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Why are non-vented stoves and fireplaces not certified in Canada?

April 26, 2017certified fireplaces non-vented stoves

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Why are non-vented stoves and fireplaces not certified in Canada?

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Non-vented gas appliances are equipped with Oxygen Depletion Sensors (ODS). These devices have proven to be very reliable and will automatically shutdown the appliance if the Carbon Monoxide (CO) levels reach a dangerous level. However, when gas burns it releases a significant amount of water vapor (gas can be 25% moisture). In a climate such as ours, this moisture inside the house can be detrimental over time. In addition, many non-vented gas stoves release identifiable odors that are undesirable to some homeowners.