Compatibility: 2004-2010 Toyota Sienna For more details, pls check compatibility Chart. What is AC condenser and why is it necessary to replace it? The air conditioner condenser is the radiator that sits between the car grill and the motor radiator. In the condenser, the gaseous refrigerant gives off heat and returns to a liquid state. In other words, the condenser condenses the refrigerant from a gas to a liquid. The refrigerant carries the lubricant that the compressor needs to operate, so refrigerant leakage increases friction. A clogged or damaged condenser can also lead to compressor failure, as a poorly functioning condenser cannot remove enough heat from the refrigerant. .
