Please note: The class action lawsuits against LG for linear compressor failures beginning in 2018 have resulted in some negative reactions to LG and the linear compressor, which we will respond to below.
LG has something unique to offer refrigerator buyers: the linear compressor. The compressor is an important piece to the system that moves warm air out of your refrigerator. It's more or less a "pump" designed for vapor rather than water, pushing the warm refrigerant vapor to the coils on the back of your refrigerator so the vapor can cool off and be cycled through your refrigerator again. You can think of this as your refrigerator removing warm air rather than "adding" coolness to the air.