Passive solar heat gain / Guides

Passively-heated off-grid LEED house in Low, Quebec
Off-grid and Net-Zero Housing

Off-grid living blog: a firsthand account of building and living in a remote area

...heat ( called solar heat gain coefficient, SHGC ), whereas windows facing all other directions have a low SHGC. The difference between them is that the high-gain windows allow in approximately 50% of the sun's heat, whereas the low-SHGC windows let in only about 30%. This off grid home interior: Main fl...

Reflective window film to reduce overheating
Windows and doors

Product feature: window film treatment to reflect heat and lower air conditioning bills

...passive solar heat, so they are particularly advantageous for east and west-facing windows which contribute very little to solar heat gain in winter due to a lack of sun exposure, but they can contribute unwanted heat in the long days of the summer. Some better performing homes can even experience overheating during ...

Wood frame Triple-glazed, argon-filled windows in the Ecohome Demo House
Windows and doors

Choosing windows - which window frame? wood v aluminum v vinyl

...passive solar heat gain. Solar Heat Gain Coefficient (SHGC): The Solar Heat Gain Coefficient is a scale from 0 to 100 that indicates the amount of solar gain you will get through a pane of glass. The higher the number, the better the solar gain. Energy Rating (ER): After U-value, SHGC and the various designs an...

Canada's first LEED V4 Platinum certified home - The Edelweiss House
LEED Homes

Canada's first LEED V4 Platinum house - An EcoHome project checklist

...passive design of the house. “The primary heat source is the sun,” he said. “The majority of the heating requirement is met by the windows. Our primary heat source would be passive solar gain, by design .” The EcoHome Team even designed Edelweiss to make use of deciduous trees on the south facing side of the building...

Suspended-film insulating glass windows are high-performance windows
Windows and doors

Suspended-film insulating glass windows - A definitive guide for these high-performance windows

...solar heat gain on the north facade, so go with the highest R-value you can find, period. On the east and west facades, a combination of a high R-value and low solar heat gain coefficient [SHGC] is best to prevent overheating in summer, unless the windows are well-shaded from direct sunlight, in which case treat them a...

Solar panels power the Kenogami House in Saguenay, Quebec
Off-grid and Net-Zero Housing

The Kenogami House: Energy systems in Net Zero Energy Home Design

...heat source: a unique combination of passive solar heat gain, photovoltaic solar panels, a condensing boiler, heat pump and thermal battery. The ultimate goal during the design of this Net Zero Energy home was to eliminate the need for a supplementary heating system. The primary heat source is solar, stored in the he...

Ecohome's Kenogami House 'The Most Resilient Home in North America'
Concept and design

Resilient design features for new home construction

...solar panels (liquid) or air solar thermal panels or even air solar heated floor slabs can be powered by a small photovoltaic panel . Heated concrete floors are a great way to store and distribute heat over extended periods of time making the most of thermal mass acting like a heat battery . Heat pumps powered by pho...

Rendering of the Ecohome demonstration house
Efficient home design

Ecohome Demo House: High performance, affordable cost

...Passive solar heating Bedrooms, bathrooms and the mechanical room will be concentrated along the north side of the home, with living areas on the open space to the south. This configuration allows the exposed thermal mass of the concrete floor to work effectively with the solar gains from the abundant windows on th...

The birthplace of Passive House solar home design The Saskatchewan Conservation
Passive solar home design

Saskatchewan: The birthplace of Passive House and passive solar home design

...passive heating and cooling. It is exposed to the sun in winter and shaded in the summer. Image via nationalparks.org In reviving the ancient building technique of passive heating and cooling, the Saskatchewan Conservation House showed us what was possible in terms of solar heat collection and retention with mod...

Passive home designer Harold Orr, one of the original high performance homes
Passive solar home design

The principal designer of the house that inspired the global Passivhaus movement reflects on the project that started it all.

...solar gains in the winter months and a very low sun angle, the solar gain that we get from November to March is very small and this is the time we need the heat for our homes. So can you store heat from the summer to heat the house in the winter? The solar storage would have to be very large and very well-insulated. ...

Efficient green home design choices
Concept and design

Efficient home design, or how to design a home to use less energy

...passive heat gain . Energy efficiency, insulation and orientation: An efficient and resilient home is one that uses minimal energy to heat, light and run appliances. The biggest draw is *almost always heating , so reducing heat requirements is the best way to reduce operational costs. *We say almost always, but a...