What are the two types of energy most frequently used or considered in the HVAC industry?

The two types of energy most frequently used in the HVAC industry are electrical energy and thermal energy. Electrical energy powers HVAC systems, including compressors, fans, and controls, while thermal energy is utilized for heating and cooling through systems like boilers and chillers. Additionally, the efficiency and management of these energy types are crucial for optimizing system performance and reducing operational costs.