The CPS multi-purpose units, made by optimising the system connection between an NRP four-pipe multi-purpose air-water unit and a WWB water-water heat pump at extremely high temperatures, are designed to meet the needs of residential buildings and accommodation facilities that require the simultaneous availability of heating and cooling plus high-temperature water (up to 73°C on leaving the machine) for heating and/or DHW production. These units can also be used in various types of industrial process. They consist of four cooling circuits, two circuits (C1/C2) with R410A gas, two circuits (C2/C3) with R134a gas, and three plate heat exchangers (one for chilled water, one for hot water at medium temperature and one in examinable stainless steel for hot water at high temperature – DHW). The base, structure and panels are made of galvanised steel treated with RAL 9003 polyester paints.