Ottawa Passive House - Grey ResidenceThe Grey Passive House is located about 25 mins. from downtown Ottawa, on a well oriented, 90% unshaded lot in the Rideau Forest Estates. Casey Grey, of Cornelis Grey construction, is the owner/builder of Ottawa’s newest Certified Passive House. Stretched over three floors, including a walk-out basement/office, the building’s east-west axis is able to take full advantage of the high solar gains through the Thermotech windows.

Passive House challenges included the room above the garage, a 2-storey living room and entry, and the walk-out basement, which pushed the project towards higher thermal efficiencies.The deep 6’ wrap around porch not only extends the living space with the flare of a country residence, but also reduces the potential of overheating.

STANDARD Passive House
LOCATION Ottawa, ON
TYPE Detached Single Family
YEAR COMPLETED 2014
PROJECT TEAM
PH CONSULTANT Stephen Magneron (Homesol Building Solutions)
smagneron@homesol.ca
 DESIGNER Chris Straka (Vert Design)
chris@vertdesign.cawww.vertdesign.ca
 BUILDER Casey Grey (Cornelis Grey Construction)
casey@cgreyconstruction.comwww.cgreyconstruction.com
 
LIVING AREA 3,810 ft²
HEAT DEMAND 14.5 kWH/(m².a)
HEATING LOAD 15,000 BTU/hr
COOLING DEMAND 7.22 kWh/(m².a)
PRIMARY ENERGY 86 kWh/(m².a)
AIR TIGHTNESS 0.54 ACH
VOLUME 34,220 ft³
SLAB Concrete/XPS R-31
ABOVE GRADE WALLS Dbl Wood studs Roxul R-70
BELOW GRADE WALLS Concrete/XPS/Roxul R-47
CEILING Wood truss/Cellulose R-83
VENTILATION Air Pohoda Ultima240E Eff. 94%
WINDOWS Thermotech Fibreglass
  North, East, West SHGC = 0.33 Ug = 0.68 W/(m²K)
  South SHGC = 0.64 Ug = 0.61 W/(m²K)
 
HEATING/COOLING Mitsubishi Mr Slim – 3 indoor heads
HOT WATER A.O. Smith 300L Air Source Heat Pump Water Heater
RENEWABLES 10 kW PV