In HVAC systems, what is typically the source of electrical energy?

In HVAC systems, the primary source of electrical energy is typically the electrical power supply from the local grid. This is because most HVAC systems are designed to operate using high-voltage electricity that is delivered through the electrical grid, providing a reliable and consistent power source required for the operation of components like compressors, fans, and control systems.

The local grid supplies alternating current (AC), which is the standard form of electricity used for most HVAC equipment. While there are alternative energy sources such as solar panels, battery backups, and wind turbines, they are usually not the main source for traditional HVAC systems. Instead, they may serve as supplemental or auxiliary power solutions. For example, solar panels and wind turbines can provide renewable energy, while a battery backup might be used for emergency power during outages but isn't typically relied upon as the primary energy source for everyday HVAC operation.