The two secret boiler buttons that could help slash your energy bills by £325 a year

A BOILER expert has revealed how two secret buttons on your boiler could save you up to £325 a year on your energy bills.

Around 80% of new boilers sold in the UK are combi boilers, according to Uswitch, which is where your central heating and hot water are provided by one unit.

This type of boiler is supposed to be more efficient than having separate tanks.

But one small setting...