EQ 6.3 now is granted for having 2 or more distinct zones with independent thermostatic controls. Independent zones must include separate loops and separate pumps controlled automatically by a thermostat control. Simply having flow control valves on each radiator does not constitute separate zones. It is easy and good practice to enable manual room-by-room occupant control of temperature, though, which is why it is awarded 1 point. Applicable Internationally.