​This part of IEC 60335 deals with the safety of electric heat pumps, including sanitary hot water heat pumps, air-conditioners, and dehumidifiers incorporating motor-compressors and hydronic room fan coils, their maximum rated voltages being not more than 250 V for single phase appliances and 600 V for all other appliances to supersede AS/NZS 60335.2.40:2006 on 30 November 2020. During this period it is anticipated that regulatory authorities will approve electrical heat pumps, air-conditioners and dehumidifiers to either standard.