An appliance could produce carbon monoxide if:
- Boxes, laundry or other materials are blocking the base, restricting airflow.
- The vent hood, pipes or flues are blocked or corroded.
- The unit is installed or adjusted improperly.
- It’s used incorrectly (i.e., heating a room with a gas stove or using a gas or charcoal grill indoors).
- The heat exchanger is cracked.