They hailed the old heater out and installed the new unit in half a day. The problem started when I asked them to come back to check on some of the issues I was having.I got excuse after excuse as to why the couldn't make it back. Finally after basically threatening them with legal action I got a response. The repairman showed up and I was told - and quot;Wasn't me, couldn't have been anything I did, um I have to go nowand quot; I had another repairman come by from a different company and he said that all that was needed was to flip a breaker switch. Click, problem solved - Oh and NO CHARGE for the call. Sorry to say that I will not recommend them to anyone in the future unless I hear about their customer service improving greatly.