Before installing a furnace (except a domestic furnace) in a
building or fixed boiler, you must inform the council. The furnace
must be capable of operating continuously without emitting smoke
when burning fuel. The fuel used must be the type the furnace was
There is no set definition of 'furnace'. But a practical
'Any enclosed or partly enclosed space in which liquid,
solid or gaseous matter is burned, on in which heat is
Domestic furnaces are defined as those with a maximum heating
capacity of less than 16.12 kilowatts.
Note: You should contact the council’s Development Control Section to find out if you need
planning permission to erect a chimney.