I am very happy with marble slabs heating so that my two air- conditioning units are only used for dehumidifying, without heating. My apartment is on the northern side facing the Dinara mountain so the wind gushes are really strong. The air- conditioning dries the air too much so I decided to buy the 2 marble slabs. In combination with new aluminium windows I previously installed, MRAMOTERM heating represents the best solution for heating of apartments. I will add two more slabs this autumn and complete the central heating system in my apartment (60 m2).