I just purchased a new Panasonic Whispergreen bathroom fan and I like the idea of having it on at low speed at all times. However, since our house is pretty new and has fairly tight construction, I'm concerned that this will create a vacuum condition inside the house and could interfere with the drafting of exhaust gasses from our furnace or water heater. In doing a little research, I found the Honeywell Y8150 fresh air ventilator. I was wondering if anyone has any experience with this, or if I really shouldn't be concerned about it, or is there a better option like a heat recovery ventillation system? I live in Minnesota, in case that matters. I also don't really want to spend $1000+ for a heat recovery ventilator, but if that is what I need, I'd like to know.