Calgary Safe at Home: A Fire Safety Series — Part 8

Fireplace, Furnace and Home Heating Safety in Calgary

Calgary homes do not ease gently into heating season.

One week the windows are open. The next week the furnace is running, the fireplace is lit and someone has pulled a space heater out of the basement.

Most home-heating equipment does its job quietly when it is properly installed, maintained and used. The trouble starts when vents become blocked, equipment deteriorates, boxes creep closer to the furnace or a temporary heater quietly becomes part of the permanent floor plan.

Fire is not the only concern. Furnaces, fireplaces and other fuel-burning appliances can produce carbon monoxide when fuel does not burn completely or combustion gases do not vent safely outside.

I have walked through enough Calgary homes to know that heating equipment is easy to ignore when it is working. Before another heating season settles in, take a closer look at what is keeping the home warm—and what could put it at risk.

Use Our Quick Navigation Guide Below To Jump To Any Part On Kitchen and Cooking Fire Safety in Calgary:     

• Have Fuel-Burning Equipment Inspected Every Year
• ATCO Gas Offers a No-Cost Annual Appliance Inspection
• Do Not Ignore Furnace Warning Signs
• Watch: Furnace Maintenance for Calgary Homes
• Keep the Furnace Room Clear
• Check Exterior Vents After Heavy Snow
• Carbon Monoxide Alarms Are Essential
• How to Have a Wood Fire Safely at Home
• Burn Clean, Dry, Seasoned Wood
• Avoid Slow, Smouldering Fires
• Have the Chimney Inspected Annually
• Know the Signs of a Chimney Fire
• Dispose of Ashes Outside
• Gas Fireplaces Need Annual Attention Too
• Use Portable Space Heaters Carefully
• Inspect Electric Blankets and Heated Bedding
• Never Use an Oven, Barbecue or Generator to Heat the Home
• Keep Open Flames Away From Medical Oxygen
• What Homebuyers Should Notice
• What Sellers Should Address Before Listing
• Your Home Heating-Safety Audit
• Keep the Heat Working for the Home

Have Fuel-Burning Equipment Inspected Every Year

The Calgary Fire Department recommends having fuel-burning appliances, chimneys and vents professionally cleaned and inspected every year before regular seasonal use.

This includes equipment such as:

• Natural-gas furnaces
• Gas fireplaces
• Wood-burning fireplaces and stoves
• Fuel-burning boilers
• Water heaters
• Other permanently installed fuel-burning heating appliances

Follow the manufacturer’s maintenance schedule and use a qualified professional familiar with the specific equipment.

An appliance turning on is not proof that it is operating safely. A furnace can still produce heat while developing venting, combustion or mechanical problems. “It was warm when we got here” is not much of an inspection report.

ATCO Gas Offers a No-Cost Annual Appliance Inspection

Alberta homeowners can request a furnace and natural-gas appliance inspection from ATCO Gas at no direct cost.

The inspection can include natural-gas appliances such as the furnace, gas fireplace and water heater. It is a practical opportunity to identify visible safety or operating concerns before the equipment is carrying the full weight of a Calgary winter.

ATCO recommends booking during spring or summer for a faster turnaround time. Appointments can still be requested during fall and winter, but those are busier seasons and it may take longer to get an available appointment.

This is where the distinction matters: it is an appliance safety inspection, not a furnace tune-up, cleaning program or repair service. If ATCO identifies a concern, the homeowner may still need a qualified heating or gas contractor to diagnose it, complete maintenance or make repairs.

It also does not replace a WETT inspection for a wood-burning fireplace, stove, insert or other solid-fuel-burning system. Gas appliances and wood-burning systems require different inspections.

Booking the ATCO inspection before heating season gives you more time to deal with anything it uncovers. Finding a furnace problem in June is inconvenient. Finding it during a January cold snap tends to become everyone’s immediate hobby.

Request an ATCO Furnace and Appliance Inspection

Do Not Ignore Furnace Warning Signs 

A furnace often gives smaller warnings before it stops working entirely. The problem is that homeowners get remarkably good at becoming accustomed to the new rattle, occasional smell or breaker that only trips “once in a while.”

Arrange professional service if you notice:

• Unusual banging, rattling, squealing or grinding sounds
• A burner flame that appears unusual or changes unexpectedly
• Soot, scorch marks or discolouration around the equipment or vents
• A persistent burning, smoky or fuel-like smell
• Repeated cycling or difficulty maintaining the temperature
• Rust, corrosion, moisture or water around the furnace
• The pilot light repeatedly going out
• A carbon monoxide alarm activating
• Occupants developing unexplained headaches, dizziness, nausea or confusion

If you smell gas, hear gas escaping or suspect a serious combustion problem, leave the home immediately. Once outside, contact 9-1-1 or the appropriate emergency service. Do not operate switches, use flames or remain inside trying to identify the source.

