American Home Inspectors Training (AHIT) Practice Test

In a steam heating system, the normal operating pressure typically falls within the range of 2 to 3 psi. This pressure is adequate to effectively transfer heat through the system while maintaining efficiency and safety. Operating at this pressure allows for sufficient steam generation to distribute heat adequately throughout the building or area being heated. Lower pressures, such as 1-2 psi, may not provide enough energy for effective heat transfer, potentially leading to inadequate heating performance. Similarly, pressures above the normal operating range could lead to inefficiencies and unnecessary wear on system components, not to mention potential safety hazards. Therefore, 2-3 psi serves as the standard range ensuring optimal performance and safety in steam heating systems.