1. The car steamer needs cleaning. The steamer has been used for a long time, and a lot of dust and bacteria have accumulated in the air duct. When the air conditioner is turned on, there will be a musty smell in the car.

2. The evaporation box of air conditioner should be cleaned once a year according to the situation: the evaporation box can be cleaned visually without disassembly. Look at a service station or repair shop with an endoscope. Dirty or not, dirty or not. General prices range from 180-300 yuan. The cost of pure materials for regular three-in-one cleaning is 100 yuan, plus water, electricity, rent, labor and other expenses. I don't know if it's mine, but my lungs are mine. No matter which cleaning method is adopted, the ultimate goal is to improve the air inside the car and prevent the lungs from becoming the filter screen of the air conditioner, so it is very necessary to clean and maintain the air conditioner.

3. Cleaning the evaporation box is conducive to improving the working efficiency and refrigeration effect of the air conditioner, which is equivalent to saving the fuel consumption of the car. When cleaning the evaporation box, acid substances should be avoided, and water mist of weakly alkaline solution should be used as much as possible to prevent excessive oxidation corrosion of the heat exchanger.