Is back-up/emergency heat required with Robur heat pumps?
The Robur air-water heat pump systems are capable of operating down to -20°F, which is much lower than the typical electric heat pump. However, as the ambient temperature lowers so will the heat energy available and thus a lower system capacity. Depending on your design temperature and the lowest expected ambient for your area, a back-up heating system may be required. However, it may be used only a very small portion of the time with a Robur heat pump as compared with an electric heat pump.