If a carbon monoxide alarm sounds or anyone experiences possible CO symptoms, get everyone outside and call 9-1-1. Do not re-enter until emergency personnel say it is safe.

Watch: Furnace Maintenance for Calgary Homes

The right maintenance depends partly on the type of furnace in the home. These REPYYC videos explain what Calgary homeowners should know about mid-efficiency and high-efficiency systems.

Mid-Efficiency Furnaces

High-Efficiency Furnaces

Carbon Monoxide Symptoms and Safety Tips

Keep the Furnace Room Clear

A mechanical room is not a bonus storage locker, even when the rest of the basement is full.

Keep combustible materials away from the furnace, water heater, boiler, flue pipes and other heating equipment. Follow the clearances specified by the manufacturer and required for the installation.

Do not store the following beside heating equipment:

• Cardboard boxes
• Paper products
• Clothing and bedding
• Paint, solvents or cleaning chemicals
• Gasoline or propane cylinders
• Wood and renovation materials
• Children’s toys or sports equipment

Keep access to shutoffs, filters, drains and service panels clear. A technician should not have to relocate the Christmas decorations and three hockey bags before reaching the furnace during an emergency.

Replace or clean furnace filters according to the equipment manufacturer’s instructions. A neglected filter can restrict airflow and reduce performance, but a filter change is not a substitute for professional inspection and maintenance.

Check Exterior Vents After Heavy Snow

Calgary snow can block furnace, water-heater and fireplace vents, fresh-air intakes and other exterior exhaust openings.

A blocked exhaust can prevent combustion gases from leaving safely. A blocked intake can interfere with the air the equipment needs to operate correctly. This is one of those small exterior checks that can have much larger consequences inside the home.

Check exterior vents:

• After heavy snowfall
• After drifting snow or strong winds
• During extended cold weather when frost can accumulate
• After landscaping or exterior renovations
• When leaves, nests or debris may be present
• Before using a home that has been vacant

Remove snow and debris carefully without damaging the vent. Do not chip aggressively at equipment or pour hot water over it and create a new block of ice.

If a vent repeatedly freezes or blocks, have the system assessed. Repeatedly clearing it without determining why it is happening is maintenance by déjà vu.

Calgary Carbon Monoxide Safety

Carbon Monoxide Alarms Are Essential 

Carbon monoxide is colourless, odourless and tasteless. You cannot rely on your senses to detect it.

Fuel-burning furnaces, fireplaces, water heaters and other appliances can become sources of CO when they are damaged, poorly maintained, incorrectly installed or unable to vent properly. A clean-looking mechanical room does not rule any of that out.

Install and maintain carbon monoxide alarms according to current requirements and the manufacturer’s instructions. Test them regularly, check their replacement dates and make sure alarms can be heard from sleeping areas.

Do not remove the battery because an alarm is inconvenient. An alarm sounding is not the appliance asking for feedback.

Read Our Smoke and CO Alarm Guide

How to Have a Wood Fire Safely at Home

A safe wood fire begins before the match is struck. The way the system was installed, what you burn and how you operate the fire all matter.

The fireplace, stove, insert, chimney and connector pipes must be correctly installed, connected and maintained. Do not alter the appliance, change venting components or replace parts with improvised materials.

Renovations around a fireplace also matter. A new mantel, television, cabinet, wall finish or flooring material can reduce required clearances or interfere with hearth protection.

When operating a wood-burning fireplace or stove:

• Open the damper before lighting the fire
• Make sure the home has an adequate fresh-air supply
• Keep the damper and air supply available until the fire is completely out
• Use a properly fitted fireplace screen or keep appliance doors closed as directed
• Keep furniture, decorations, firewood and other combustibles a safe distance away
• Supervise children and pets around the hearth
• Never leave the fire unattended
• Make sure the fire is fully out before going to sleep or leaving the home

Burn Clean, Dry, Seasoned Wood

The City of Calgary recommends burning dry, seasoned wood with a moisture content below 20 per cent, with closer to 16 per cent preferred.

Wet or green wood produces more smoke, less useful heat and more creosote buildup inside the chimney. You end up working harder to create a worse fire—which is rarely a winning home-maintenance strategy.

Do not burn:

• Garbage
• Plastic
• Painted or treated wood
• Plywood, particleboard or wood containing glue or resin
• Furniture
• Glossy paper, wrapping paper or large amounts of cardboard
• Any manufactured fire product not approved for the appliance

Use the appliance only with fuels permitted by its manufacturer.

