Vaillant have launched an air to water heat pump today. Although they have had a range of ground source heat pumps for several years, this is their first air sourced heat pump which can provide heat to domestic heating and hot water circuits. Ideally suited to underfloor heating in well insulated properties, particularly those without mains gas connection, the unit is easy to fit requiring just flow and return connections and an electrical supply. The unit will qualify for payments under the renewable heat initiative.