Which action best helps prevent carbon monoxide buildup when venting a gas dryer?

Which action best helps prevent carbon monoxide buildup when venting a gas dryer?

• A. Vent gas dryer into a sealed room without outdoor vent.
• B. Share the vent with other appliances.
• C. Ensure combustion air and proper venting to outdoors to prevent CO buildup.
• D. Disable the vent when the dryer is on.

Answer: (C)

Gas dryers burn fuel and produce carbon monoxide, so having enough surrounding air for combustion and a vent path that carries the exhaust outdoors is essential. When combustion air is adequate, the gas can burn more completely, reducing CO production. When the vent leads to outdoors, the CO and other exhaust byproducts are removed from the living space, preventing buildup. Venting into a sealed room or sharing the vent with other appliances traps exhaust, and turning off or disabling the vent stops removal of CO, making the problem worse. In short, provide proper outdoor venting and ensure the dryer has a steady supply of combustion air to keep the exhaust, including CO, out of occupied spaces.

Gas dryers burn fuel and produce carbon monoxide, so having enough surrounding air for combustion and a vent path that carries the exhaust outdoors is essential. When combustion air is adequate, the gas can burn more completely, reducing CO production. When the vent leads to outdoors, the CO and other exhaust byproducts are removed from the living space, preventing buildup. Venting into a sealed room or sharing the vent with other appliances traps exhaust, and turning off or disabling the vent stops removal of CO, making the problem worse. In short, provide proper outdoor venting and ensure the dryer has a steady supply of combustion air to keep the exhaust, including CO, out of occupied spaces.