John was knowledeable, prompt and reasonably priced. I am so happy to have found him, knowing in the future if I have an a/c problem again I can count on him. I called because my a/c unit was not turning on. He found the problem with the thermostat and also checked freon level, which was low. A/C running great. Was able to come on the day I called, which I did not expect either! Highly recommend using JMAC.