I also agree that i wouldnt go with the steam. Although, they are great humidifiers the cost and maintenance do not justify them for me. The price that you quoted seems very high, and any reputable hvac company would be able to do all the work, they wouldnt have to sub out the plumbing and electrical. I would look into an april aire 700. They make manual and automatic types. The automatic is nice because it adjusts the humidity level in the home based on the desired percentage and outdoor temperature.