With us, neither is true, and we will explain why:
1. Cool Magic cools the extract air from the house before it enters the ventilation heat exchanger. This means that we cool air which has temperature of e.g. 24 °C.
2. When entering the Cool Magic cooler, this extract air is cooled to approximately 2 °C.
3. This cooled extract air then encounters in the heat exchanger fresh air coming from the outside which has a temperature of e.g. 32 °C.
In addition to cooling, the fresh air is subject to condensation and significant dehumidification.
4. After switching the flow in the individual layers of the heat exchanger, the condensed humidity evaporates into the dry exhaust air. Engaging the adiabatic cooling effect multiplies the efficiency.
The result is a supply air temperature of around 15 °C at a relative humidity of 50% = a perfectly healthy climate.