In Phoenix summer, a dead pool pump is a countdown clock: about 72 hours of stagnant 90° water before algae takes over. Whether you repair or replace matters — and the honest answer depends on the age of the pump, the nature of the failure, and some energy math specific to Arizona.
First: What Actually Failed?
- Humming but not spinning — often a failed capacitor: an inexpensive fix on a healthy pump.
- Screeching or grinding — worn bearings. Repairable, but on an older pump this is usually the beginning of the end.
- Leaking at the pump — shaft seal or housing. A seal is cheap; a cracked housing on an old pump tips toward replacement.
- Losing prime — could be a suction leak, a bad lid o-ring, or plumbing — diagnose before blaming the pump.
- Dead silence — breaker, timer, or motor. Needs proper electrical diagnosis.
The Arizona Energy Math on Variable-Speed Pumps
Here’s the thing most homeowners don’t realize: an old single-speed pump is often one of the biggest electricity users in an Arizona home. Because pumps here run long hours across a long season, replacing an aging single-speed with a variable-speed pump routinely cuts pool energy costs by well over half — variable-speed pumps move water more efficiently at low RPM for the bulk of the day. On typical Valley run schedules, the upgrade frequently pays for itself in a couple of years, and both major utilities have historically encouraged the swap. (Federal regulations also mean most replacement pumps sold today must be variable-speed anyway.)
The Simple Decision Framework
- Pump under ~5 years old, minor failure → repair it.
- Pump 8+ years old, major failure (motor, bearings, housing) → replace, almost always with variable-speed.
- In between → compare the repair quote against the replacement quote minus expected energy savings. A trustworthy tech will show you both numbers.
Whatever You Do — Do It Fast
Every day without circulation in summer increases the odds you’re also paying for a green pool cleanup. If your pump just died, get water moving: even a temporary fix buys you time to make the bigger decision calmly.
Aqua Shine repairs and replaces pumps from Pentair, Hayward, Jandy, and more across Glendale, Surprise, and the greater Valley — every repair over $50 approved by you before work begins. Learn more on our pool repair page, and ask about pool financing if you’re stepping up to a variable-speed replacement.
Need a hand from a local pro? Aqua Shine Pools serves Phoenix, Scottsdale, and the West Valley with weekly service, repairs, and rescues — call (480) 788-9772 or request a quote.