The applications mentioned in this article are only a portion of what a condenser or a heat exchanger can be used for. There are specific applications for a condenser and a heat exchanger and they are not interchangeable. A condenser changes the phase of the load by taking a vapour and changing it to a liquid, while a heat exchanger does not change the phase of the load and takes a liquid and changes the temperature by exchanging the heat by cooling one liquid and heating the other.