I have just moved into a semi-detached house (rented) made out of cob, heated with a wood burner which also heats up the water for radiators and washing. There is also a large boiler,electrically heated, for hot water in the summer. The house is on two floors and there is a loft under the main roof . This seems to act as a buffer in warm a days, releasing heat at night. Unfortunately the windows are single glazed and although the walls are insulating, all the heat escapes through the windows and there is a lot of condensation too.
What could be some strategies to improve heat management especially in the winter?