Before installing electric thermal storage type water heater, consumer should apply to the Water Authority for approval. Application should include plumbing arrangement of the installation together with the details of the water heater.

Safety aspects of unvented electric thermal storage type water heater shall conform to the requirements of the Electrical Products (Saftey) Regulation, Chapter 46. Installation shall be carried out by a licensed plumber / electrical worker. Names of the licensed plumbers are available at our Customer Enquiry Centres for reference.

The safe functioning of an unvented water heater relies much on the correct installation of the safety devices and their proper maintenance. You are advised not to modify or tamper with the safety devices of the unvented water heater, and to engage qualified plumbers or electrical workers to conduct maintenance checks at least once a year.