Keep sth clean
First of all, we must ensure the cleanliness of the air conditioner inside and outside, and clean the filter regularly to avoid the air conditioner polluting the indoor air because it is too dirty;
The temperature difference between indoor and outdoor should not be too big.
Secondly, the indoor and outdoor temperature difference should not be adjusted too much. The indoor temperature is between 16-22 degrees in winter and 26-28 degrees in summer.
Avoid blowing people directly.
Air conditioning can't be blown directly at people. If the air conditioner blows at the bedside, you can buy an air conditioner deflector online to change the wind direction.