Laboratory refrigerator

A laboratory refrigerator is a common laboratory appliance that consists of a thermally insulated compartment and a heat pump (mechanical, electronic, or chemical) which transfers heat from the inside of the unit to its external environment so that the inside is cooled to a temperature below the ambient temperature of the room.

Laboratory freezer

A laboratory freezer is specifically designed piece of laboratory equipment that has a thermally insulated compartment and a heat pump (mechanical, electronic, or chemical) which transfers heat from the inside of the device to its external environment so that the inside of the freezer is cooled to a temperature below the freezing point of water (at a minimum) or much below it, depending on the substance being frozen.