Dependable Heating & Air came out last week to check my unit that was not working. They diagnosed the problem, and they discovered that the coil had been leaking. They ended up having to replace the coil, and then they refilled it. Two young men came out to do the work, and they were both very courteous, and very nice young men to deal with. I have used Dependable Heating & Air before, and I will use them again! They are my first call whenever I have a heating and air problem!