Cooling module

The cooling module works with passive cooling – also known as free cooling – which is ideal in homes that only occasionally require cooling or if you want a cooler temperature in just a few specific rooms. By circulating the cool liquid in the collector loop (in the borehole, ground or lake), cooling is created at very low cost. The Thermia Passive Cooling Module is included as standard in Thermia Comfort Optimum. All other Thermia heat pumps are compatible with the module, except air-source heat pumps. Optimum module is equipped with low-energy Class A circulation pumps.

Cooling is produced in two steps. The first is called passive cooling and is fully sufficient for many applications. When passive cooling is not enough to keep the temperature down, step two, or active cooling, is activated. In step two, the heat pump compressor is used to produce cooling and this lowers the temperature in the house’s cooling/heating loop even more. The Optimum module is equipped with low-energy circulation pumps.

It is worth bearing in mind that passive or passive/active cooling is several times cheaper than traditional air conditioning. For example, passive cooling consumes around 0.2 kW (circulation pump).