Mandatory Implementation of Philippine National Standards for Household and Similar Electrical Appliances, (1) PNS IEC 335-2-24:2001 - Safety of household and similar appliances Part 2-24: Particular requirements for refrigerating appliances, ice-cream and ice-makers, with Amd. 1:2003 and (2) PNS IEC 335-2-40:2000 - Safety of household and similar appliances Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers