⚠️ CO Alarm Going Off? LEAVE IMMEDIATELY · Call 911 · Then (416) 424-4328
Carbon Monoxide and HVAC Safety — Critical Guide for Toronto & Scarborough Homeowners
Carbon monoxide (CO) is produced by incomplete combustion of gas, oil, or propane. It is colourless and odourless — the only warning is a CO detector or physical symptoms.
HVAC Sources of Carbon Monoxide in Toronto Homes
- Cracked heat exchanger — #1 CO risk. Combustion gases enter the breathing air stream. Replace furnace immediately if heat exchanger is cracked.
- Blocked exhaust pipe — Ice, bird nests, or debris blocking the flue in extreme cold backs up combustion gases.
- Combustion air shortage — Tightly sealed homes need dedicated combustion air supply for gas appliances.
CO Safety Essentials
- Install a CO detector on every level and near sleeping areas. Replace every 5–7 years.
- Annual furnace tune-up includes combustion analysis and heat exchanger inspection.
- If CO alarm sounds: evacuate immediately, call 911, do not re-enter until cleared.
How can my HVAC system cause carbon monoxide in my Toronto home?
Your HVAC system can produce dangerous CO if: the furnace heat exchanger is cracked, the exhaust pipe is blocked, or there is a combustion air shortage. Annual furnace tune-up with combustion analysis detects these issues. If your CO alarm sounds, evacuate immediately and call 911. Then call Madina Mechanical at (416) 424-4328 for emergency HVAC safety inspection.
🔗 Furnace Repair Scarborough | HVAC Maintenance Toronto
HVAC Safety Inspection: (416) 424-4328
