What makes a home a Passive House?

What is the Passive House standard?

The standard began in Germany, where it is known as Passivhaus, and has since spread worldwide, including to Canadian projects from single-family homes to large buildings. It sets performance limits instead of prescribing exact materials. These include a low annual heating demand, a low peak heating load, a tight limit on air leakage tested with a blower door and a cap on the building's total primary energy use. The exact numbers and the climate adjustments change with versions, so check the current criteria with the certifying body before design begins.

What features do these houses share?

• Thick, continuous insulation. Walls, roof and slab are insulated far beyond code, with careful attention to thermal bridging.
• Airtightness. A very low leakage rate confirmed by a test, see blower door test results.
• High-performance windows. Often triple glazing with insulated frames, as in high performance glazing.
• Heat recovery ventilation. Fresh air with little heat loss, see the HRV guide.
• Passive solar design. Compact shape and well-placed south glass, with shading, in line with the passive solar design guide.

How does it differ from R-2000 and net zero?

The labels measure different things. R-2000 is a Canadian standard with prescribed technical requirements and testing, covered in the R-2000 explainer. Net zero looks at annual energy balance, with on-site generation making up the use, as described in the net zero home guide. Passive House is a demand-first approach: cut the heating need until a very small system is enough. The three can overlap, and a Passive House can also be net zero with solar panels.

Is Passive House practical in a Canadian climate?

Yes, projects exist across the country, and cold winters are where very low heating demand pays most. The challenges are cost and design discipline: thicker walls, better windows and meticulous airtightness add expense, and builders need training. Reported costs vary by project and region, so ask for quotes and compare them with the running savings over the life of the house. Small heating systems, such as a compact heat pump, are enough in such houses, which is why the standard pairs well with cold-climate heat pumps.

What does Drake Landing add to the picture?

The same idea of cutting demand first underlies the Drake Landing homes. Their R-2000 envelopes let a modest solar loop and seasonal heat store supply most of the space heating, as laid out in how it works. A Passive House would need even less heat, which would shrink or simplify such a system. For an existing house, you do not need certification to use the lessons: start with air sealing, attic and basement insulation, then windows, following the upgrade priorities guide. Programs for high-performance buildings change, so check the Government of Canada energy-efficiency pages, your province and your utility.

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