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Re: Heater core flush pump?
Posted to HVAC Forum on 1/16/2025

Depending on access, I would probably only attach one end of the hose between the flush gun and the heater core. Hold the hose with one hand and push the gun into it. You won't overpressure it that way. I would also start with a low pressure 40psi and go up if... Login to read more.