hello everyone. I'm new to this forum & idk how I didn't stumble on it sooner as I'm a member of a few online communities .... been doing hvacr for 12yrs where I specialize in diagnostics. I do some resi but majority of my work is light commercial heat/cool with a heavy involvement in refrigeration diagnostic & repairs. I absolutely love this trade & hope to learn a few things while at the same time possibly helping others. I'm a die hard Steelers fan in case u haven't figured that much.