What is it?
A condensing boiler is usually fuelled by gas or oil and is more efficient than an old style conventional boiler.
How does it work?
All boilers lose heat via the hot gases that escape up the flue. A condensing boiler extracts additional heat from the waste gases by condensing this water vapour to liquid water, thus recovering its latent heat.
Creating heat and hot water in the average home can account for up to 60% of an energy bill. A well maintained condensing boiler can therefore have a big impact on reducing energy consumption and CO2 emissions.
According to the Energy Saving Trust, the potential annual savings, when compared to an old style boiler, could be between £105-£300.