Brazed plate heat exchanger vs indirect DHW tank
I am trying to decide on installing (buying) a Indirect DHW tank or installing a Brazed Plate Heat exchanger onto an existing electric hot water heater. I haven’t been able to find any information on the pro’s and/or cons comparing the two options. The heat source for either will be a 125K Gas Boiler.
I was leaning towards adding a BPHE but after reading the specs on several sites it looks like with 125K input units only produce 1.3 GPM of hot water. While the indirect tanks can produce substantially more water.
A 40 gallon SS indirect tank will require the associated piping and a circulation pump. A BPHE will require the piping, 2 circ pumps, and a aquastat which will end up being approx. 50% of the cost of an indirect setup while using an older tank and adding complexity.
Am I misunderstanding something on the GPM capability of the BPHE?
Can anyone provide me with the pros/cons of each setup.
Thanks for any guidance and information.
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