The Open University are asking you to take part in research that is being conducted as part of the MK:Smart project. The aim of the research is to evaluate colour schemes that better represent level of heat loss of buildings in an on-line map.
The heat loss of a house is related with the energy you would need to use to keep it warm and comfortable. You could be in a nice warm place that it is losing a vast amount of heat through its roof because it is badly insulated, but you would still feel comfortable at the expense of a big sum of money to run the heating system:
It’s fun to fill and it takes around 10 minutes.