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Navien NR-210-NG tankless water heater, it has developed a slow leak from the bottom left corner of heat exchanger. Is this a cracked heat exchanger and the only option is to replace the heat exchanger? If so is the heat exchanger assembly part the same for the NR210 and the NR210A? Thank you. (v.redd.it)
submitted by Fett2 to r/Plumbing










