A condensing boiler is a hot water heating device designed to recover energy normally discharged to the atmosphere through the flue. When a condensing boiler is working at peak efficiency the water vapour produced by the burning of gas or oil in the boiler condenses back into liquid water - hence the name "condensing boiler". The condensation of exhaust gases releases the latent heat of vaporization of the water, a more significant source of energy than the transfer of heat by cooling the vapour. By recovering the heat produced as water vapor, a condensing boiler will regain 970btuh/pound of condensate(the water vapor released whenever you burn fossil fuels).
Typical manufacturers of residential condensing boilers:
- Weil-McLain
- Burnham
- Viessmann
- Munchkin
- Atmos Heating Systems
