Was wondering if anyone can help me with references: books/websites, etc. to find the median salary range for a HVAC commercial position in the Pennsylvania Tri-state area. Pittsburgh, Ohio, WV. I have the 2 yr degree from Penn Tech and over 20 yrs (not continual) experience. I have only been out of the field for 2 yrs. as a self-employed residential home remodeling (handyman-I do it all)

Would appreciate any and all information you can provide.