These cooling products dissipate heat from liquid by way of a radiator with forced airflow. They are ideal for applications where the liquid does not need to reach ambient room temperature. Koolance's performance ratings use a 25°C delta-T, meaning the rated amount of heat is being dissipated with liquid 25°C above the air temperature. The greater a system's performance rating is relative to the actual heat load, the closer to ambient temperature the liquid can reach.