Twizel Non-certified, eHaus Euro, PHI Low Energy


Designed by Jessica Eyres of Hiberna, this holiday house was built as a base for its owners to explore the outdoors with their young family. They wanted something minimal, industrial, and inspired by the South Island high country huts, great connection to the outdoors, plenty of storage and overflow sleeping space for family and friends. The brief also needed to consider hard-wearing durable finishes, a big mud room for wet and muddy gear and a warm comfortable efficient space. Jessica worked with eHaus to design and build this simple, yet beautiful home set in the breathe taking backdrop in Twizel. This energy efficient house has outstanding performance with feedback from guests "it was snowing and cold and we didn't even need to light the fire" This home has featured on the front cover of the international Passive House Plus Magazine and also New Zealand House and Garden November 2017 edition.

Extraordinary heat energy savings.

Every one of our projects are energy modelled using the Passive House Planning Package (PHPP). It's through this powerfully clever tool that we can accurately calculate just how much heat energy every eHaus will save when compared to a similarly- sized typical new home, built in the same climate region.

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This project is making significant carbon savings for a better environment.

We believe that our homes should have a big impact on the way we live, but little impact on the land. We've calculated the amount of carbon our homes have saved through energy efficiency from move in day 'til now. At their core, eHaus' are built with the elimination of carbon emissions in mind - so we're not only creating healthy, comfy & high performing homes, but spaces that don't cost the earth.

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Meet the team of designers and builders behind this project

Our eHaus team is made up of some of the country's best Passive House builders, architects and designers who are redefining the way kiwis live one home at a time. Our team of professionals work together to see your dreams come to reality.
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Design Components

Fully insulated concrete pad with a U-value of 0.240 W/(m²K)
SIP construction with insulated service cavity U-value of 0.213 W/(m²K)
SIP construction with insulated service cavity U-value of 0.154 W/(m²K)
Window Joinery Frame
ThermaDura NatureLine Wood Uf value 1.11 W/(m²K)
Triple Glazed Low E Argon Ug value 0.53 W/(m²K) G Value 50%
Zehnder Comfo Air 350 MHRV
Hot Water
Rinnai hotwater heat pump split system with internal 300 litre water storage.
Bionic wood burner with ultra low emission down draught burner

Performance Specs

Heating Demand: 19.0 kWh/m²/yr
Heating Load: 12.0W/m²
Frequency of Overheating: 1%
TFA: 149.6 m²
Form Factor: 3.2
Air Leakage@50Pa: 0.46 ACH
PER Demand: 51 kWh/m²/yr


eHaus - Jon Iliffe



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