09/22/2026
A wet spot under the pump does not automatically mean you need a new pump.
Here’s how to narrow it down:
A shaft seal leak usually shows up between the pump’s wet end and motor, near the seal plate. Water may drip from the bottom of the housing and can eventually damage the motor.
A lid O-ring leak usually leaves water around the clear lid, lid groove, or clamp. It may also cause air to enter the system and make the pump lose prime.
Water can travel, so the exact source matters. Before inspecting anything, shut off power at the breaker and verify the pump cannot start.
Check for:
• Moisture around the lid and O-ring groove
• Water below the seal plate
• Cracks or damage near the impeller area
• Motor age and overall condition
• Amp draw compared with the motor nameplate rating
A seal or O-ring repair often makes sense when the motor is in good condition and the housing is sound. Replacement may be the better call when the motor is old, amp draw is high, the seal plate or housing is damaged, or multiple major parts are failing.
In the East Valley, late-September dust and wind are still loading filters. Don’t shorten pump runtime yet just because temperatures are easing.
Want a real diagnosis before spending money on a new pump? Book a Virtual Service Call:
https://completeaquaticsolutions.com/virtual-technician?via=casazx
Learn more at https://casarizona.com?via=casazx