Tankless water line????

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jw1, May 20, 2010.

  1. jw1

    jw1 New Member

    Messages:
    2
    Hello, I am in the process of installing a new tankless water heater which needs 3/4" supply line. If I tie into a 1/2" line does the distance from the tee matter?
    I was told that I need 3/4" for the flow rate.
    I also have 135psi coming into the house which is in the process of getting a reducer but just wondering what will happen to the pressure when I go from 1/2" to 3/4" line????
    Thanks!!!
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