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This website calculates compliance with insulation targets of NZBC, Clause H1 as of 10 October 2011. It calculates compliance with the New Zealand Standard NZS4218:2004, Schedule and Calculation Methods, using the R-value targets from NZBC/H1 (October 2011) and for compliance with the Building Performance Index (BPI).
The Calculator should be used in conjunction with the Energy Efficiency Clause H1 of the New Zealand Building Code and NZS4218:2004, which can be purchased from Standards New Zealand.
Dear Design Navigator user
After more than 6 years of providing this tool free of charge I have decided to charge a small fee for the H1 Compliance Reports. My own circumstances have recently changed and the fee will allow me to spend more time working on the tool.
You can continue to create as many projects as you want for free. The fee will only apply once you download a completed H1 report and is currently $26.40+GST. Payment can be made via credit card or via cheque or bank transfer on invoice.
I appreciate that this will add an additional cost to your business, but hope that the quality of the tool and support that I provide will make the cost acceptable.
Please let me know if you have any questions or have suggestions to improve the Design Navigator website: email@example.com.
For frequent users I am able to set up discounts. Please contact me if you would like to discuss this.
PS: Since announcing the price introduction I had many e-mails of support. Thanks very much!
Some FAQ's regarding the new fee system
Do you know...?
How to create H1 reports for additions and alterations
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The easiest way to show compliance for additions and alterations is to show compliance for the whole building rather than only for the changed parts. That means you enter all external floors, walls, roofs and windows whether they are existing or new.
The trick is that for all existing unchanged parts you can assume that they apply with the Schedule Method R-value targets (Replacement Table 1 in NZBC H1), irrespective of whether they in reality do. So you would for example enter for all existing windows an R-value of R-0.26, even if they are single glazed.
If the R-values of the existing parts are known and higher than the Schedule Method R-values then you can even use these R-values.
Only for the new and changed parts of the building you use the actually proposed R-values for these elements.
Any walls or other elements that used to be external, but are now internal elements will be ignored as usual.
This method follows the approach in NZS4218:2009 Appendix D3. Note that this version of the Standard is not an Acceptable Solution (that is still NZS4218:2004), but most BCAs will accept this approach since there is no alternative method recommended in NZS4218:2004.
There is also a message trail on the issue on the DesNav message board.
The H1 Replacement Table 1 R-values are:
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No. Once you have paid for a report you can make as many changes to the project and download a new copy of the report free of charge.
Just be aware that if you create a copy of the project you would have to pay again for the report of the copied project.
No. Reports for projects that were created before the 19th of February 2015 remain free of charge.
The payment system is set up so that when you open the report page you have two choices, either pay by credit card or be invoiced.
If you select credit card it redirects to a separate ASB website where you do all the credit card stuff. Once that is done it returns to the DesNav page and e-mails you the report and a receipt.
If you choose the invoice option the DesNav website will send you the H1 report and together with it an invoice.
In the next few months I am also going to set up a system that would collate the invoices during each month and then send a monthly invoice.
I hope is convenient to you.