http://www.which.co.uk/energy/creating-an-energy-saving-home/guides/heating-controls---five-money-saving-tips/

How to use your heating controls effectively
Tips to reduce your energy bills
Simple changes you can make to save cash
Advice on whether you need new heating controls

Using your heating controls efficiently is a simple way to cut your energy use - follow these top tips to get the best from your heating system without overheating your energy bills.