Passive heat / Guides

Mixed interior room lighting

Home lighting design

...heating a tungsten filament. Of the energy they consume, 80% is converted into heat, while only 20% is converted into light. Compare that to LED’s which are 80% efficient, meaning they convert 80% of energy into light, and only 20% into heat. In winter months that heat is as valuable as heat generated from any other ...

Beautiful LEED home in Mulmur, Ontario.
LEED Homes

A beautiful lakeside LEED Platinum home

...heat-mirror triple glazing, solar shading, passive ventilation and daylighting, and a geothermal system are just some of the features of this LEED Gold-targeted project. LEED home in Mulmur, Ontario.© Shai Gil Photography LEED home in Mulmur, Ontario. © Shai Gil Photography ...

Transparent solar power producing windows
Renewable energy

transparent solar panels

...heat in the winter rather than hold it. And they're no better in the summer, they require huge amounts of energy to cool them down while the sun beams in and slow cooks the occupants. Glass curtain walls leave us at the mercy of outdoor temperatures, endlessly pumping our money and energy into heating and cooling to ...

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.

...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. As a committee we examined these problems and came to the conclusion that solar heating of a home in Saskatchewan was not appropriate, but we could and woul...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...heat flow is more dramatic. A thicker coloured line indicates a longer time taken for heat to move through it. Or in layman terms - in cold climates this translates to more heat in your house and more money in your pocket, or in warm climates, more unwanted heat outside and a lower load on the aircon unit, also savin...

Skylights can be problematic in a high performance home
Windows and doors

Are skylights an asset or a liability?

...heat on sunny days in winter (with the right orientation and angle), but the heat they lose when the sun is down will far outweigh any heat they gain. The real heat gain unfortunately comes in summer when you don't want it. The most common roof angles are a lower slope that don't work well with the angle of the winte...

How to Choose between an HRV and ERV system

Choosing between an HRV and an ERV

...Heat Recovery Ventilation (HRV) is a system that uses the heat in stale exhaust air to preheat incoming fresh air. This reduces the energy required to bring outside air up to ambient room temperature so saves money on heating bills. Similar to the human breathing system as mentioned above, this exchange of air is per...

Off-grid and Net-Zero Housing

A Toronto Off-grid home 20 years later; how did it fare?

...heat, so they connected to the electrical grid after a few years and installed an air-to-water heat pump that provides air-conditioning in summer and a portion of heat in winter, which reduces the demand on the gasoline-powered generator. Part of the energy captured by the solar panels is now resold through the power g...

Habitat workers raise a wall at the the Red River Ex June 2011
LEED Homes

The Canada Green Building Council announces affordable green housing program

...heat recovery, and high performance heating and ventilation systems – saving up to 30 per cent a year in energy and water costs. The homes were completed in three phases over three years, and have now been awarded LEED Gold Certification from the CaGBC. They are now all occupied by very happy families. “Through the g...

The LEED Platinum Beachaus II in Vancouver, BC
LEED Homes

The Canada Green Building Council (CAGBC) Measures the Environmental Benefit of the LEED Certification Program.

...heat island effect, reduce building energy demands, provide urban green space and mitigate storm water flows in urban areas. See our DIY Green roof installation video here. In a statement issued by the Canada Green Building Council, President and CEO Thomas Mueller stated: "I am very proud of how far we’ve come; ...

The LEED Platinum infill house in Toronto
Real estate

Farnham Avenue House

...heating through water-to-water heat pumps and bottom up radiant floor slabs, and geothermal cooling through water-to-air heat pumps, fan coil unit, top down supply air ducts. We also used steam humidification though the air duct system to adjust interior humidity during the dry, cold winter months. A bifacial p...