All gas appliances designed to be vented must be vented properly to the outside so that CO will not build up in your home, cabin, or camper.
Never disconnect, shorten, block, damper or divert a vent pipe.
Horizontal vent pipes to fuel appliances should not be perfectly level. Indoor vent pipes should go up slightly as they go toward outdoors. This helps prevent CO or other gases from leaking if the joints or pipes aren't fitted tightly.
Never patch a vent pipe with tape, gum, or something else. This kind of patch can make CO build up in your home, cabin, or camper.
Have your solid fuel burning chimney checked or cleaned every year. Chimneys can be blocked by debris. This can cause CO to build up inside your home or cabin.