Energy recovery ventilation / Guides

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.

...recovery unit that used polyethylene film for the heat exchange media. This unit used buoyancy effects and was hot at the top and cold at the bottom. The engineering technician Mr Dick VanEe built the heat recovery unit, and based on his experience building it started a company to make heat recovery ventilation units. ...

Off-grid and Net-Zero Housing

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

...ventilation air is controlled at the source by a continuously operating energy recovery ventilation system (ERV) that filters pollutants. All building materials were carefully selected to prevent any interior source of chemical and biological contaminants by using products such as concrete and glass countertops and w...

The Top Twelve Green Building Trends for 2020
Planning and Design

Find out what's trending in 2020 for Green Home Construction

...Energy homes The higher cost of energy combined with an increasing awareness of the global climate crisis is a driving force behind the trend towards more energy-efficient home construction . And Zero Net Energy home construction is a trend that is quickly taking off; read more here about the Canadian Zero Net Energy...

Earthship in Taos, New Mexico, shame they don't work in cold climates
Concept and design

Do Earthships work in cold climates?

...Ventilation: Heat recovery ventilators (HRVs) are mandatory in performance rating systems like LEED, Novoclimat and Passivhaus. They are also mandatory in some regional building codes, but they are not found in Earthships. Instead, an Earthship gets ventilation through what they call earthtubes, and ventilation openi...

Condensation on windows in our homes - why is it there? - how to stop it?
Walls and Roofs

Condensation on windows is a pain but is it a problem & how to stop it?

...ventilation system with heat or energy recovery depending on the climate zone the property is in. To learn more about mechanical ventilation systems, see here – or to discover how to choose between an HRV or ERV unit, see here . If in a cold climate, it’s also a great idea to fit a low level evacuation pipe on the HRV ...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...recovery ventilator) or ERV unit (energy recovery ventilator ) dedicated to the basement can be very effective. There is a continuous radon monitor called a Radostat that controls ventilation equipment by activating it when radon levels reach a peak 150 Bq. The HRV will kick in to high speed, and once levels have dropp...

Passive House in Quebec
Passive House

The Passive-Aggressive House - Our History of a Passivhaus Build

...energy, and tightly sealing all cracks. Less obvious, perhaps, is the minimization of “thermal bridges” such as concrete balconies – like those jutting out of most condos that siphon heat out of the floors all winter long. A super-duper heat recovery ventilator is necessary to bring in fresh air while minimizing heat...