WHP S 100 is the new and innovative ultra-flat rectangular inertial storage tank with a capacity of 100 litres, designed to guarantee the minimum water content in the system for the correct operation of the heat pump (HP). Designed to be positioned outdoors. It also acts as a base to support the HP (max 200 kg). These features make it unique and exclusive and definitively eliminate the need for additional indoor space. Already prepared with anti-vibration HP support kit. Pre-arranged for installation of the expansion tank through the special kit supplied separately.