to be thought about now. but living in a really cold house to be thought about now. but living in a really cold house for to be thought about now. but living in a really cold house for a - to be thought about now. but living in a really cold house for a long i in a really cold house for a long time can affect our physical and mental health. so what can they do to keep costs down? here are the bbc s five tips which could save as much as £500 a year on a typical energy bill. if you rent, you might need to check with your landlord first. turn the thermostat down to 18 to 21 celsius when the heat is on. consider reducing your boiler flow temperature to 60 degrees. have your radiator is turned down. turning on the radiators not at full blast was a new idea to me. draught roofin: blast was a new idea to me. draught proofing your blast was a new idea to me. draught proofing your doors blast was a new idea to me. draught proofing your doors and blast was a new idea to me. draught pro