Whanganui – Roxborough

eHaus Euro - Certified Passive House Classic It’s remarkable how much fits inside this two-story 151 m2 home for an extended and expanding family. The clients wanted a functional and compact home, a place that was both dignified and comfortable. It also includes a self-contained flat, gym, library and 3.5 bathrooms “Without a doubt the most comfortable house we’ve ever lived in, year-round and without having to burn power to make it that way, which is awesome”   Design Components Floor: Fully insulated concrete pad with a U-value of 0.238 W/(m²K) Wall: ecoBlock ICF wall  U-value of 0.096 W/(m²K) Roof: Double layer of fibreglass insulation U-value of 0.205 W/(m²K) Window Joinery Frame: Hilzinger, KBE Prestige Upvc Uf value 1.53 W/(m²K) Glazing: Double Glazed Low E Argon Ug value 1.10 W/(m²K) G Value 62% Ventilation: Zehnder Comfo Air 350 MHRV Hot Water: Flat plate solar system with internal 300 litre water storage Heating/Cooling: Inline heating element incorporated into ventilation system and controlled by comfo ease panel Power generation: 5 kW Solar PV system Ecological features: 2 x 22,500 litre water harvesting system. Natural flow black and grey water treatment system with composting. Clothes drying cupboard integrated into the ventilation system   Performance Specifications Floor Area: 151 m² Heating demand: 11.0 kWh/m²/yr this compares to minimum compliance 6 Star house at approx. 50 kWh/m²/yr  Heating Load: 10 W/m² Frequency of Overheating: 0% year over 25°C TFA: 151.3 m² Form Factor: 3.06 Air Leakage@50Pa: 0.6 ACH PE demand: 100kWh/m²/yr