How long has it been since you pulled your refrigerator out of its space and cleaned the condenser coil on the back of it? If your refrigerator isn't working as well as it should, it's probably time to get those coils clean. Here are some tips to clean it before you need to call for refrigerator repair.
Why do dirty condenser coils cause refrigeration problems?
The function of the condenser coil is to provide the unit with a way to release heat that is formed during the cooling process.