What is a Condensing Boiler?
A condensing boiler is a modern boiler that incorporates an extra heat exchanger so that the hot exhaust gases lose much of their energy to pre-heat the water in the boiler system. When working at peak efficiency, the water vapor produced in the combustion process condenses back into liquid form releasing the latent heat of vaporization.
High efficiency condensing boilers are more than 90 percent efficient, meaning that over 90% of gas consumed when the burner is firing is converted into heat for the heating and hot water system.
Our Environment:
Older boilers in use operate at 70-75 percent efficiency, with some even as low as 50% efficiency. They consequently have a greater impact than high efficiency boilers do on both the environment and fuel bills.