Masonry heater

A masonry heater is a special kind of fireplace. It looks like a big, rectangular box made of stone, brick, or stucco that is built against one wall in a house. The heater uses a lot of firewood to heat up the stone blocks inside it, and then the heat is released slowly over a long period of time, keeping the house warm. The firewood is burned in special firebins that have a draft, which helps keep the fire safe and burning. The heat from the fire is released through a chimney, and the warm air radiates out from the stone blocks to keep the house cozy and warm.