How does Altherma work?

Heat pumps take thermal energy from the atmosphere, or from water (rivers, lakes, etc.) or from the ground. With Altherma energy is extracted from the outside air which is cheaper and easier than the other alternatives. In order to take energy from the air the heat pump needs a bit of energy to start with: Altherma requires only 1 kilowatt of electricity to pump 3 to 5 kilowatt of heat into your home. In other words, 66 to 80% of the heat produced by Altherma comes from the outside air and is free of charge.

Altherma’s air-to-water heat pump boiler quickly creates an optimal room temperature for you and your family. You enjoy a comfortably warm environment in just 3 steps:

The heat pump extracts free low temperature heat from the outside air.
The system raises the temperature of the recovered heat.
This greater warmth is then distributed throughout your home via heating emitters.