Investing in thick curtains can also help, according to the company.
The next thing you can do is use timers on your central heating to reduce heating costs.
The Centre for Sustainable Energy advises that programming your boiler to turn the heating on a little earlier – such as 30 minutes before your get up in the morning – but at a lower temperature is cheaper than turning it on just as you need it at a higher temperature.
The Centre for Sustainable Energy said: “A boiler heats up at a constant speed whenever you set your thermostat to 20 degrees or 30 degrees.”
source: express.co.uk