CONTROLLING A HVAC SYSTEM OF A VEHICLE

The invention provides a control system () for controlling a heating, ventilation and air conditioning (HVAC) system of a vehicle (). The control system () receives a cleaning cycle request () indicating a requested time to initiate a cleaning cycle performed by the HVAC system, the cleaning cycle being for reducing a level of one or more pollutants in a cabin () of the vehicle (). The control system () determines, at the requested time, whether certain conditions are satisfied, including a condition that the vehicle () is not currently undertaking a vehicle journey. The control system () transmits a control signal () to control the HVAC system to initiate the cleaning cycle if it is determined that the conditions are satisfied.