“…Domestic space heating has been dominated by fossil fuels, efficiency improvement in space heating will thus reduce greenhouse gas emissions [4,7,[11][12][13]. Heating system efficiency depends upon the thermal performance of the building envelope, occupancy [14] and climate, as well as the performance the system's component parts [15][16][17][18][19][20]. Whilst, in most heating systems well-functioning energy efficient components are installed these components may not be (i) optimally adjusted to the particular variations in energy load encountered and (ii) set-up to optimally communicate effectively with one another [9,15,18,[20][21][22].…”