I am concerned about turning the heating much lower. When I first moved in, I had terrible problems with damp and black mould on walls in my wardrobes and in the corners of two of my bedrooms. My lounge always felt cold, I even had complaints from visitors!
My boiler was inadequate for the size of the bungalow, I was told this by the surveyor so always planned to replace it. My bungalow is built in an area that used to be boggy farm land and underground water seeps into the floor space after heave rain - it was designed to do that.
Once I replaced the boiler and also installed a positive air exchange unit in the hall, the damp disappeared and has not been a problem since. But obviously I don’t want the problems to reoccur so am reluctant to drop the temperature below 19 degrees which I set last winter. I did reduce the time it was on, from 8 am to 9 pm but did not vary the temperature when I went out as it takes a while to warm the house up again - I don’t have a gas fire, just the central heating.
So I’ll be looking at other ways to reduce energy use if needs be, like not using the oven unless I fill it, less washing, double spinning clothes and trying to dry outdoors every time.