Heat demand and efficiency should not be treated as the same thing. Heat demand describes how much thermal energy a building needs. Efficiency describes how much electricity is required to supply that energy. A highly efficient heat pump in a large or high-demand building may therefore consume more electricity than a lower-output system serving a small, low-demand building.<\/p>\n
Assessing the building, heat emitters and heat pump together is especially important in renovation projects. Existing radiators do not automatically prevent efficient heat-pump operation, but their output at the intended water temperature must be checked against the room heat load.<\/p>\n
System integration and control<\/h2>\n
Published product ratings cannot describe every hydraulic component, control decision or auxiliary electrical load in an installed heating system. The way the equipment is integrated therefore influences how closely actual performance approaches the expected seasonal result.<\/p>\n<\/div><\/div><\/div><\/div><\/div>