What is the minimum required clearance to combustibles for a boiler?

The minimum required clearance to combustibles for a boiler is 18 inches. This requirement is established to prevent fire hazards and ensure safe operation of the boiler. The space allows for adequate airflow, helps to dissipate heat, and provides sufficient room for maintenance and inspection activities. Maintaining this distance is crucial because it reduces the risk of ignition of nearby combustible materials and provides a buffer zone for heat dissipation.

It's important to adhere to local codes and manufacturer specifications, as they may dictate specific clearances based on the boiler's design and fuel type. In this case, the selected answer accurately reflects the standard clearance requirement recognized in many codes for safe boiler operation and installation.