Boiler is for a three bed house with a single bathroom. Boilers are somewhat more energy-efficient, but they also spend less in another manner. There are many different kinds of boilers readily available, including high-efficiency units made to help homeowners rein in high heating expenses.Replacing your boiler may be an expensive prospect, based on where you are and the degree of the job. A new boiler could significantly reduce your carbon emissions and lower your electricity bills. If you opt to put in a new boiler in the area of an aged energy-inefficient one, you can expect to save a little money on your gas bills.