Quote:
Originally Posted by Fabfour
Sorry, I'm sure this is covered already. But the search engine on this site is lacking.
I have a friend that has a tankless water heater and the best the heater will do is lukewarm.
Does anyone have a suggestion on why it won't provide hot water?
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Hard to say without more specifics, but a tankless water heater will raise the water temp a certain number of degrees at a certain flow rate, so if your heater is designed for 50 F rise at 50 psi, and if you flow water through it at a higher pressure and higher flow, it may not be able to provide water at the temp you require.
Try turning down the pressure a bit and see what happens.
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