Experts and the utmost profession als - Bob came by a new home we purchased that has a Geothermal HVAC installed. I know nothing about these but I wanted to make sure it was inspected. Bob w...ent through everything with me, and ran the entire system through the mill. I will be signing a contract for my yearly service with Abtech. Not only is the work superior, the service is excellent, on time and I can rest easy knowing that my needs are taken care of. Trust and honesty go a long way with me. You won't find anyone better than Bob and Abtech.