The files are available all in one file from this link: AllNewNZClimatesPostPHPPv9.6 This file has the data in cut-n-paste format for the following regions:
- Northland (NL) – Kaitaia
- West Coast (WC) – Hokitika
- Otago Central (OC) – Lauder
- Invercargill (IN) – Invercargill
- Chatham Islands (CI) – Waitangi
- Christchurch – reprocessed
You are required to use the certified files unless your PHI certifier has directed you otherwise.
The thermal comfort temperature is used in PHPP to estimate if the window and associated thermal bridging meets the thermal comfort requirements of Passive House Certification. The temperature in PHPPv9.6a for Christchurch NZ0003a is incorrect. The corrected value is -3° C and should be entered into the windows sheet of PHPP. Your certifier should notify you of this but if they forget please remind them.
These zones and the hourly data files used by PHI to produce the certified climate files were developed by NIWA except for the Chatham Island zone and file.
The technical paper discussing the development of these climate files and some of their limitations can be downloaded by selecting the link below – note this is now out of date:
Affordable Certified Climate Files – Process Used in New Zealand
This paper was presented at the 2015 South Pacific Passive House Conference.
2015 Conference Presentation
This pdf file is of the slides presented at the 2015 South Pacific Passive House Conference.