According to the International Energy Conservation Code, hydronic piping must be insulated to what requirement?

The correct answer is based on the requirement that hydronic piping must be insulated according to specific thickness requirements established by the code. The International Energy Conservation Code (IECC) sets minimum insulation levels to minimize heat loss and improve energy efficiency in buildings. Proper insulation of hydronic piping is crucial for maintaining the energy efficiency of heating systems, as it reduces energy waste by maintaining the temperature of the water within the pipes.

Insulation thickness is determined by factors such as pipe size, system temperature, and the environment where the piping is installed. These code requirements provide a standardized approach to insulation that ensures consistent energy conservation practices across different installations. By adhering to the thickness requirements provided in the code, builders and contractors can ensure compliance with safety, performance, and efficiency standards that benefit both the building occupants and the environment.