As our best and most efficient heat pumps, SPRSUN monoblock DC inverter air source heat pumps are designed for hot water, house heating and cooling. Working at as low as -20℃, they have a maximum heating capacity from 9.5KW to 32KW, with maximum outlet water temperature 60℃. These top heat pumps have been rated as ERP A+++ Energy Level due to their high COP up to 5.65, which can help save a lot of energy costs in domestic settings.