Hot food will increase the temperature in the refrigerator so that the power consumption will increase. So, cool the hot food before putting it into the refrigerator is necessary.
In order to avoid the leakage of air conditioning, reduce the times of opening refrigerator door.
Don't open the refrigerator for too long. The longer the open time, the more electric energy used to replenish the air-conditioning.
Once the ice layer on the inner surface is formed, it should be defrosted as soon as possible, otherwise the frost layer will thicken, which will affect the cooling effect.
The temperature setting should be adjusted according to the actual temperature of food and try to avoid the lower temperature setting, which will cause unnecessary energy waste.