From the few searched threads I've found, there may be as many opinions as there are people:
I'm having a new home built with walls and ceilings sprayed with open cell insulation. I'm in eastern Massachusetts. The basement has radiant heating, the "ground" and 2nd floors each have a heat exchanger from the boiler. In my previous three furnace heated houses, I've needed humidifiers on the furnaces for the winter. Will I need humidifiers for this house- considering it's a "tight" house?