I never thought of this until the faucet in the bathroom began to leak again.
I've isolated the leak to the connection between the faucet and the rest of the plumbing. It only happens when I drain the hot water heater and allow it to heat again without using any other water. The connections are all as tight as I can get them, but continues to leak.
Can I just replace with a household type faucet? They are much higher quality at the same cost as the ones my local RV deal sells. I'd likely install the stainless lines too, the stress on the plastic tubing seems to disagree with the installation.
I'll be installing an expansion tank at the same time.
When you refill your HW tank do not open vent relief valve, and allow water to come out, allow a air cushion at top of WH. Hot water needs room to expand.
I replaced bathroom and kitchen sink faucets with better quality units from HomeDepot. Straight bolt in and no flow re-stricter was needed for proper performance.
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2012 Winnebago Itasca Meridian 42e Cummins Freightliner; 2009 Honda Fit
We have an RV unit in the bathroom but the sink faucet is a home style one. There is no reason why you can't use a homestyle faucet or shower setup in an RV. They all will leak too. For us, it is usually easier to replace at Lowes/Home Depot than try and find an RV store on a Sunday.