Simple Home Heating Model

Introduction This simple model for heat loss from a house gives you an idea of what proportion of heat loss is through the different elements (walls, windows, roof etc.) and how much you might save if you added insulation or draught proofing. Update the details below to reseemble your house. and see what savings you can make.

Results

Shape:

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Heat loss initially: X W/C/m² Help


With changes: X W/C/m²

Key
walls-1 walls-2 windows-1 windows-2 door-1 door-2 roof floor thermal-bridging draughts

Help

Set shape and other details

First select the general shape of your house:


form:
total floor area in square meters (typical values: terrace: 88, semi-detached: 97, detached: 149)
floors: (excluding converted roof space)
windows:
age (for thermal-bridging Help):
Set construction details
What it is nowWith changes you are considering
walls-1
walls-2
proportion of wall type1:type2

windows-1
windows-2
proportion of window type1:type2

door-1
door-2
roof
floor
draughts
See calculation details

For details of how the calculations have been done see Help.

Heat loss initially

parttypeu-value/acharea/volumeheat loss W/C
walls-1XXXX
walls-2XXXX
windows-1XXXX
windows-2XXXX
door-1XXXX
door-2XXXX
roofXXXX
floorXXXX
thermal-bridgingXXXX
draughtsXXXX

With changes

parttypeu-value/acharea/volumeheat loss W/C
walls-1XXXX
walls-2XXXX
windows-1XXXX
windows-2XXXX
door-1XXXX
door-2XXXX
roofXXXX
floorXXXX
thermal-bridgingXXXX
draughtsXXXX