Purchased Navien unit installed by another plumber. The Shower water gets ice cold during the shower. checked Naviens website for a certified tech. They referred me to Nicholas, 1llc. After 12 tries he could not solve the problem. He said it was the water pressure from the town and reduced our water pressure the point that you cannot run any other water than the water you are using (e.gg washer and shower, shower, and water the lawn.)
Each time he came he would blame the house, or the town, or something else. He said the problem was that our heater pipes were full of sediment and want to charge $1500 to flush it out. He already charges us around $1500 and just made things worse. The manufacturer is to blame as well. He calls the manufacturer each time, but no one can solve the problem.
He does show up exactly where he says he does and is very professional except other than blaming everything for no hot water.
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