"ERV"

ERV / Green Building & Sustainable Home Renovation Information & Advice

Healthy indoor air quality

Which houseplants are best for purifying air? Ecohome investigates

...ERV rating. Home air quality is a growing issue as homes become more energy efficient and airtight. Ventilation systems are now standard requirements in most national and regional building codes and serve to provide fresh air to indoor environments, but we should also be aware of the types of toxins we are introducing ...

Healthy indoor air quality

Why you should never Install air-con in a home with a vapor barrier

...ERV or HRV unit for ventilation, as a way to keep your home cooler in summer and warmer in winter while saving a ton of money. Remember, Insulation is the gift that keeps on giving, long after that fancy new central air conditioning system needs major servicing or replacement. Why are old homes with air-con in great s...

Healthy indoor air quality

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

...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, since large amounts of harmful substances are released into the air. Additional measures are needed to conserve indoor air quality during wildfires. Outdoo...

HRV and ERV

Choosing between an HRV and an ERV

...ERV Ventilation Exchanger Systems. The key questions are: How much fresh air is enough? How much fresh air comes in through the building envelope? 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 a...

Air and vapour barriers

Airtight construction of homes is essential: "your house sucks." "Oh yeah? your house blows!"

...ERV rating of a filter (Maximum Efficiency Reporting Value), which determines the amount of particulate they collect and the quality of air they expel. As a bench mark, the LEED rating system lists MERV 11 as a 'good' quality , MERV 13 as 'excellent'. The higher the number the better. You always want an airtight house ...

Ventilation

Ventilation & air exchangers

...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 dehumidifies wh...