High Efficiency Modulating & Condensing Boilers

The GreenHomeTV Home Addition Project will have as it’s primary heat source a Viessmann Vitodens 100 Wall Hung Boiler that has maximum efficiency of 95%. It achieves this high efficiency by modulating and condensing; but what exactly do these terms means.  Peter Kinsey of Canadian Infloor Heating and Robert Zwicker of Viessman Canada explain these key features in technical and practical terms.


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