Many people lower the normal room temperature when they are sleeping or are not at home. This might seem like a good idea because using less gas saves on energy costs There are a number of problems with this approach. Firstly, your boiler will have to work harder to reach your set ambient room temperature, increasing fuel usage. Secondly, when you get home it will takes some time until the rooms are pleasantly warm.What is the ideal room temperature? Older properties were not design...