Condensing boiler or low temperature boiler
Condensing boilers are designed in such a way that the flue gases can largely condense in the heat exchanger, so that that heat is recovered. These gases are lost in a conventional boiler. A low temperature boiler keeps the water on average at 35 to 40 ° C - in contrast to 70 to 85 ° C with a traditional boiler. Condensation is possible under certain circumstances.