The differences between the production of a condensing boiler or a traditional “boiler”
aren’t measurable only with the recovery of a part of the heat given to the steam , but also
with a substantial control of a sensitive heat losses through gas, thanks to a low products
temperature of combustion.
The choice to make a condensing boiler to operate with low temperature
helps to pull down the radiation losses, tied to the difference of temperature between surroundings
environment and heat exchanger.