How often does Peugeot 207' s air conditioning filter change?

The air-conditioning filter element marked with 207 shall be replaced at 1 year or1.5000 km. When the car is driving with the air conditioner on, it is necessary to suck the outside air into the compartment, but the air contains many different particles, such as dust, pollen and soot. If there is no air conditioning filter, once these particles enter the compartment, they will not only pollute the automobile air conditioner, but also reduce the performance of the cooling system, and inhalation of dust and harmful gases will cause harm to the human body. Peugeot 207 has two engine models, 1.4L adopts inline four-cylinder, ETEC intelligent and efficient electronic control engine and multi-point sequential injection electronic throttle; 1.6L electronic throttle driven by 16 valve multi-point sequential injection and double overhead camshaft clearance automatic compensation.