There are a number of cheap or free steps you can take to cut energy bills. For example, households can typically shave £160 off their annual costs with three “no-cost tweaks” to their home heating, according to Katy King, the deputy director of sustainable future at the charity Nesta. “Reducing boiler flow temperature to 60 degrees and setting hot water temperature at 42 degrees on a combi boiler, as well as turning down radiator valves, together should lower costs while maintaining comfort,” King says. Turning down the boiler flow temperature results in an average annual saving of £65, while adjusting…