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 New water heater installed leaks and low water pressure
Author: sknapp (MI)

I've searched several other posts regarding this same issue, but I still wanted to ask for clarification. I installed a new Rheem 50 gallon natural gas water heater in my home. Everything was done in order according to instructions, however upon testing the water heater, there is a very slow leak coming from the dielectric union for both the hot and cold water. This droplet forms beneath the galvanized union nut and moistens the threads of the adapter that connects to the pipes on the tank itself. I've tightened the union as tight as I physically can. I've come to the conclusion that I may need to either replace both unions or disconnect them and use pipe dope/thread sealer instead of Teflon tape and try again. Please advise if I'm wrong.

The other big mystery however is that one sink now has next to no water pressure. I know what you're thinking, there is an obstruction in the line. I'm not sure this is the case because not only is it the closest sink/faucet to the water heater, but it is a dual sink vanity. The faucet closest to the water source coming out of the wall beneath the sink is the one that is suffering, NOT the furthest sink. I disconnected the entire faucet assembly and cleaned it out without any improvement. Please help explain this.

I am on well water rather than municipal water. I've got a pretty sophisticated (at least in my opinion having never been on well water my entire life) water softening system as well as a pressure bladder to maintain water pressure throughout the house. PSI is between 45-50 according to the gauge on the pressure bladder.

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 Re: New water heater installed leaks and low water pressure
Author: george 7941 (Canada)

1) You are not installing the unions correctly.
2) It looks like the faucet is still clogged despite your cleaning attempts. Did you clean out the aerator?

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 Re: New water heater installed leaks and low water pressure
Author: sknapp (MI)

You could say that...it is a stupid IKEA faucet that the aerator cannot be removed, so I scraped it out with a small screwdriver out of frustration...still no improvement.

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 Re: New water heater installed leaks and low water pressure
Author: george 7941 (Canada)

Next step is to check the flow from the supply lines feeding the faucet, the checking being done with the faucet disconnected and out of the picture.

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