1 year. According to national regulations, the warranty period of air conditioner is 1 year, and the warranty period of main components such as compressor, thermostat and fan motor is 3 years. The warranty period of each brand promise can be higher than the national standard, but the promise must be fulfilled. If the merchant's regulations are lower than this standard, it will infringe on the rights and interests of consumers. If something goes wrong during the warranty period, it can be sent to the local maintenance point for repair. Precautions for the use of air conditioners Too much dust in the outdoor radiator of air conditioners will reduce efficiency, so the outdoor radiator should be inspected and cleaned regularly (it can be blown clean with compressed air after power failure). The outdoor unit of split air conditioner can't insert a stick, otherwise it will jam the fan or damage it. When you feel that the air conditioner is not ideal, you should consult the instruction manual, analyze whether it is caused by improper use, and correct it after finding out the reason. If the fault cannot be solved by itself, you can find a professional maintenance technician in the original installation department to solve it, or contact the local service personnel of the brand company. You can't fix it yourself or find a non-professional to fix it.