What is an HRV / 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, ...

DIY air exchanger installation video

DIY Lunos HRV air exchanger installation video

...is heat recovery ventilation (HRV) system is very different than what people are probably used to seeing, where air is directed to a centralized core for a heat exchange before being exhausted from the house. Lunos is a decentralized system with a series of self-contained units, each with their own ceramic heat exchang...

The importance of Cleaning HRV intakes

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...

How to Choose between an HRV and ERV system

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 & air exchangers

...isture and provide sufficient fresh air for occupants. Ventilation systems- What is an HRV? Mechanical ventilation systems are known as heat exchangers , HVACs (Heating, Ventilation and Air Conditioning) or HRVs (Heat Recovery Ventilators). The point of these systems is to remove moisture and provide fresh air to y...

Heat Recovery Ventilation - Lunos video

Lunos ductless air exchanger

...HRVs) are an essential component of any air-sealed high performance home, bringing in fresh air and removing moisture. An HRV uses the heat in stale exhaust air to warm incoming fresh air. Until now, this has meant a centralized heat transfer core and a network of ducts feeding and drawing air throughout the home. With...

Living green wall
Healthy indoor air quality

Living walls: what they do and don't do

...ants in a dense urban area with significant traffic and pollution, we would choose the passive wall, and invest in better HRV filters if air quality is a concern. We spoke with Joel Kucer of Envirozone, a Montreal-based company which builds passive living walls, to get the answers to what he finds are his most freque...

Multi-unit Passive House for Heiltsuk First Nation on Campbell Island,
Passive House

Multi-unit Passive House for Heiltsuk First Nation in British Columbia

...and a product list were completed. At the same time Britco and Spani personnel refined and costed the scope of factory and site work, and Red Door Energy worked on Passive House precertification. The logistics of transportation by truck and barge also had to be understood, and the risks and uncertainties mitigated with...

Which Houseplants are Best to Clean Air & Remove Toxins?
Healthy indoor air quality

Which houseplants are best for purifying air? Ecohome investigates

...ants clean indoor air? The idea that house plants filter and clean indoor air is at best a mini-truth, and at worst a total myth, and like any pseudo-science health trend, it can have a negative impact as well. Providing false solutions to human health issues gives people a false sense of security. Having plants in y...

Basement Design for walls prevents mold & midlew when renovating & finishing
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...an grow on virtually any organic material as long as the moisture levels it likes and oxygen are present. Because mold eats or digests what it is growing on, it can damage a building and its furnishings. If left unchecked, mold eventually can cause structural damage to building materials and can cause health problems...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...is the answer to not insulate? No, there isn't enough energy for that. Is the answer to not use composite wood materials? No, there aren't enough trees for that. What we need to do is acknowledge these changes, and design walls to handle moisture effectively. As most new North American homes are now e...