Old gas boilers can waste up to £500 a year in energy bills however you can prevent this by following some relatively simple and free home hacks.
According to the energy comparison site Uswitch, there are 23million homes with a gas boiler in the UK however a lot of these boilers may not be running as well as they could be.
Boilers usually make up around 50% of your yearly energy bill and Uswitch says that the lowest-grade models can waste around 40% of the money you spend on your gas.
