How Air Exchangers Work


Do you have moisture on your windows?

moistureCondensation or moisture on inside of windows during the heating season is caused by water vapour contained in the indoor air (measured by the air relative humidity) condensing on the cool interior glass surface of the window.  

The solution to eliminate condensation is to lower indoor relative humidity. Less indoor relative humidity means less or no window condensation.

The reason for this is that the indoor air dew point temperature (the air temperature when water vapour in the air condenses on surfaces) becomes less as the air relative humidity is lowered. To stop the condensation you just need to lower the indoor relative humidity to where the air dew point temperature is less than the inside window temperature.

An HRV or ERV is an energy efficient way of reducing the indoor relative humidity during the heating season. The principle is simple, one HRV or ERV fan exhausts humid indoor air from the house and a second HRV or ERV fan supplies drier outdoor air into the house.

It is important to remember that if relative humidity is high in your home, windows are not the only thing that might have condensation. Water on your windows may also be a sign of condensation on the wood framing inside your walls or ceilings. Over time this condensation can result in mould growth and can rot the structure of your home. The solution is to lower the indoor humidity levels with an HRV or ERV.

Watch out for windows that are covered much of the time with curtains. Closed curtains may block drier air from reaching the windows and trap more humid air behind the curtains. This humid air will still condense water on the cool windows, so open curtains for a significant part of the day.

Fully Ducted Exhaust Ducted
Simplified Installation Closet Installation
Compact Bathroom Install  
How Does An Air Exchanger Work: Proper ventilation is key to a healthy and good quality indoor air quality.

Should I Choose an ERV or an HRV? There is alot of confusion between an energy recovery ventilator and a heat recovery ventilator and which one to use. Learn the difference.

Why Do I Need to Ventilate My Home? Find out why you need a vanEE Air Exchanger and its importance to your quality of life.

Why should I choose a vanEE Air Exchanger? vanEE Is an industry leading manufacturer, learn why you want to choose a vanEE Air Exchanger.

Can I Get a Medical Tax Credit? You may be able to get a medical tax credit after having a vanEE Air Exchanger installed.




Service Parts & Technical Assistance: If you are looking for service parts for your vanEE Air Exchanger or technical assistance on a product you bought from us.

How Air Exchangers Work: Learn how HRV & ERV Air Exchangers work and how they are installed.

Contractor Pricing & Support Eden Energy Equipment provides superior technical support and discounted pricing to HVAC contractors. Call us at 1-800-665-3336

Literature & Technical Specs: If you are not sure which product will work best or simply need a price let us help you.
Eden Energy Equipment
Eden Energy Equipment is a leading supplier of vanEE Indoor Air Quality products. We have over 30 years experience improving your home comfort with vanEE products.
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