Passive House Duplex, Vancouver
This 3 bedroom and 2 bathroom (each) plus one basement suite Duplex building is the first multifamily Passive House in Vancouver. Constructed on a lot in East Vancouver, the building was designed by Marken Design and Consulting and built by Econ Group over the span of one year. The basement suite is handicap accessible.
The architectural theme was kept traditional aiming to blend well into the neighborhood character, as required by the Vancouver bylaw for this area.
For the owners the main goal was to create a healthy and very comfortable space to live in for their family and their grandmother generating a lasting legacy.
Using standard, cost-efficient 2×6 wood construction with exterior insulation applied using eco-friendly insulation throughout, the builder was able to achieve a 0.3 ACH on the final blower door test and meet the international Passive House Standard. The house is now occupied since late summer 2016 and is currently undergoing final certification review.
Also, for this project an array of photovoltaic panels will be installed on the south-facing garage roof to produce electricity all year round cutting the utility costs to almost zero (Net Zero Energy).
Vancouver’s new building bylaws now require increased energy efficiency; this project aims to demonstrate how to exceed these goals and add value for the same construction costs as a standard custom home.
Annual Heating Cost
$286 / yr*
* For both units, total demand is 2800 kWh per year at 10.2 cents/kWh, no night setback
See Building Performance Data
|Gross Floor area||2400 ft2|
|Treated Floor Area (PHPP)||216 m2|
|Annual Heating demand||2800 kWh|
|Specific Annual Heating Demand||13 kWh/m2|
|Design Heating Load||2100 Watts|
|Specific Heating Load||10 W/m2|
|Heating Fuel Cost||$0.102 /kWh|
|Annual Heating cost calculation||$285 / yr (2 units)|
|Annual cooling demand||0 kWh|
|Annual cooling cost||$0 / year|
|Airtightness (calculation assumption)||0.3 ach @ 50 Pa|
See Construction Details
|Component||Construction Type & Specs||U-value (R-value)||Manufacturer, Location|
|Floor slab||Concrete slab insulated with EPS||0.109 W/m2K (R- 52)||Econ Group|
|Wall structure below grade||Basement - Insulated concrete forms||0.144 W/m2K (R-39)||Logix ICF|
|Wall structure above grade||2x4 Stud wall with Exterior Insulation||0.147 W/m2K (R-41)||Econ Group|
|Roof structure||TJI Roof Structure + 2x4 Ceiling service structure||0.075 W/m2K (R-75)||Econ Group|
|Wall Insulation - type, thickness||Roxul Comfoboard and Roxul Comfobatt - 8.5 inches||Roxul|
|Roof Insulation - type, thickness||Roxul Comfobatt - Total 18 inches||Roxul|
|Windows||Euroline THERM 4700||Euroline|
|Exterior Door||Euroline THERM 4700||Euroline|
|Window Frame spec and U-value||Vinyl/Fibreglass Hybrid||Uf = 0.80 W/m2K|
|Window Glazing spec and U-value||Cardinal Triple Glaze||Ug = 0.63 W/m2K|
|Glazing SHGC (g-value)||solar heat gain coefficient ( g-value)||55%|
|Airtightness||assumed value for modeling||0.3 ach @ 50 Pa|
|Ventilation system||Zehnder Comfoair 350||90% efficiency||Zehnder|
|Hot Water||Air-to-Water Heat Pump Hot Water||COP 3.0||Rheem|
|Heating System||Electric Resistance Mini Baseboard heaters|
See Design & Construction Team
|Architect||Marken Design + Consulting||Vancouverfirstname.lastname@example.org|
|Passive House Designer||Marken Design + Consulting||Vancouveremail@example.com|
|General Contractor||Econ Group||Vancouver||http://www.econgroup.ca|
|Building Envelope Supplier||Econ Group||Vancouver||http://www.econgroup.ca|
|PHI-Accredited Certifier||EZA||Kempten, Germany|