A fireplace is not a dramatic indoor garbage disposal. Materials that burn unpredictably can create toxic smoke, excessive heat, sparks and deposits in the chimney.

Avoid Slow, Smouldering Fires

A small flame and a lot of smoke may look controlled, but a slow, smouldering fire is not the safer way to burn wood. It is simply a dirtier fire doing more of its work inside the chimney.

Incomplete combustion creates more smoke. As that smoke cools inside the chimney, combustible creosote can accumulate on the flue walls.

Build manageable fires using dry kindling and seasoned wood. Allow sufficient airflow and aim for a clean, active burn rather than restricting the air until the fire smoulders for hours.

Follow the appliance manufacturer’s instructions for loading, airflow and operation. Do not overload the firebox or operate the appliance in a way it was not designed to be used.

Have the Chimney Inspected Annually 

Have the chimney, flue and flue pipes professionally inspected every year and cleaned as often as necessary.

The cleaning schedule depends on the appliance, the wood, how the fire is operated and how often it is used.

A routine annual chimney inspection and cleaning are not automatically the same service as a formal WETT inspection. We separated those two for a reason: homeowners should know exactly what they are booking and what documentation they will receive.

A formal WETT inspection is commonly obtained during a home purchase or sale, after an installation or alteration, following a chimney fire or damage, when a significant concern develops or when an insurer requests documentation.

WETT Inspections for Calgary Homes Calgary Fireplace and Wood-Stove Safety

Know the Signs of a Chimney Fire

Warning signs can include:

• A loud roaring or rumbling sound
• Unusual popping or cracking noises
• Dense smoke
• Flames or sparks coming from the chimney
• An intense hot smell
• Walls or surfaces near the chimney becoming unusually hot

If you suspect a chimney fire, get everyone outside and call 9-1-1.

Do not use the fireplace again until the complete system has been professionally inspected. A chimney fire can damage liners, masonry and concealed components even when the outside of the chimney looks unchanged.

Dispose of Ashes Outside

Fireplace ashes can retain enough heat to start a fire long after they appear cold.

Allow ashes to cool. Place them in a metal container with a tight-fitting metal lid and move the container outside, away from the house, garage, deck, fence and anything combustible.

Do not place warm ashes in a cardboard box, paper bag, plastic container, garbage cart, compost cart or recycling bin.

Do not leave the ash container sitting on a wood deck or against the side of the house. “Outside” is not the entire safety plan.

Gas Fireplaces Need Annual Attention Too

The City of Calgary recommends having gas fireplaces inspected annually by a certified professional or as often as the manufacturer recommends.

Regular service can identify ignition, venting, seal, burner and combustion concerns before they become larger problems.

For safer use:

• Keep combustible materials away from the fireplace
• Follow the manufacturer’s instructions if the pilot light goes out
• Do not use a fireplace with cracked or damaged glass
• Keep the protective barrier installed
• Keep children and pets at least one metre from hot glass
• Remember that the glass can remain dangerously hot after the fireplace is turned off
• Stop using the unit if you notice soot, unusual odours, ignition problems or damaged components

A gas fireplace looking clean does not mean it is maintenance-free. It simply does a better job of looking decorative while everyone forgets it is still a fuel-burning appliance.

Use Portable Space Heaters Carefully 

Portable electric heaters can warm a cold room, but they need space and a suitable electrical connection. They are useful appliances—not permission to improvise an electrical system behind the couch.

When using one:

• Plug it directly into a suitable wall outlet
• Do not use an extension cord or ordinary power bar
• Keep at least one metre of clearance from anything that can burn
• Place it on a stable, level surface
• Keep it away from water and damp areas unless specifically designed for that location
• Do not run the cord under rugs or furniture
• Keep children and pets away
• Turn it off before leaving the room or going to sleep

Stop using the heater if the cord, plug or wall outlet becomes hot, loose, discoloured or damaged.

Do not use fuel-burning portable heaters inside unless the appliance is specifically approved for indoor use and installed and operated exactly as required. Portable barbecues, camp stoves and outdoor heaters do not become indoor heating equipment because the furnace quit.

Electrical and Extension Cord Safety in Calgary Homes

Inspect Electric Blankets and Heated Bedding

Check electric blankets, heating pads and heated mattress products before seasonal use.

Stop using them if you find:

• Frayed or damaged cords
• Loose controls or connections
• Scorch marks or discolouration
• Exposed wires
• Hot spots or inconsistent heating

Do not fold, bunch or place heavy objects over heated bedding while it is operating. Follow the manufacturer’s instructions and do not use a product that has been recalled or damaged.

