I am new to the site and was invited today to join you all. As time permits I'll do just that! I am a License Texas contractor sorta retired from it all. I spent 32 years in all aspects of HVAC and don't claim to specialize in any area. I decided to settledown in the college arena and become an HVAC Instructor. I currently teach new students in HVAC residential Basic Electrical and Heating at the Junior College. Hello to you all.