Saskatchewan Conservation House

The Saskatchewan Conservation House (211 Rink Ave, Regina, Saskatchewan, Canada) is an early exemplar of energy-efficient building construction that introduced best practices for addressing air leakage in houses. It was designed in response to the energy crisis of the 1970s at the request of the Government of Saskatchewan. The Saskatchewan Conservation House pioneered the use of superinsulation and airtightness in passive design and included one of the earliest heat recovery systems. The house did not require a furnace, despite prairie winter temperatures as low as −24 °C (−11 °F) at night.

In 1977, when it was built at 211 Rink Avenue in the Walsh Acres neighborhood of Regina, Saskatchewan, Canada, the house was the world's most airtight house. The cost of the electricity to heat the house was estimated as $30–40 for a year. The house's building envelope continues to perform as designed, more than 40 years later.

For its first two years, the Saskatchewan Conservation House could be viewed by the public as a model house. In 1978 as many as 1,000 visitors a week visited it. The Saskatchewan Conservation House influenced the development of energy efficiency building codes both in Canada and internationally. It shaped the field of energy-efficient construction, including passive solar building design and the German passive house. In April 2015, Germany's Passive House Institute gave its designers a Pioneer Award for the design and construction of the house.