IDEAL House – New Zealand

Project Goals: Certified Passive House, Positive Energy & 8/10 Homestar design. Proudly supported by IDEAL Electrical Suppliers.

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NZGBA Open Home Event 2nd March

Our next open home will be hosted by the New Zealand German Business Association on Wednesday the 2nd of March, 3:50-6:30pm. You can either join the tour group in Auckland City and catch the ferry, or meet at the home. More details below, otherwise please email There will be a small cost which goes towards transport and refreshments.

We look forward to seeing you then!


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International Passive House Open Day / Dec Open Home

We are pleased to be opening up The Ideal House for it’s third International Open House day in November. The first year we did the presentation in the garage with just the framing up, last year was when we just moved in, and now after the home has been lived in for over a year. If you are not located in Auckland, have a look at the interactive map on the PHINZ website to see if there is another Passive House open home near you. Click here.

Date: Saturday 14th November

Time: 1-4pm. Guided tours at 1:15pm, 2:15pm, 3:15pm

Address: 23 Reliance Cres, Beachlands, Auckland


If you can’t make this date, our next general open home will be Sunday the 13th of December, 1-3pm, with guided tours at 1:15pm and 2:15pm. Please also RSVP to

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Open Home & Sensor Results

Our next public open home will be this Sunday the 11th of October, 1-3pm.

Tours starting at 1:15pm and 2:15pm. Please RSVP to

We will post additional dates for the next couple of months soon.

We have had our sensors up and running now for a couple of months, and it’s great to see the data for what we’re experiencing in the home. I’m amazed by the low humidity levels compared to outside, and the fact that our Zehnder balanced heat-exchange ventilation system takes care of additional moisture from the bathrooms without any additional (direct) extraction. Humidity primarily is sitting between 50-60% inside, and 70-90% outside.

Temperatures as you would expect are sitting primarily between 20 & 25 degrees C, with some variations when we’re away, or when we occasionally lit the fire over winter. Apart from that, there is no additional heating in the home. The garage is interesting (blue line), as it’s sitting nicely between inside (the thermal envelope) and outside – a good transition area.




Video & sensors

For those that cannot make it to Auckland for a house tour, we’ve created a 45 minute video running through the key aspects of the Ideal House. We hope this gives you some ideas for your own sustainable build project.

The open homes through winter have been extremely busy with plenty of visits from designers and people looking to build in the near future. We will have a break for a few weeks, and then will post new open dates for Spring.

We’re loving living in the Ideal House through our first full winter, and the home is just as warm, quiet and healthy as we had hoped. We have also just installed sensors throughout the house, which are being managed by Priscila Besen, student at The University of Auckland, supported by Paola Leardini. The sensors will monitor temperature, humidity, Co2, light (inside and outside) as well as some placed at the intake and exhaust vents of the Zehnder ventilation system. We also have sensors embedded either side of the Southern wall. The supplier in Italy is about to give us online access to all the data once they get back from holiday and we can’t wait to have this information.

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Expert Tour and Open Day

A presentation of the Ideal House is being given as part of The Expert Tour around New Zealand. So far Hamilton and North Shore Auckland have been completed, with loads of great feedback. For future venues for this free event, please refer

Our next open day will be Sunday the 24th of May, from 1-3pm. 23 Reliance Cres, Beachlands, Auckland.

Please RSVP to register your attendance at


Open day Sat 25th April 11am-1pm

We have had a range of tours and visits over the last couple of months from interested parties, and we will post more opening dates on the blog.

Next open day Saturday 25th April, 11am – 1pm.

Please write to to register your interest and for the address.

We’ve had our first cold snap of autumn, and the home is performing beautifully – continuing to hold up above 20 degrees C with no additional heating. We are looking forward to spending our first full winter in the home, and showing it off at a time when you can really experience the performance.