ERV / Guides

...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 bes...

...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. O...

...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 dehumidifie...

...ERV (Energy Recovery Ventilator) While similar in concept, 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 energ...

...ERV): Energy Recovery Ventilator installation in this Zero Energy Home © Ecohome An ERV system uses basically the same principle as an HRV (Heat Recovery Ventilator) , which preheats fresh air before it is distributed through the house. In addition, An ERV system also regulates indoor humidity levels which is i...

...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 hous...

...ERV System . The only way walls below grade can possibly dry is to the inside. We have to stop trying to prevent that by wrapping them with an impervious layer of plastic. We also have to realize that building below grade is a different beast that building above grade, and to start respecting the laws of physics when...

...ervicing is worth the money; it will pay for itself through less wear and a longer lifespan of equipment, but also in more efficient operation, and above all, healthier indoor air quality. To read more about the importance of Air Quality in Homes - see here , to read more about how to choose between a HRV & ERV venti...

...ERV and choosing non-toxic building materials and surfaces finishes . So while we quite like living walls, we question claims about their impact on indoor air quality. Simply due to the rate of air leakage in most buildings, it would be difficult for anything short of an airtight house and a virtual jungle of plants ...

...ERV filters range from 1-16; the higher the value the higher the performance. • Air filters with a MERV rating of 6 are capable of catching pollen, lint, and dust. • Air filters with a MERV rating of 8 are capable of removing dust mites and mold. • Air filters with a MERV rating of 11 are capable of catching pet ...

...ERV to protect the indoor air quality of your home. Find all you need to know about Green Home Construction in the Ecohome Green Building Guide Pages .