98% Efficient Electric Heating Boilers for House Radiant System ETL Approved US$245.00-281.00 / Set CE Hydronic Heating System Boiler for Floor Heating and Dhw Combi Electric Boiler US$295.00-336.00 / Piece Residential R290 ...
Thus, the condensing combi boiler efficiency can be increased by as much as 10%. For this purpose, equations of annual fuel consumption and condensed water vapour quantity are identified and also life cycle costs method has been used to analyse the feasibility of both combi boilers. It is ...