According to the Federal Emergency Management Agency:
- It’s important that you have your furnace inspected by a qualified specialist according to manufacturer guidelines to ensure that it is in good working condition. Do not attempt repairs yourself unless you are qualified.
- Be sure all furnace controls and emergency shutoffs are in proper working condition.
- Keep trash and other combustible material away from your heating and water heating systems.
- Keep natural gas vents unobstructed and free of debris. Some direct-vent and high-efficiency appliances have direct side wall outdoor vents and air intakes that could become obstructed during heavy snowfalls.