Yes, it is normal for a freezer compressor to become hot during its operation. The compressor is an essential component of a freezer, and it works by compressing refrigerant gas, which in turn helps maintain the low temperatures required for freezing and preserving food.
During the compression process, the refrigerant gas gets heated, and the compressor's function is to raise the pressure of the gas, causing it to release heat. This heat is expelled through the compressor's metal casing, which can make the compressor feel hot to the touch.
However, if you notice that the compressor is excessively hot or that it is producing an unusual amount of heat, it could indicate a problem. Several factors, such as poor ventilation, a malfunctioning compressor motor, or a refrigerant leak, can contribute to excessive heat buildup. In such cases, it is advisable to have a professional technician inspect and service the freezer to ensure it operates safely and efficiently.