5 Signs Your Pool Pump Needs Replacing

Your Pool Pump Is the Heart of Your Pool

Without a working pump, nothing else in your pool system functions properly. Chemicals don't circulate, the filter doesn't clean, and algae takes hold quickly. Most pool pumps in Perth last between 7 and 12 years with proper maintenance — but Perth's heat and heavy summer use can shorten that lifespan significantly.

Knowing the warning signs of a failing pump means you can replace it on your terms — not in an emergency, mid-summer, when your pool turns green in 48 hours.

Sign 1: Unusual Noise

A healthy pool pump is relatively quiet — a consistent hum. If you're hearing grinding, screeching, rattling, or a loud vibrating noise, that's a mechanical problem. Common causes include worn bearings, debris caught in the impeller, or a motor that's reaching the end of its life.

Don't ignore noise. A pump that's working hard to overcome a mechanical fault is drawing more power and heading toward total failure.

Tip: If the noise is a rattling or sucking sound, check the skimmer basket and pump basket first — a blocked basket causes cavitation, which sounds alarming but is an easy fix.

Sign 2: Loss of Suction or Flow

If your pool water looks still or you notice the return jets have significantly reduced pressure, the pump is struggling. This could be a clogged impeller, a failing capacitor, air leaks in the suction line, or a motor that's losing power. Any of these will affect water circulation and allow algae to establish.

Sign 3: The Pump Is Running Hot

Pumps generate heat, but they should never be too hot to touch. An overheating pump is usually a ventilation problem, a motor fault, or the pump working too hard against a blockage. Persistent overheating causes premature motor failure and is a fire risk if the pump is near any flammable material.

Sign 4: Visible Leaks

Water pooling around the base of your pump is a problem. Small leaks often come from worn shaft seals, which are a relatively affordable repair. Left unaddressed, a small seal leak becomes a larger structural problem and can cause the motor to fail from water ingress.

Sign 5: It's Over 10 Years Old and Needs Frequent Repairs

If you're calling for repairs more than once a year on an older pump, the maths usually favours replacement. Repair costs on an ageing pump add up quickly, and a new pump is significantly more energy-efficient. Modern variable-speed pumps can reduce pool running costs by 30-50% compared to older single-speed models.

What to Do Next

If you're seeing one or more of these signs, get a professional assessment before the pump fails completely. In many cases, a motor replacement or impeller clean will resolve the issue. In others, full pump replacement is the right call. Either way, you want that conversation to happen on a Tuesday afternoon — not a Saturday in January when your pool is full of guests.

Need help with your pool or home maintenance? Call Macca's on 0492 313 347 or visit maccaspoolandhousemaintenance.com.au for a free quote. Servicing Duncraig, Joondalup, Hillarys, Karrinyup, Sorrento, Scarborough and surrounding suburbs.