Wood furnace, generally placed outdoors, is a coal fired furnace that is virtually irreplaceable in your house.
There are indoor wood furnaces as well, but it is preferable to place them outdoors. There are even models fitting to woodsheds and shops.
Is it a whole set?
What objects does wood furnace heating system comprises?

Jacket or cabinet
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One of the main disadvantages of having a fireplace is its inefficiency. The core purpose of the fireplace is to warm and indeed, it does warm your room when burning. But when you’re not using your fireplace there is a convention between inside and outer air which is extremely wasteful.
It happens because of a fireplace [...]