The system is a 2 ½-storey brick masonry heater of Finnish design. The heater includes a cook stove, oven, bread oven, and 2 fireboxes; one in cook stove and another on opposite side of brick mass.
Heat from both fireboxes is circulated through and absorbed by mass. A copper water coil is installed in the heat mass which provides all domestic hot water winter and summer. Hot water is stored in an external tank. The masonry heater sits in front of large south facing windows allowing the mass to absorb passive solar heat.
The total annual heating, hot water and cooking cost is around $400 to $500, depending on the price of local cord wood. The system requires approximately 2 cords per year.