A temperature of 18 degrees centigrade is fine for most people. But older people may need the temperature indoors to be slightly higher.
If you can’t heat all the rooms you use, heat the room you spend most time in during the day and your bedroom just before bedtime. Close curtains before sunset and shut doors and windows to keep heat in the room you use the most.
For full information about winter warmth, particularly for those with health conditions that may be affected by cold weather, such as respiratory or circulatory conditions, see the NHS Choices Keep Warm, Keep Well pages.
Information about local services that can help this winter are available on the HIVE Portsmouth directory and the Health and Social Care service directory.