The calculator below is meant only as a guide

Room Height (m):
Room Width (m):
Room Length (m):
Total Window Area (msq):
What is the room?:	Please Select... Lounge Room Bedroom Bathroom Hallway/Kitchen
What's below?	Please Select... Heated room Wooden floor soil underneath Solid concrete floor soil underneath Suspended concrete floor with air gap below
What's above?	Please Select... Heated room Pitched roof not insulated Pitched roof 50mm insulation Pitched roof 100mm insulation Flat roof not insulated Flat roof with insulation
Type of exterior walls:	Please Select... Brick with a Cavity Brick with insulated Cavity Solid brick 105mm Solid brick 220mm Wooden frame
Window Type:	Please Select... Wood/Plastic double glazed Double glazed metal Single glazed metal Single glazed Wood
How many exterior walls?	Please Select... 1 2 3

Watts Required:

BTU's Required: