I am tasked by my wife with installing a water purifier underneath my kitchen sink, and I came across this little toy on Amazon, it looks good but the faucet seemed extra to me, 'cause I have one and it's already in place (see the pictures below, it's connected to a heater installed in the under-sink cabinet).

I am wondering, if I can use the existing faucet and its infrastructure such as the pipe, etc, just replace heater with the purifier filter sets. Will it work? It seems a easier job for me than drilling a hole on the counter-top and doing an overhaul.

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  • You'd run all water at that location through the filter? You'll burn through 'em in a hurry. That could get expensive.
    – isherwood
    Oct 17 '19 at 19:44
  • Not all water. Only the water intended for drinking. Other goes through different faucet.
    – J.E.Y
    Oct 17 '19 at 20:07
  • I see no reason why you couldn't do this, but the question is a bit broad for SE. I'm not clear on what new hole you'd drill in your countertop.
    – isherwood
    Oct 18 '19 at 12:53

Sure, so long as you can make the pipe fit a faucet designed for hot water should work just fine with cold water.

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