Why is my fridge noisy?
Humming or buzzing
Every fridge has a compressor, the motor that powers the cooling system. The compressor makes a humming or buzzing sound when it switches on. The compressor only turns itself on if the temperature in the fridge is higher than the set temperature. For energy saving models, it's normal for the compressor to keep runner longer. Do you have a lot of problems with it? By properly filling the fridge and not placing it next to a heat source, you can reduce the compressor start-up.
Nowadays, a lot of fridges have an anti-frost function, also called Low Frost or No Frost. These models have fan that causes the air to circulate inside the appliance. The fan produces a blowing or humming sound.
Bubbling or sloshing
The cooling system inside a fridge or freezer makes a bubbling, sloshing, and sometimes dripping sound. These sounds are caused by the the refrigerant that circulates through the pipes of the cooling system.
Cracking or ticking
A cracking or ticking sound is caused by the cooling system. The temperature changes cause metal to reduce and expand. The thermostat produces a short ticking or clicking sound when the compressor turns on and off.
Vibrating or rattling
Do you hear a vibrating or rattling sound? This is caused by the pipes of the cooling system at the back of the appliance. This sound is completely normal and means the fridge is still cooling properly. Is the vibrating sound suddenly louder than before? Check if the fridge is at spirit level or if something is touching the pipes at the back. This can significantly enhance the vibration noises.