Single Family Passive House, Mont-Tremblant, Québec

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Project Overview

This project was specifically designed to meet the highest comfort levels possible. The contemporary classic design integrates beautifully into the surrounding rock mountainside, and the interior layout complements the active lifestyle of the owners, including space for a music studio and video editing workshop.

The highly insulated envelope uses conventional construction materials, combined with careful building methods and detailing, and has achieved an incredibly low airtightness level of 0.16 ACH @50pa.  Landmark Passivhaus added an earth tube to preheat incoming fresh air in the winter, and combined it with the Minotair 12000 to provide unsurpassed indoor air quality year-round. Comfort, comfort, comfort, and an annual heating demand of just 1793 kWh!  The house has 3 bedrooms, 2 baths and had a building cost of $167.00 per sqft.

“Change the build / Build the change”.

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Annual Heating Cost

$152 / yr*

* 1793 kWh per year at 8.5 cents/kWh Hydro Québec residential rate, with no night setback

See Building Performance Data

Building Energy Performance Data (via PHPP modeling)
Gross Floor Area 1800 ft2
Treated Floor Area (TFA) 152 m2
Specific Annual Heating Demand 11.8 kWh/m2
Annual Heating demand 1793 kWh / year
Annual Heating cost $152 / year - electricity
Design Heating Load 2000 Watts
Specific Heating Load 13.2 W/m2
Target Airtightness 0.6 ach @ 50 Pa
Airtightness achieved 0.19 ach @ 50 Pa
Annual cooling cost zero

See Construction Details

Construction Specs Construction Type U-value (R-value) Manufacturer, Location
Floor slab Superinsulated EPS tray slab 0.096 W/m2K (R-59)
Wall structure 2x4 studs @ 24" o.c., 13mm OSB, TJI w/cavity 0.085 W/m2K (R-66) site built
Roof structure truss with blown cellulose insulation 0.05 W/m2K (R-113)
Wall Insulation mineral wool/cellulose 0.085 W/m2K (R-66)
Roof Insulation blown cellulose 0.05 W/m2K (R-113)
Windows Passiv Passive House Certified Klearwall, Ireland
Window Frame uPVC Uf = 0.79 W/m2K Klearwall, Ireland
Window Glazing Triple 2 x low-e 0.6 W/m2K Saint Gobain
Glazing SHGC (g-value) Solar heat gain coefficient 0.52
Airtightness goal : 0.5 ach @ 50 Pa
Ventilation system Minotaur 1200
Ventilation preheat custom earth tube
Heating System

See Design & Construction Team

Role Person Location Email
Architect Jim Iredale / Landmark Passivhaus Mont-Tremblant, Québec jim@landmarkpassivhaus.com
Entrepreneur / General Contractor Jim Iredale / Landmark Passivhaus Mont-Tremblant, Québec
Passive House Designer Jim Iredale / Landmark Passivhaus Mont-Tremblant, Québec
Building Envelope Supplier site fabricated by Landmark
PHI-Accredited Certifier CertiPHIers Collective Portland Oregon USA tad@certiPHIers.com