Mainline Htg. and A/C is a heating & air conditioning contractor based in Alabaster, Alabama. Read below to learn more about Mainline Htg. and A/C and get REAL reviews from past clients. Have your own review of Mainline Htg. and A/C from Alabaster, Alabama that you’d like to post publicly? We’d love to have it on the site after we verify its authenticity, scroll down and post your review below!