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Re: Heater core flushing
Posted to HVAC Forum on 1/15/2025 2 Replies

Gene,

I have had luck with the pump/bucket setup mentioned by others. I used CLR, but I like the liquid plumber idea for the stubborn ones. I have also found a marine reversible pump I think would work well without having to switch hoses to reverse flow, but... Login to read more.

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