Recent Review: It took 3 weeks to get the new heater shipped. In the meantime, I had Maximum Comfort plumb in a bypass so that the hot tub pump could keep circulating water in my hot tub so that it would not freeze (paid separately). Perhaps I made a mistake in not telling them to do all the new heater work in one day, but the three trips they made to remove the old heater (1), put in the new one and reverse the heat exchanger on it, plumb, wire, provide natural gas to the new unit (which was already in place from the old one) (2), and then vent it (3), resulted in 21 hours of billed labor at $95/hour/person, or $1,995, which shocked me, especially considering the mark up they probably got on the new heater. The labor charge for them to come out and diagnose the problem and to plumb in the bypass was in addition to the above. Since they are the only company I could find in this area which would perform this type of service, I would use them again if necessary, but would be much more careful in managing their labor cost, and try to get a guaranteed price up front. They used two workers for all the installation, for a labor cost of $180/hour, and I'm not convinced this was necessary for the entire process. I contacted them to complain about the labor costs, but got no results.