Maintenance Guides / Plumbing & Water

Test well pressure tank air charge

Difficulty: moderateTime: 15 mins

Why it matters

A waterlogged tank causes the pump to start/stop rapidly, burning out a $1,500-$2,500 well pump in months.

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How to do it

  • 1

    Locate the air valve stem on top of the pressure tank.

  • 2

    Turn off the well pump breaker.

  • 3

    Attach a tire-pressure gauge to the air valve stem.

  • 4

    Read the air pressure (typically 28-48 psi depending on pump setting).

  • 5

    If water sprays out, the tank is waterlogged and needs replacement.

  • 6

    If pressure is low, add air with a bicycle pump or air compressor.