Thanks for the feedback. My worry for draining is that the water will be trapped in the heat exchanger where the coil piping is located. Other than that its seems like a good thing to do especially with a rebate. I also heard that Rheem was a good one as well as Rinnai. Who do you recommend for selling/installing. What is typical cost for the heater and installing.
Thanks again. This forum is just awesome.
Dave M
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