The Air Conditioner Heater Hose circulates coolant between the engine and the air conditioner and heater core in a machine's air conditioning and heating unit. when the heating unit is activated, the hose carries coolant from the engine to the heater core, which transfers heat to the cabin. The coolant then flows back to the engine through the hose, completing the heat exchange process. Attributes:• Absorb vibrations and minimize stress on the hose and its connections, reducing the risk of failure• Manufactured to precise specifications and are built for durability and reliabilityApplications:The Air Conditioner Heater Hose acts as a conduit or pathway for the circulation of coolant which absorbs heat or cooling, to the desired components and returns it to the engine for the heat exchange process.