1. New Zealand Energy Data File 2008 Calendar Year Edition;Dang,2009
2. HEEPs of domestic hot water, BRANZ Ltd Judgeford Porirua;Isaacs;Build Journal,2007
3. Energy Efficiency (Energy Using Products) Regulations 2002;New Zealand Government,2008
4. Heat Pump Water Heaters. Consumer NZ;Whitley,2009
5. Standards Australia/Standards New Zealand, Joint Australian and New Zealand Standard AS/NZS 4234 Appendix H – Air Source Heat Pump Water Heater Task Performance Evaluation (Draft), Sydney/Wellington, 2008.