Green Star FAQs


FAQ F-00538
How can a multi-pass heat pump demonstrate compliance with the COP for Domestic Hot Water compliance?

Where a multi-pass heat pump is used for domestic hot water and thereby COP varies across successive heating stages, projects may use the COP at 20°C ambient and 45°C leaving water temperature to demonstrate a minimum COP of 3.0 in accordance with the Domestic Hot Water Generation criteria under Energy Use - Residential Pathway.





Rating Tools

This FAQ is related to the following Rating Tools, Categories or Credits:

  • Green Star Buildings v1 / Positive / 22 Energy Use
  • Green Star Buildings v1.0 / Positive / 22 Energy Use
  • Green Star Buildings v1.1 / Positive / 23 Energy Use


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