave the house right away, call for help from outside and don't relight the fireplace until a professional has found the cause.

How a fireplace repair job works: sweep, inspect, then repair

  • The flue is swept first, since soot and creosote hide cracks; our chimney cleaning page explains what the sweep does.
  • The technician inspects the firebox, damper, smoke chamber and flue and checks the clearances to the mantel, hearth and nearby framing.
  • A written report and quote separate the firebox and damper work from any chimney or roof repairs that belong to a mason or roofer.
  • Damaged firebrick is replaced or repointed with refractory materials made for direct flame, and factory-built units get the manufacturer's listed parts only.
  • A failed throat damper is repaired or replaced, sometimes with a sealing damper mounted at the top of the chimney instead.
  • New refractory mortar is cured with small fires, as the product directs, before the fireplace returns to normal use.

Repair the fireplace, add a wood insert or convert to gas?

A solid masonry fireplace with a few damaged bricks and a sticky damper is usually worth repairing. The picture changes when the firebox or flue lining needs major work, when a damaged factory-built unit has parts that are no longer made, or when the open fireplace sends more heat up the chimney than it gives to the room. At that point the realistic options are a certified wood insert, a gas insert or log set, or retiring the fireplace altogether.

An insert slides into the existing firebox and vents through a liner sized for it, so the chimney has to be assessed first; our chimney repair page covers liners. Health Canada recommends choosing CSA or US EPA certified wood-burning appliances. Converting to gas means new gas piping and venting, regulated work for a licensed gas technician, such as a TSSA-registered fuels contractor in Ontario; our gas fireplace service and fireplace installation pages cover that route.

WETT inspections and home insurance after fireplace repairs

Repairs that change the firebox, the liner, the hearth or the clearances around the opening can change how your insurer sees the risk. Insurers commonly ask about wood-burning appliances and may request a WETT inspection, which checks the appliance and its venting against building and fire code requirements; in Quebec, the inspection is done by a qualified heating professional.

Call your insurer or broker before adding an insert or undertaking major firebox or liner work, and keep the sweep's report, the repair invoice and any inspection report together. An undisclosed appliance or an unapproved alteration can complicate a claim after a fire, and that paperwork is also what a buyer's home inspector will ask to see.

Wood smoke and health: burning habits that protect your family and your fireplace

A fireplace that isn't drawing properly puts fine smoke into the room, and Health Canada notes that children, older adults and people with heart or lung problems are most at risk from wood smoke. It also advises against burning wood on days when air pollution levels are high. Good habits cut indoor smoke and slow the damage that brings you back to the repair list:

  • Burn smaller, well-dried pieces rather than big logs, and keep the woodpile stacked loosely outdoors so air moves through it.
  • Open the damper fully before lighting and leave it open until the fire is completely out.
  • Use a sturdy screen, and keep rugs, furniture and kindling well back from the hearth.
  • Book the sweep and inspection before the burning season, not after the first smoky fire of the year.

Fireplace Repair: frequently asked questions

Is it safe to use a fireplace with cracked firebrick?

Fine surface cracks are common, but wide cracks, missing mortar or loose bricks can let heat reach combustible framing behind the firebox. Stop using it and have it inspected; a technician can tell you whether repointing or new brick is needed.

Why does my fireplace smoke only when the kitchen fan or dryer is running?

Exhaust appliances pull air out of the house, and a tight house makes up for it by drawing air down the chimney. Turn them off while the fire burns or open a nearby window slightly, and ask a heating professional about a dedicated supply of outdoor air.

Can I fix a fireplace damper myself?

Freeing a stiff handle is simple, but reaching into the smoke chamber means working in soot and creosote around heavy, sharp metal. Replacing a damper, or fitting a sealing one at the top of the chimney, involves roof work and precise fitting that belong to a professional.

Does home insurance cover a house with a wood-burning fireplace?

Usually, but insurers want to know about the appliance and may ask for a WETT inspection before or after major changes. Tell your broker about any insert, stove or significant repair, and keep the inspection and repair reports on file.

Should I convert my wood fireplace to gas?

It can make sense if you want heat at the push of a button without smoke, ash or wood to store, or if the firebox and flue need costly work anyway. The conversion must be done by a licensed gas technician; our gas fireplace pages explain the options.

Sources

  1. Health Canada: Wood smoke and your health
  2. Health Canada: Preventing carbon monoxide exposure
  3. WETT Inc.: Who we are
  4. WETT Inc.: About WETT inspections
  5. Government of Québec: Wood heating safety
  6. TSSA: Authorized heating fuel contractors (Ontario)

Written by the LokalMatch editorial team. Last reviewed September 10, 2026.

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What affects the cost of fireplace repair

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type of system and fuel source
  • Size and efficiency of the equipment
  • Condition of the existing ductwork and venting
  • Electrical or gas line changes
  • Access to the furnace room, attic or outdoor unit location
  • Removal and disposal of the old equipment
  • Emergency or after-hours service

How to compare fireplace technicians before you hire

  • Hire a technician who is licensed for heating, cooling and gas work in your province.
  • For a new system, ask for a load calculation for your home rather than a size based on the old unit.
  • Get written quotes that list the equipment, ductwork changes, removal of the old unit and any electrical work.
  • Ask how they handle service calls and repairs after installation, including in the middle of winter.
  • Compare the full scope of each quote, not only the equipment on it.

Questions to ask fireplace technicians before you hire

  • Are you licensed for this type of heating, cooling or gas work in my province?
  • How did you decide what size of system my home needs?
  • Does this installation need a permit, and will you take care of it?
  • What does the manufacturer's warranty cover, and what does your labour warranty cover?
  • Will you need to change the ductwork, venting or electrical to make this work?
  • Do you offer maintenance plans, and what do they include?
  • How quickly can you respond if the system stops working?

When to call a pro for fireplace repair

  • If you smell gas, leave the home and call your gas utility's emergency line from outside.
  • If a carbon monoxide alarm goes off, get everyone outside and call emergency services.
  • No heat in cold weather, or a furnace that keeps shutting off
  • Unusual noises, burning smells or a big jump in energy use

Fireplace repair permits and local rules

Some fireplace repair work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

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