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Heat Loss Calculator
Room-by-room heat loss calculation (BS EN 12831)
Property Name
Room 1
Room Type
Living Room
Dining Room
Kitchen
Bedroom
Bathroom
En-suite
Hallway
Landing
Utility
Other
Length (m)
Width (m)
Height (m)
Desired Temp (°C)
Wall Type
Solid Brick
Cavity Uninsulated
Cavity Insulated
Timber Frame
Stone
External Walls
Glazing Type
Single
Double (pre-2002)
Double (post-2002)
Triple
Window Area (m²)
External Doors
Door Type
Solid Timber
uPVC
Composite
Floor Type
Solid Uninsulated
Solid Insulated
Suspended Timber
Suspended Insulated
Roof Type
Pitched Uninsulated
Pitched 100mm Loft
Pitched 270mm Loft
Flat Uninsulated
Flat Insulated
Exposure
Sheltered
Normal
Exposed
Ground floor room
Top floor / loft above
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