What are the signs of carbon monoxide from a furnace

Carbon monoxide from a furnace is odorless and colorless, making it extremely dangerous. The most reliable sign is your CO detector alarm, but there are other warning signs that indicate potential carbon monoxide production from your heating system.

Physical symptoms are often the first indication of CO exposure. These include headaches, dizziness, nausea, fatigue, and flu-like symptoms that improve when you leave the house. Multiple family members experiencing these symptoms simultaneously is a major red flag. In severe cases, CO poisoning can cause confusion, chest pain, and loss of consciousness.

Visual signs around your furnace can indicate incomplete combustion that produces carbon monoxide. Look for yellow or orange flames instead of blue flames in gas furnaces, soot buildup around the furnace or vents, rust or corrosion on the heat exchanger or flue pipe, and moisture or condensation around windows near the furnace. A damaged or disconnected flue pipe is particularly dangerous as it can allow CO to enter your home instead of venting outside.

In Ottawa's climate, furnaces work harder during our cold winters, increasing the risk of CO production from cracked heat exchangers or blocked vents. Snow and ice can block outdoor vents, causing dangerous backdrafting. The temperature swings we experience can also cause expansion and contraction that may crack heat exchangers over time.

If your CO detector sounds or you suspect carbon monoxide, leave your home immediately and call 911. Don't try to locate the source or turn off equipment - just get everyone out and call for help. Contact Enbridge Gas at 1-866-763-5427 if you smell gas. Never ignore CO detector alarms or assume they're malfunctioning.

Annual furnace maintenance by a licensed HVAC technician is crucial for preventing CO issues. We inspect heat exchangers, test combustion, and ensure proper venting during tune-ups. For peace of mind about your furnace's safety this winter, Ottawa HVAC Pro offers comprehensive furnace inspections and maintenance services.

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