air in lines

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  1. S

    Yikes...lost my water pressure/heat to slab...air in the lines?

    The questions: Do I need to re-pressurize the expansion tank to clear out the air? Should I close all lines in the slab and run one at a time to clear the air? The back story: I noticed that the small blue (expansion?) tank read 0 psi...so I hooked up a hose and turned on the water to...
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