Recommended by friend, Abraham Heating and Cooling did complete check of HVAC for our newly purchased home.Business is operated by father, daughter, son & son-inlaw team. They are an excellent team, working well together. Customer service is exceptional, so exceptional that I signed a year maintenance agreement with them. They offer 10% off of installations with the agreement, as well as priority service. They explain things thoroughly, are hard working, punctual and very polite. The father, Richard, came to give estimate. I could tell by the discussion that he was focused on service to the customer, not making unnecessary work. He was very clear about the scope of the work, offering options. On the work day, the father, son and son-in-law came to do the work. They were easy to approach to clarify or change work. The sons came back another time to install a gas line for our new gas range. The gas source was in the basement just below the living room (where gas fireplace insert will go) and kitchen (gas range installed). Even though basement gas source was close by it was difficult to get gas line to first floor because of other duct work. All in all, the work was done in a timely manner at a reasonable cost. I am very pleased with their work and will probably have them install a better whole house humidifier in the fall.