A larger stove has a greater output, that it gives off more heat than a smaller one. There are also good ways of getting even more heat out of your stove. Soapstone is a naturally heat retaining material. With a soapstone surround the stove can remain warm for several hours after the embers have died. The soapstone has a unique natural veining, which means that no two stoves are the same. Contura 690T can be combined with heat retaining Powerstone.