What is an ERV / Guides

Wildfire Smoke & How to Keep it Outside Homes
Healthy indoor air quality

How to keep wildfire smoke out of Green Homes with mechanical ventilation systems?

...an be 2 to 5 times more polluted than outdoor air under normal conditions. Since outdoor air is usually cleaner, ventilation systems and especially HRV's and ERV's can reduce indoor pollutant levels by constantly changing the air in a building. However, this approach does not work when there is a wildfire in the area, ...

How to Choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

...What is 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 (...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

...What is an ERV? Energy Recovery Ventilation ( ERV ) is the process of exchanging the energy contained in normally fan extracted stale or humid air from homes and using it to treat (precondition) the incoming outdoor fresh air in residential and commercial HVAC systems. During warmer days, an ERV system pre-cools and ...

Passive Solar Home design at it's best - Kenogami House - EcoHome
Passive solar home design

Ecohome Kenogami House wins Home of the Year Award

...an ERV (Energy Recovery Ventilator) was chosen over an HRV (Heat Recovery Ventilator) , as they are particularly well suited to extreme northern climates. Air is able to support less and less water vapour the colder it gets, and an ERV extracts that energy rich moisture from interior exhaust air before it is ejected....

HEPA filters & SMART Air Filters catch airborne dust, pollen, allergens, viruses
Healthy indoor air quality

Buying guide for home air filters in furnaces - HEPA, SMART or Regular?

...ange of permanent and washable furnace filters? See here for details and cost. We also found this US manufactured washable filter that's had full testing and seems good quality - watch out for our video review coming soon! What is a MERV rating on air filters? MERV is an air filter rating system that stands for Max...

Living green wall
Healthy indoor air quality

Living walls: what they do and don't do

...and design perspective, these make for very cool living rooms. Having potted plants in a home makes it more welcoming and relaxing; a living wall ensures you have an abundance of such greenery. And an automated system such as this also means your plants won't die of thirst due to forgetfulness. Green walls for li...

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

...ishes and clothes. This system currently provides 100% of our domestic hot water needs, and this is without skimping on usage." Regarding winter, Alain anticipates that "the lower angle of the winter sun will increase the efficiency of the solar panels on cold, sunny days, and when the heat pump is installed this ass...

Finished basements can lead to mold and mildew
Healthy indoor air quality

Why are basements moldy? How to fix or Prevent a Moldy Basement

...ising many go moldy, and this is hoping that measures have been taken to ensure it is completely protected from ground moisture ingress by waterproof membranes on every single surface. Concrete is like a sponge, and when left unchecked will continue to wick moisture from the ground and distribute it into your home for ...

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

...any unresolved issues which could result in severe and immediate health problems, and even death" Radon, where does it come from & what is safe? Radon gas is a by-product of decomposing uranium in rocks and soil , and homes in all regions across North America are at risk because there is always some amount in the r...

The importance of Cleaning HRV intakes
HRV and ERV

How to keep your HRV clean and operating efficiently

...is more intended to service the main floors and much less the unfinished basement that we rarely use. By no means is this an ideal set up, but it was done before radon gas showed up on my radar. I recently had my air tested and discovered that the radon levels in the basement were significantly higher than Health Canad...

What is Interstitial Condensation? (And how to stop it!)
Walls and Roofs

What is Interstitial Condensation in Walls or Roofs? (And how to stop it!)

...is not. While the mechanism is the same science as surface condensation, interstitial condensation forms in the core of home structures. This causes damage we can't typically see until most of the damage has been done and the only remedy is often an extensive and costly rebuild, which is why it's important to prevent i...