I just finished the NACHI TV’s advanced HVAC 17 hour course. It was great (Well Worth The $150 Price) and had lots of useful/informative information. I learned a lot of great information and feel much more educated on HVAC systems. Ben and the instructor did a GREAT job, the course was well put together and again worth much more than $150 dollars for 17 hours of education. Highly recommended.
Alaska just approved it yesterday: http://www.nachi.org/alaskaapproval2008.htm