REYAQ-P is an air conditioning technical data. The major features are temperature control, fresh air provision, biddle air curtains and hot water production all integrated in a single system. The heat recovery maximises its energy efficiency with COPs of up to 8 possible. It provides free heating by transferring heat from areas requiring cooling to areas requiring heating or hot water. It gives a perfect comfort by giving simultaneous heating and cooling. It has a compact size which leaves maximum floorspace. REYAQ-P fits any building with either outdoor or indoor installation possible. This device has an ability to control each conditioned zone individually keeps VRV® system running costs to an absolute minimum. It spread the installation cost by phased installation. It has a wide range of indoor units i.e. 15 different models in a total of 76 variations.