Mākoņkalns, privātmāja - the building is equipped with flat-plate solar thermal collectors SolvisFera 802-I with a total area of 8.5 m2. Such system is already capable to ensure some support for heating. A system of a multifunctional heat storage tank and integrated gas boiler (SolvisMax Gas) is used as a primary heat generator. A fireplace with a water jacket brings additional comfort.