The Masonry heater goes by many different names; Finnish Fireplace, Wood Heater, Kachelofen, Grundofen, Varaava Takka, Tile Stove and Ceramic Stove among others. All of these names refer to a large, specially-constructed fireplace that uses small amounts of fuel and is capable of heating an average family home. Although not always appropriate in a retrofit application, in the cold Canadian climate they are a sustainable home heating alternative in new home construction.

Masonry heaters first appeared in Northern Europe in the early 16th century. Historically, they were used in the kitchen, combining a stove, oven and seating areas. Located in the center of the home, they were fired twice daily for the preparation of meals and heating. The heaters were in all homes regardless of social status; however they varied aesthetically from white wash clay to ornate masterpieces.