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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.

This minimalist industrial-inspired home, reminiscent of South Island high country huts, offers a seamless connection to the outdoors and ample storage. Featuring one bathroom, separate toilet and two spacious bedrooms, with an additional snug or single bedroom and a mudroom, it caters to the owners’ desire for practicality and comfort.

With a ground floor area of 119m2 plus a 25m2 mezzanine with storage, this home maximizes space efficiency. The brief emphasised hard-wearing, durable finishes, resulting in a warm, comfortable, and energy-efficient space. Clad in cedar vertical board and batten and corrugated steel, with wood joinery and triple glazing, this home is not only simple but also beautiful. Guests have praised its outstanding performance, even in cold weather, with no 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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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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