Port Perry House,
Port Perry, Ontario, Canada
e architect likens the house to an eﬃ cient
machine that conserves resources. Although
this residence relies primarily on passive
technologies, its eﬃ ciency is such that it
requires no furnace and thus avoids burning
fossil fuels. Instead, the building envelope
and structure provide interior conditioning
suited to both winter and summer tempera-
tures. Two levels of green roofs (the upper
is hidden by the angle of view) absorb solar
radiation so that the interior remains cool
in summer. Rainwater is also absorbed to
prevent excess runoﬀ into Chalk Lake below.
In addition, a bioﬁ lter system on site treats
Above e large south-facing curtain wall
forms the main aperture for admitting solar
radiation. Compact and cubic in form, the 28
× 28-foot (8.5 × 8.5-meter) house is simple
to heat and ventilate. Vines will be grown up
the walls to shade the house in summer and
deﬂ ect wind in winter.
Left e stairwell serves as a solar chimney,
which ventilates the house as the updraft
of warm air draws cool air in at the bottom.
R40 insulation is maintained on the roofs.
e open plan and section promote air
circulation—in fact, the only separate room
is a toilet enclosure. Solar hot water panels
were installed on the upper roof instead of
the window wall as originally planned due to
partial shading from tall trees.
Alternative Energy Sources