Heating with radiators
Ground source heat pump systems can be used with radiators but must be oversized to deliver the appropriate flow temperatures.
To get the most efficient operation from a heat pump it is important that the outlet temperature is kept as low as possible. For this reason, underfloor heating with its larger heat emitting area has generally been favoured.
However where this is not possible radiator systems can be used, but must be oversized to deliver flow temperatures compatible with the heat pump (typically 45ºC).