Never Use an Oven, Barbecue or Generator to Heat the Home

Do not use a gas oven or stovetop as a substitute for the furnace.

Never operate a charcoal or gas barbecue, camp stove, generator or other outdoor fuel-burning equipment inside the home, garage or another enclosed area.

Generators must remain outside in a well-ventilated location, away from doors, windows, vents and other building openings. An open garage door does not make the garage outdoors.

If the heating system fails during extreme cold, use safe approved alternatives and arrange qualified service. Do not improvise with equipment that produces flame or combustion gases.

Keep Open Flames Away From Medical Oxygen

Oxygen does not burn by itself, but it allows other materials to ignite more easily and burn more intensely.

Where medical oxygen is used or stored, do not smoke or use fireplaces, candles, gas stoves or other open flames. Keep oxygen equipment away from heat sources, sparks, oils and grease.

Follow the oxygen supplier’s safety instructions and make sure everyone in the home understands the restrictions.

Calgary Portable Oxygen Safety

What Homebuyers Should Notice 

Heating equipment is expensive enough—and important enough—that buyers should look beyond whether the thermostat makes the furnace turn on.

During a showing and home inspection, pay attention to:

• The furnace’s age, visible condition and available service history
• Rust, corrosion, soot, staining or water around heating equipment
• Unusual noises or smells
• Combustible storage crowding the mechanical room
• Damaged or improvised venting
• Exterior vents blocked by snow, ice, vegetation or additions
• Gas-fireplace glass, barriers, ignition and maintenance history
• The condition and history of wood-burning appliances and chimneys
• Working smoke and carbon monoxide alarms
• Portable heaters being used as permanent heating
• Heating installations or renovations without clear permit records

A general home inspection can identify visible concerns and recommend further evaluation. Older equipment, wood-burning systems and suspicious installations may require specialized inspections. This is where good due diligence earns its keep: before conditions are waived, not during the first cold night after possession.

Ask for service records, permits, manuals and any WETT documentation connected to the property.

Calgary Home Inspection Checklist

What Sellers Should Address Before Listing

A heating concern discovered during the buyer’s inspection can create uncertainty quickly—especially when the property is being sold during a Calgary winter. Buyers hear “furnace issue” and immediately start pricing a complete replacement, whether the eventual solution is that large or not.

Before listing:

• Complete overdue furnace and fireplace servicing
• Replace or clean the furnace filter as recommended
• Remove combustible storage from the mechanical room
• Clear exterior vents and keep them clear during the listing
• Test smoke and carbon monoxide alarms
• Address unusual noises, smells, soot, rust and visible damage
• Gather maintenance records, permits, manuals and WETT reports
• Have unused or questionable fireplaces professionally assessed
• Remove damaged space heaters and heated bedding

Do not assume that turning off the fireplace and placing a decorative plant in front of it solves the issue.

Clear information and recent maintenance records give buyers more confidence than a strategic fern.

Calgary Heating and Fireplace Permits

Keep the Heat Working for the Home

Home heating should be reliable, uneventful and mostly boring. Nobody wants the furnace to become the most interesting thing happening in the house.

Annual inspections, clear vents, working carbon monoxide alarms and a few disciplined habits can prevent a furnace, fireplace or space heater from becoming the source of an emergency.

Before the next cold snap:

• Book overdue professional maintenance
• Clear the furnace room
• Check every exterior vent
• Test smoke and carbon monoxide alarms
• Inspect portable heaters and heated bedding
• Review how the wood fireplace is being operated

A warm home is the goal.

The house itself should not be part of the fuel supply.

Watch: Winterizing Your Calgary Home

Heating safety works best as part of a complete seasonal routine. This REPYYC video walks through practical winterizing steps that can help protect the home before temperatures drop.

Prepare Your Calgary Home for Winter Read Our Calgary Home Fire Safety Guide

This article is Part 8 of Calgary Safe at Home: A Fire Safety Series, a practical series focused on preventing fires, protecting the people in your home and preparing for an emergency.

A Safer Home Is Part of Smart Homeownership

A home is more than its finishes, floor plan and sale price. Furnaces, fireplaces, vents and safety systems all affect how the property performs—and how safely the people inside it can live.

I help Calgary buyers and sellers look beyond the surface, ask better questions and understand the maintenance and inspection issues that can matter before, during and long after a move. Whether you are preparing to sell or trying to understand the home you are buying, the right information is worth considerably more than a last-minute surprise.

Dusko Sremac – Calgary & Area REALTOR® | Team Lead, REPYYC

Cell: 403-988-0033   |   Email: dusko@repyyc.com

Talk With Dusko More Calgary Homeowner Guides