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    PoetAdams's Avatar
    PoetAdams Posts: 4, Reputation: 1
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    #1

    Jul 17, 2022, 10:10 PM
    What is a tempering valve?
    I got a new hot water heater unit, and the guys in the store said we have to install a tempering valve for our new water heater. What is the purpose of the tempering valve and how does this work?
    jlisenbe's Avatar
    jlisenbe Posts: 5,020, Reputation: 157
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    #2

    Jul 18, 2022, 08:56 AM
    A tempering valve allows some cold water to mix with the hot water to prevent the hot water from potentially scalding. Is this for a residence or a business? My understanding is that residences don’t typically use them since you can simply turn the water temp down to a safe level.

    Might want to check with local code. They are required in some places.
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