The difference between an HRV and an ERV / Guides

How to Choose between an HRV and ERV system

Choosing between an HRV and an ERV

...the difference between an ERV and an HRV? How to choose between an HRV and an ERV? How much fresh air is required in homes and the best way to provide it are important issues. Energy recovery from exhaust air is becoming common place in cold regions, and two types of equipment can do this - an HRV (Heat Rec...

The importance of Cleaning HRV intakes

How to keep your HRV clean and operating efficiently

...and the system was starving for air. With only the exhaust operating properly the basement was always depressurized, and was pulling radon-rich air from the ground below. Needless to say, the first thing they do when getting similar call backs now is tell the client to go check the intake. How to clean HRV cores and ...

Problem areas of air leakage in a home and blower door test being cond
Air and vapour barriers

Airtight Construction of Homes is Essential: "Your house sucks." "Oh yeah? your house blows!"

...and negative air pressure: Neither positive nor negative air pressure in a home is good, as either puts pressure on the building envelope that promotes air leakage and they will each have different effects and impacts depending on the season, the temperatures and the humidity levels. Pressure differences in warm mont...

Living green wall
Healthy indoor air quality

Living walls: what they do and don't do

...the other hand, is a bit more complicated (in construction, not operation) and as mentioned above, involves mechanically circulating indoor air through the wall. Given the monumental task of purifying air with plants in a dense urban area with significant traffic and pollution, we would choose the passive wall, and i...

Better Basement Design on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...and a vapour barrier. Notice the difference between the studs against the foundation and the studs that formed an interior division wall; the vapour barrier did not protect the exterior wall from damage and mold growth. It caused the damage by prevented the wall from drying to the interior and instead sealed the moistu...

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

...ervice life than a solar thermal system. For a solar thermal system, the less the temperature difference between the coolant and water in the tank, the less power is transferred to the water. This means that the efficiency of the system will vary depending on the temperature difference, which is not the case for a PV...

BC Energy Step Codes - Builder Design Guide &  Requirements explained
Building codes

The new BC energy step code: builder design guide & requirements explained - Vancouver

...and therefore lower maintenance and repair costs). Quality of life will be improved as buildings will have greater thermal comfort for occupants , have less sound transmission and cleaner air quality. This also means properties with greater rental or resale value . So that gives you an understanding of what the n...

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?

...ans, animals, even plants – so is the home large or small in relation to the number of occupants? This might be the ideal time to turf those 20 something kids out of the house, citing that they are risking devaluing their inheritance and that it really is time they got a place they can call their own (and leave us in p...

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

Do Earthships work in cold climates?

...ants need from an encounter with the natural phenomenon of the planet, like the sun, like the rain, like the gravity, like the wind, the condensation, the convection, all of the natural phenomenon of the planet are studied and observed and built into these buildings so that they, through encounter with the natural phen...

Preventing radon gas in homes starts with testing for radon - the only sure way
Radon in Homes - Mitigation

Radon Gas Awareness - Up to 10% of North American homes tested have unsafe radon levels

...and mitigation techniques in existing homes that tested above safe levels. This page highlights the importance of Preventing Radon Gas in Home s, now be sure to read about Removing Radon gas from Crawlspaces & Basements , Removing Radon Gas from Well Water , and Choosing Between The Difference Between an HRV and an E...

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

...ane. Don't attach windows by putting screws through the shims. Put the screw either just above or below, then remove the shims when the window is secured. Shims will offer little insulation value, and are most likely wet when purchased and installed, so as they dry they will shrink and allow air to leak out and in. ...