In by Jon Iliffe


eHaus Euro - PHI Low Energy Standard - Non Certified

Designed by Jessica Eyres of Hiberna, this holiday house was build 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.

Design Components

Floor – Fully insulated concrete pad with a U-value of 0.240 W/(m²K)

Wall – SIP construction with insulated service cavity U-value of 0.213 W/(m²K)

Roof – 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)

Glazing – Triple Glazed Low E Argon Ug value 0.53 W/(m²K) G Value 50%

Ventilation – Zehnder Comfo Air 350 MHRV

Hot Water – Rinnai hotwater heat pump split system with internal 300 litre water storage.

Heating – Bionic wood burner with ultra low emission down draught burner

Performance Specifications

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

Experience this eHaus for yourself

Contact eHaus

Passive House Project Team


Hiberna Building & eHaus designHaus


Hiberna Building & eHaus


eHaus - Jon Iliffe