Randy,
Interestingly enough I just completed the training last week, here in the Virginia area. The training was excellent and far exceeds the Home Tune up training. That is not to say the the Home Tune up training is bad. But, I wanted to be able to offer Energy Star ratings and energy ratings for new and existing homes. In order for my rating to be used by a builder or a mortgage company/lender I had to have the prescribed training. I still have some other steps to complete prior to full certification. The RESNET site will give you a lot of info on the process.

I recommend researching your market extensively. I was lucky in the a couple of builders that I already do Infrared work for had asked me if I could do this work for them as well. That really helps me justify the equipment cost. I bought my Blower Door and Duct Tester from Infiltec. Real nice guys and they spent a significant amount of time showing me how to use it. Hope this helps.

Dave