What is the recommended distance between a water heater and combustible material?

The recommended distance between a water heater and combustible material is at least 18 inches to ensure safety and reduce the risk of fire hazards. This clearance allows for adequate ventilation around the water heater, which is crucial because the heater can generate heat and may release flammable fumes during operation. Keeping combustible materials, such as wood or fabric, at a safe distance minimizes the chance of these materials igniting.

The specific distance helps to conform with plumbing codes and safety standards, which are designed to protect both property and occupants. In practice, ensuring this clearance not only contributes to safety but also facilitates access for servicing and maintenance of the water heater, further lowering the risk of accidents or malfunctions.