When Minuteman Heating And Air were last here, it was for routine maintenance on my system. They checked out everything when they got here and were efficient in reviewing it and letting me know everything was OK. They told me the unit had no problems for me to worry about, which was good. I like using them because they are always very efficient about what they do, and they don't try and rip you off like other companies. They've always taken good care of my equipment.