Masseovne.dk

A masonry heater burns ordinary split logs. In my heaters, combustion can reach around 850 °C. The large stone mass stores the heat and releases it slowly, keeping room temperatures steadier.

In a typical detached home, a fire lasting one and a half to two hours can often be enough for a day. You light it to keep the house from getting cold. How often you need to fire it depends on the home and its heating needs.

Wood stores energy from the sun. I see a role for leftover wood as a source of heat when it is unsuitable for other uses. A baking oven lets you use the stored heat for bread and cooking.

A built-in heat exchanger can carry some heat to other rooms, for example through underfloor heating. It can also help heat domestic water. Meeting several heating needs may require firing more often.

Through the glass door you can see and hear the fire. One customer told me that with the fire going, they never felt alone at home.

I have built more than 700 masonry heaters since 1997. The designs have changed a little, but the principle is the same: the stone stores heat and gives it back slowly.

Leif Hermansen