Thermoelectric car refrigerators, sometimes referred to as Peltier refrigerators, use the Peltier effect for cooling. This type of refrigerator is generally cheaper and quieter than compressor or absorption refrigerators. They can run on both 12 volt and 230 volt power, making them flexible for use in the car or at home. The main disadvantage is that their cooling performance is strongly influenced by the ambient temperature and they generally do not reach as low temperatures as other types of refrigerators.