i had them come for a routine summer checkup and the service guy told me my system was in very good shape that and if i wanted to get more freeon so the house would cool better ( and he could charge me for more) so i said yes that night the a/c went out and i called jon wayne again the next day another service guy told me that my a/c was in bad shape and that putting more freeon put to much pressure on the system and it blew a part out so he told me he could fix it by adding the new part (more charges) not even 4 hrs later the a/c went out again i was feed up with jon wayne i just asked for my money back being that they broke my a/c unit that was running fine they told me they could not do anything about the refund so much for customer service i just wish they would have been honest from the beginning if my system was in bad shape well tell me and tell me if you add freeon it could blow the system and then i would have not added the freeon and i would still have had a running a/c but warning these guys are out to get you for every penny