What is the common suction line on a heat pump connected to?

The common suction line on a heat pump is typically connected to the indoor coil and the compressor. This configuration allows for the circulation of refrigerant that absorbs heat from the indoor environment.

In heating mode, the refrigerant vaporizes as it passes through the indoor coil, absorbing heat from the indoor air. The suction line then transports this low-pressure vapor back to the compressor, where it is compressed into a high-pressure gas. This process is essential for the heat pump's operation, as it enables the unit to efficiently transfer heat from one location to another.

The connection to the indoor coil is crucial because this is where the heat exchange occurs, making this line an integral part of the heating cycle. The connection to the compressor ensures that the cycle can continue, maintaining the functionality of the heat pump system.