An air conditioning hose pipe, also known as the refrigerant line, is a tube that carries refrigerant between the air conditioning unit's indoor and outdoor components. The hose connects the evaporator coil in the indoor unit to the compressor in the outdoor unit.

The function of the air conditioning hose pipe is to circulate refrigerant, which absorbs heat from the indoor air and releases it outside. The hose pipe transports the refrigerant in a closed loop system, where it changes from a gas to a liquid and back again to remove heat from the indoor air.

The air conditioning hose pipe is an essential component of the air conditioning system, as it allows for the transfer of heat between the indoor and outdoor units. If the hose pipe becomes damaged or develops a leak, it can cause the refrigerant to escape and result in a loss of cooling efficiency or a complete system failure.

Regular maintenance and inspection of the air conditioning hose pipe can help to prevent issues and ensure proper functioning of the air conditioning system.