What is the primary function of a transformer in an HVAC system?

A transformer plays a crucial role in an HVAC system by adjusting voltage levels to suit different components of the system. Specifically, it can either step up (increase) or step down (decrease) the voltage. This adjustment is essential because various parts of the HVAC system operate at different voltage levels. For instance, certain components like thermostats and relays may require lower voltage for operation, while compressors might need higher voltage. By ensuring that each component receives the appropriate voltage, the transformer helps maintain safe and efficient operation throughout the HVAC system. Understanding this function is vital for anyone working with HVAC systems, as it can affect overall system performance and reliability.