The US Market Thermomix® is 110v only. The Thermomix® has not been certified, designed nor tested for use with converters. While in theory, a converter may work, Thermomix® US cannot recommend nor support the use of a 220V Thermomix® in the US. If a customer chooses to use a converter with a 220V Thermomix®, customers should know there is a risk and the warranty may be voided. Also, service for the US version Thermomix® might not be available in the non-US country.