Found another useful link .. might as well share it in case anyone's interested. :lol: http://www.joneakes.com/jons-fixit-d...-or-not-to-HRV

I have one, so I will also chime in here and say YES! Plus there are other benefits like heat recovery and overall house circulation.

+1.

We have one in our place... I used to have just over 500gal of water in the house and we never had any buildup. The old house had noticeable humidity buildup with only 1 tank and did not have an HRV.

problem is that newer homes even though they are not R2000 are pretty air tight and HRVs are nec even without a fish tank, unfortunately they are not code in most places

Another Yes here, HRV + 700 fish gal in the house, everthing is good, although I do notice the HRV runs 24/7 in the winter...

What I was getting at is they are not required by the National Building Code, which is the model code for Canada. I do not know the eastern codes, but in SK, AB & BC they are not required. They are a very good idea as modern homes are sealed too well.

thanks guys this really tells me id be doing the right thing, Kelowna is dry in the winter, summers not that humid either. Ill keep you posted on the changes with it and how the install goes.

Depends where u are as well
They are mandatory in Vancouver Bc but not the surrounding cities

My house is new and it has a simple exhaust fan plumbed in from the cold air return to outside. Does the same thing as an HRV but without the heat exchange. I thought about upgrading but I figured I'd leave it for at least a year before I bothered. I have it connected to a central thermostat that controls humidity levels as well with the exhaust fan and the humidifier. I believe most of the time HRVs are controlled either by simple timers, local humidistats or even just a light switch. Anyways I watched the heat bills last winter when I first connected up the exhaust fan and control and I didn't notice any difference in consumption. I have 100 gallons open top upstairs and about the same worth of open sumps downstairs but there is a lot more exposed water surface than a typical 200 gallon system. The thermostat I use also has some other features it uses to limit window frost, not sure exactly but it works and it's a different setting than the set humidity which is still maintained.

So I guess for me I wouldn't bother with the HRV, I doubt the extra cost and install would ever pay off. But it will likely depend on the demand for it but there are other options for humidity control. You should also check your furnace, it should draw in some fresh air when it operates and many times moisture and mold problems are a result from poor air circulation, not always directly a result from high humidity from lack of ventilation exchange.

Vancouver does have its own building code too..