The award-winning C.H.E.E.S.E. Project reveals energy waste from homes by using low-cost interior thermal imaging surveys. These reveal faults in construction, insulation, draughts, etc. A third of energy lost from homes is through draughts.The aims are 1. to reduce fuel poverty and 2. carbon footprints to mitigate climate change. Surveys require cold weather, so are carried out from November to end March, they are free to low income families. Begun in 2014 with funding from Bristol Green Capital we have developed and expanded our unique survey method over 4 seasons with highly successful results. Three quarters of those surveyed take remedial action within three months and landlords (including the Council) are persuaded to improve properties.