Hello from Missouri. My name is Roger C. and have been recently introduced into the HVAC "World" fresh out of college. I know "sigh" another one thinks that he knows everything. I can honestly say "NO" even though I did pretty good in college learning from a textbook. Went to Ozarks Technical College after being laid off from my job in the welding field of 10 years. I was walked out in Dec 2009 due to breaking the company up in smaller sections with about 300 other men and women. Instead of sitting at home collecting unemployment, I took advantage of a government program to learn a field that I felt will be long term, year round, challenging but satisfying employment that will hopefully provide for me and my family. I have been working one on one with a technician (ryan1088) during my Co-op to finish my last semester and was introduced to this site by him. I hope to use it as effectively as he has in helping others as well as mostly helping me in my future technician troubleshooting challenges. Recently I was hired by the company that I have been doing my Co-op with. I am employed once more and hope for a successful career. Thank you for listening to my very quick introduction, which sometimes leads to babbling and non interesting small talk. Hopefully my next posts will be more intelligible in nature. Roger C.