Carbon Monoxide and Your Furnace: What Every Stony Plain Homeowner Needs to Know

Carbon Monoxide and Your Furnace: A Critical Safety Guide

Carbon monoxide (CO) is called the "silent killer" for a reason. It is colourless, odourless, and tasteless — you cannot detect it without a CO detector. And one of the most common sources of carbon monoxide in Canadian homes is the furnace.

Every year in Alberta, there are CO-related hospitalizations and deaths linked to poorly maintained heating systems. This is not something to take lightly, especially in Stony Plain, Spruce Grove, and Parkland County where we rely on our furnaces for 6-7 months of the year.

How Furnaces Produce Carbon Monoxide

All gas and propane furnaces produce carbon monoxide as a byproduct of combustion. In a properly functioning furnace, the CO is safely vented outside through the exhaust flue. The problem starts when components get dirty, damaged, or misaligned:

Dirty burners: When burners are coated with dust and debris, they cannot burn fuel efficiently. Incomplete combustion produces significantly more CO than clean burners.
Cracked heat exchanger: The heat exchanger separates the combustion gases (including CO) from the air that circulates through your home. If it develops cracks — which can happen over time, especially in neglected systems — CO can leak into your living space.
Blocked exhaust flue: If the exhaust path is partially blocked, CO cannot vent properly and may back up into the home.
Dirty flame sensor: A dirty flame sensor can cause the furnace to cycle improperly, leading to incomplete combustion and increased CO production.

How Furnace Cleaning Helps Prevent CO Issues

Regular professional furnace cleaning is one of the most effective ways to reduce CO risk. During our cleaning, we:

Clean all burner components, ensuring efficient combustion
Clean the flame sensor, ensuring proper furnace operation
Clean the blower and motor, ensuring proper air circulation
Visually inspect accessible portions of the heat exchanger for visible damage
Check that the system is operating properly before we leave

While our cleaning is not a substitute for a full mechanical inspection by an HVAC technician, it addresses many of the maintenance factors that contribute to CO production.

Warning Signs of Carbon Monoxide in Your Home

Know these warning signs — they could save your life:

Headaches, especially when the furnace is running
Dizziness, nausea, or confusion
Flu-like symptoms that improve when you leave the house
Yellow or flickering pilot light (should be blue)
Soot or discolouration around the furnace
Excessive condensation on windows near the furnace
A strange, burning smell when the furnace runs

If multiple family members are experiencing headaches or flu-like symptoms at the same time — especially if symptoms improve when away from home — take it seriously. Open windows, leave the house, and call 911 or your gas company.

Essential CO Safety Equipment

Every home in Stony Plain, Spruce Grove, and Parkland County should have:

CO detectors on every level of the home — Install them near bedrooms and near the furnace. Test batteries monthly and replace detectors every 5-7 years.
A working smoke detector in every bedroom — CO detectors and smoke detectors serve different functions. You need both.
An emergency plan — Everyone in the household should know what to do if the CO detector goes off: get out, stay out, and call 911.

How Often Should You Have Your Furnace Inspected?

We recommend two types of regular maintenance:

Annual furnace cleaning: This is what Home Pros Group provides. We clean all accessible components and perform a visual inspection. Cost: $345 flat rate.
Annual mechanical inspection: An HVAC technician should inspect your furnace mechanically, including a thorough heat exchanger check, gas pressure test, and combustion analysis. This is a separate service from cleaning.

Think of cleaning and inspection as two complementary services. Cleaning keeps the system running efficiently and reduces CO production. Mechanical inspection catches structural issues like heat exchanger cracks that cleaning alone cannot address.

Your Family's Safety Is Worth It

Furnace maintenance is not optional — it is essential for your family's safety. The cost of annual cleaning ($345 with Home Pros Group) is nothing compared to the potential consequences of a CO leak.

Call us at (825) 435-9977 to schedule your furnace cleaning. We serve Stony Plain, Spruce Grove, Parkland County, and the Greater Edmonton area.

Alberta-Specific CO Risks

Alberta homeowners face unique carbon monoxide risks that people in milder climates do not think about:

Extended furnace operation: Our furnaces run 6-7 months per year, much longer than homes in southern Canada. More operating hours means more opportunity for CO-producing issues to develop.
Multiple combustion appliances: Many Alberta homes have a gas furnace, gas water heater, and possibly a gas fireplace. Each is a potential CO source.
Sealed homes: Modern Alberta homes are built tight for energy efficiency. While this saves on heating, it also means there is less natural ventilation to dilute any CO that enters the living space.
Extreme cold reducing ventilation: During -30 degree cold snaps, homeowners naturally keep windows sealed tight and may not run bathroom fans or range hoods as often. This reduces air exchange and can allow CO to accumulate.

What to Do If Your CO Detector Goes Off

Do not ignore it. A beeping CO detector is a potential life-threatening emergency.
Open windows immediately if you can do so safely.
Get everyone (including pets) out of the house.
Call 911 from outside the home.
Do not go back inside until emergency responders say it is safe.
Call your gas company (ATCO Gas in most of Parkland County: 1-800-511-3447).

Even if the alarm stops, do not assume the danger has passed. CO levels can fluctuate, and intermittent exposure is still dangerous.

Protect Your Family

Carbon monoxide prevention starts with regular furnace maintenance. A clean, well-maintained furnace produces less CO and vents it properly. Home Pros Group provides thorough furnace cleaning that addresses the key maintenance factors contributing to CO production.

Schedule your annual furnace cleaning today. Call (825) 435-9977. Serving Stony Plain, Spruce Grove, Parkland County, and Greater Edmonton.