I have been in the geothermal side of the business for the past four years. I have serviced and installed many Waterfurnace units in that time. I've done mostly duct board installs and a few sheet metal. I have also serviced a few gas furnaces and air to air heat pumps. The reason I'm here is I want to forward my career by acquiring my NC H3 license. I would like you guys to help me with that by answering questions about the license. Thank you for any help you can offer me.