Compressed air station comprising at least two compressed air components that yield waste heat, wherein each compressed air component is designed either as a compressor, in particular as a screw compressor, or as a refrigeration dryer , and at least one exhaust air duct for discharging waste heat from a room, wherein at least one of the compressed air components, namely a refrigeration dryer, is connected to the exhaust air duct , and wherein a further compressed air component is connected to the same exhaust air duct , wherein a compressed air refrigeration heat exchanger is provided within the refrigeration dryer , in which the compressed air is cooled by way of a refrigerant conducted in a refrigerant circuit , wherein the refrigerant circuit comprises a refrigerant compressor , a condenser , an expansion valve and the compressed air refrigeration heat exchanger , wherein the compressed air station further comprises a dryer exhaust air duct , which is provided for discharging from the refrigeration dryer a cooling air flow that is conducted through the refrigeration dryer , and which connects a cooling air outlet of the refrigeration dryer to a refrigeration dryer connection on the exhaust air duct , wherein the refrigeration dryer has a fan with a speed-adjustable fan motor , and the fan is designed to convey the cooling air flow even against a backpressure currently prevailing in the exhaust air duct , and wherein the refrigeration dryer has a controller or interacts with a controller, which is configured and designed to actuate the speed-adjustable fan motor of the fan in such a way that the fan compensates for the backpressure prevailing in the exhaust air duct , so that a volume transported by the cooling air flow per unit of time remains unchanged. wherein at least one of the compressed air components, namely a refrigeration dryer, is connected to the exhaust air duct , and wherein a further compressed air component is connected to the same exhaust air duct , wherein a compressed air refrigeration heat exchanger is provided within the refrigeration dryer , in which the compressed air is cooled by way of a refrigerant conducted in a refrigerant circuit , wherein the refrigerant circuit comprises a refrigerant compressor , a condenser , an expansion valve and the compressed air refrigeration heat exchanger , wherein the compressed air station further comprises a dryer exhaust air duct , which is provided for discharging from the refrigeration dryer a cooling air flow that is conducted through the refrigeration dryer , and which connects a cooling air outlet of the refrigeration dryer to a refrigeration dryer connection on the exhaust air duct , wherein the refrigeration dryer has a fan with a speed-adjustable fan motor , and the fan is designed to convey the cooling air flow even against a backpressure currently prevailing in the exhaust air duct , and wherein the refrigeration dryer has a controller or interacts with a controller, which is configured and designed to actuate the speed-adjustable fan motor of the fan in such a way that the fan compensates for the backpressure prevailing in the exhaust air duct , so that a volume transported by the cooling air flow per unit of time remains unchanged. <EOS>