Householders have embraced eco-efficient appliances, ones that minimise the use of water and energy. They now buy the most efficient models – 80% of washing machines and 90% of fridges sold are now top efficiency. Using a top-rated machine at home – a small individual action – can make an environmental difference because of the combined effect of the large numbers of appliances involved. Nowadays 98% of homes have at least one large appliance. Ownership of refrigerators is almost universal at 99% and homes have become so reliant on our freezers that over 2 million are owned in four-freezer households.