I would like to add a humidifier to my furnace, a York YP9C 100k btu. I am a little concerned that there won't be enough air speed to properly humidify my house, any recommendations? I can't really afford to buy or run a steam unit. My house is about 3200 sq ft(2700 finished), two story and fairly leaky. There isn't a vapor barrier and the windows are aluminum leak-o-matics. I have a Honeywell vision pro IAQ thermostat with a remote sensor and it says that my humidity has been around 30% in the winter and, I think, lower in the summer. I will most likely be using it in the summer too, but I don't have a multi stage a/c so air speed won't be a concern.

Thanks in advance,
Adam