The Uppsala is powerful yet frugal with a good size tough firebox, designed to keep your house warm 24/7 whilst maintaining a clean burn even when shut down. 200kg of natural Soapstone will maintain embers in the firebox for many hours, while radiant heat from the soapstone remains warm for long period of time even after the fire has gone out. This makes the need to burn overnight in many cases unnecessary. Uppsala has one of Euro Fireplaces longest ember retention times.