Electronically controlled high-efficiency pumps for heating, air conditioning, cooling and sanitary water. The NMT (new motor technology) circulating pumps are used for the transfer of liquid medium within systems for hot-water heating, air-conditioning and ventilation. They are designed as single or twin variable-speed pumping aggregates where the speed is regulated by electronic device. The pump constantly measures pressure and flow and adjusts the speed according to the set pump mode.