If your boiler is more than 15 years old then it probably won’t be a condensing boiler and will not be as efficient as it should be. A new high efficiency condensing boiler with a full set of controls can save you up to £235 a year off of your heating bill and 1,300kg of CO2.
Knowing what size and type of boiler you need to get can be a tricky business but the Energy Saving Trust can give details on the options available and have created a frequently asked questions section to help you. Work on gas appliances must be carried out by a Gas Safe registered engineer (Gas Safe register replaced CORGI on 1st April 2009).
It is important to make sure your home is properly insulated before you fit a new boiler otherwise you may not get the right size or be able to benefit from as much saving in your heating bills.