What are the carbon monoxide concerns an inspector checks for?

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Carbon monoxide is a colorless, odorless, deadly gas produced by fuel-burning appliances. In a Bloomington home, inspectors check for conditions that could allow it indoors, such as cracked furnace heat exchangers, improper venting of the furnace or water heater, blocked flues, and back-drafting. They also note whether working CO detectors are present, which Minnesota requires near sleeping areas. Because our homes are sealed tight against winter cold, proper combustion venting is especially important here. The main sources are gas furnaces, water heaters, fireplaces, and any fuel-burning appliance. When these vent improperly or develop cracks, combustion gases including carbon monoxide can spill into living space instead of going outdoors. Inspectors look for signs of trouble like soot, rust, corrosion at vent connections, improper vent slope, and back-drafting where exhaust pulls back into the home. Any of these warrant evaluation by an HVAC professional before relying on the appliance. Detectors are the last line of defense. Minnesota law requires carbon monoxide alarms near sleeping areas, and inspectors note their presence and placement. Combined with proper appliance venting, working detectors protect your household from this silent hazard.

What are the carbon monoxide concerns an inspector checks for?

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