Method, system and computer program product for controlling an HVAC system

A method of controlling a Heating, Ventilating and Air Conditioning (HVAC) system comprising a fluid transportation network that comprises one or more network sections, each network section being connected to a fluid transportation circuit through respective supply lines and return lines, each network section comprising a plurality of zones that are parallel, the method comprising:

• arranging a pressure regulating device in the supply lines and/or respective return lines of the network sections;
• arranging flow regulating devices in the zones of the network sections;
• arranging a pressure sensor for measurement of a remote differential pressure in a first zone, the first zone having a highest fluid resistance among the plurality of zones within the respective network section of the one or more network sections;
• measuring a remote differential pressure of the fluid in the first zone of the plurality of zones of each of the network sections;
• and
• controlling, by a controller, the pressure regulating devices of each network section to maintain the measured remote differential pressure within a specified differential pressure range.