What a pool pump costs to run

People budget for chemicals. Almost nobody budgets for the power bill.

An older single-speed pump can run to several hundred dollars a year in electricity on its own, and published Australian estimates for one put it in the range of roughly six hundred to twelve hundred dollars a year depending on the pump, the hours and what you pay per unit.

That is more than most people spend on chemicals and servicing put together.

This is the part most pool owners have never been told.

From 1 October 2022, most swimming pool and spa pumps sold in Australia have to meet minimum energy performance requirements and carry an energy rating label. That comes from the Greenhouse and Energy Minimum Standards (Swimming Pool Pump-units) Determination 2021, under the GEMS Act.

So if your pump was bought before late 2022, it was never held to that standard. It might still be a good pump. But nothing required it to be an efficient one.

The gap between ratings is not small. Published figures put a six-star pump at roughly 563 kilowatt hours a year against about 1,319 for a one-star unit. Same job, more than double the power.

A single-speed pump has one setting: flat out. It does not matter whether it is skimming leaves off the top or turning the water over slowly overnight.

A variable-speed pump can run slowly for most of the day and only wind up when it needs to. Because power draw climbs much faster than speed does, running slower for longer uses far less electricity to move the same water.

Australian suppliers commonly quote savings in the hundreds of dollars a year for that swap, and payback inside a couple of years. Treat any specific number you see as a sales figure until it is worked out on your pool, your hours and your tariff.

The honest version: the bigger your pool and the longer your pump runs, the better that swap looks. On a small pool that runs four hours a day, it looks a lot less exciting.

The rule of thumb is that the water should turn over about once a day. How many hours that takes depends on your pump and the size of your pool.

In practice, most Sydney pools need more hours in summer than in winter, and more under heavy trees than out in the open. A pool on the Upper North Shore under gums is a different job from one in Western Sydney in full sun.

Running longer than you need costs money and wears the pump. Running less than you need shows up as cloudy water, and then people start tipping chemicals in to fix a circulation problem. That is an expensive way to solve it.

A pump that is noisy, leaking at the seal or tripping the safety switch can usually be repaired, and often should be.

The case for replacing is different. It is not that the old pump has failed. It is that a pre-2022 single-speed pump can quietly cost more each year than the repair bill, and keep doing it.

We will tell you which one you are looking at. If a seal kit fixes it for a few years, that is what we will say. If the sums genuinely favour replacing, we will show you the sums rather than just the quote.

Either way it starts the same: have a look at the gear.