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Excerpt from a previous thread. A member asked..... "Starting our extension and renovation fairly soon so I am now looking at the type of heating system to go for. The house is roughly 100m² footprint and 450m³ volume. Insulation levels are expected to be better than building reg standard but not upto PH standard. Plan for heating and DHW in the house is as follows: UFH throughout with no rads, two towels warmers to be used though. One bath, two showers and four sinks (not decided whether both showers will be DHW or one electric yet but say both DHW for this example). Average usage of one shower and one bath per day From jsharris spreadsheet I figure that my worst month at minimum OAT heat input would be 1398kWh based on daily heat loss power of 1878W. Ideally we would like the boiler hidden from view and this could be house in either the garage or loft as both have ample space. We have both gas and electricity to the house so we are open to a wide range of possiblilities. Anyone have any thoughts on which type of boilers I should be considering? As far as manufacturers go I am willing to invest a little more for better quality (brands I have investigated so far are Valliant, Baxi and Ideal).
