Abstract: A condensate collection tank (1) for an air conditioning system is provided. The tank (1) comprises a body (20) for storing condensate liquid, a lid (10) releasably connectable to the body (20) to form the tank (1) and a mounting bracket (112) for fixing the lid (10) to a mounting surface. The tank (1) further includes an inlet port (50, 90) for condensate liquid from the air conditioning system, an outlet port (40, 80) for condensate liquid from the tank (1), a sensor (104) for determining whether an amount of condensate liquid in the tank (1) exceeds a threshold value, and a controller for controlling removal of the condensate liquid from the tank (1) via the outlet port (40, 80) when the sensor (104) determines that the threshold value has been exceeded.