Humidity problems for large tank

[Doug]

Originally Posted by ClubReef

I wonder if my house has some sort of venting system built in. It's approx 3yrs old. I have a switch on my main floor that says "ventilation control" and whenever it's on, the bathroom fans turn on 24/7. Is this something similar to a HRV? I don't see an HRV unit in the basement though...

Thats sounds like a central exaust system of some kind or just a humidistat that turns on the bathroom fan. It does exaust stale humid air. My new mobile has a similar system. It even turns on the furnace fan and circulates air when the main control is engaged. I assume replacement air comes in via the fresh air vent to the furnace?

However, the problem with that system, is it exausts heat and replaces it with cold air. The HRV, helps with this problem somewhat, by passing the incoming and exaust airs through a central core.