How Much Does It Cost To Run a Pool in Perth?

A backyard pool can transform the way you enjoy your home, but many owners underestimate the ongoing costs that come after installation.

Electricity, chemicals, water top-ups and occasional servicing all contribute to what you pay to keep a pool. For pool owners, these expenses can vary depending on pool size, equipment and usage patterns. Together, they make up the ongoing cost of pool ownership.

When people ask ‘how much does it cost to run a pool?’, the answer depends on several factors, including equipment efficiency, water chemistry, heating and how often the pool is used.

Understanding where your money goes makes it easier to budget accurately, choose the right equipment and avoid preventable expenses down the track.

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Key Takeaways

• Most residential pools cost somewhere between $1,200 and $2,500 per year to run

• The pool pump is the single biggest contributor to electricity costs

• Saltwater pools are generally cheaper to run on chemicals than chlorine pools

• Heating is the variable that moves costs most dramatically

• Running costs shift across the seasons; summer typically costs more than winter

• A pool cover is one of the highest-return investments a pool owner can make

• Regular water testing prevents small imbalances from becoming expensive problems

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What are the Typical Pool Running Costs?

While every pool is different, most running costs fall into a handful of predictable categories: electricity, chemicals, water usage, maintenance and, if applicable, heating.

As a general guide, most residential pools cost between $1,200 and $2,500 per year to operate, depending on the size of the pool, the equipment installed and how often it's used.

The figures below provide a broad indication of what pool owners can expect to spend annually.

Actual costs will vary depending on pool size, equipment efficiency, heating requirements and usage patterns. These figures are broad estimates only and exclude one-off repairs or equipment replacements. For a figure specific to your pool, give our team a call.

Electricity: The Biggest Line Item

For most pool owners, electricity is the largest ongoing expense. The biggest contributor is the pool pump, which runs daily to circulate water, distribute chemicals and support filtration; and because it operates so frequently, the type of pump you choose has a significant impact on your annual expenses.

Single-Speed vs Variable-Speed Pumps

A standard single-speed pump runs at full power regardless of what the pool actually needs. It's cheaper to purchase, but it consumes electricity at the same rate whether it's doing routine filtration or running a cleaner. That inefficiency shows up on your bill every month.

A variable-speed pump adjusts its output to match the pool's requirements. It can operate at lower speeds for day-to-day filtration and increase output only when needed; for backwashing, running a cleaner, or heating. The result is substantially lower energy consumption and, in many cases, lower operating costs over the life of the pump.

Running Your Pump at the Right Time

Timing also influences your electricity costs. If your home has rooftop solar, scheduling filtration during peak daylight hours can cut the electricity cost considerably. Many pool owners do this routinely during summer, effectively running the pump for very little cost.

If you're on a time-of-use electricity tariff, off-peak hours are worth checking with your energy provider.

Chemical Costs: Saltwater vs Chlorine Pools

The way your pool is sanitised plays a major role in ongoing chemical costs. While both saltwater and chlorine pools rely on chlorine to keep the water safe, how that chlorine is produced and maintained affects how much you'll spend over time.

Salt Chlorinator Pools

Salt chlorinator pools use a chlorinator to convert dissolved salt into chlorine, reducing the need for manual dosing. Most owners only need to top up salt periodically to account for splash-out, backwashing and rainfall dilution. Add pH adjusters and the occasional algaecide, and annual chemical costs typically sit in the range of $200–$400.

Chlorine Pools

Traditional chlorine pools generally require more hands-on chemical management. Chlorine, stabiliser and pH-balancing products need to be monitored and replenished regularly to maintain safe and effective sanitation. A well-maintained chlorine pool typically costs $400–$700 per year in chemicals.

Why Water Balance Matters

Chemical spend goes beyond the products you add. Maintaining the correct balance helps your equipment operate efficiently and can reduce unnecessary wear and tear.

Water that regularly falls outside the recommended pH range can place additional stress on components such as chlorinator cells, pump seals and heating systems. Addressing small imbalances early is usually far less expensive than dealing with repairs or premature equipment replacement.

Heating: Where Costs Can Move Most

Heating is the variable that can move your annual operating expenses more than any other. Many owners are comfortable swimming seasonally without it, but for those who want to use their pool year-round, the heating system they choose has a direct bearing on what they pay.

Solar Heating

Solar heating uses the sun's energy to warm your pool water, making it one of the most cost-effective heating options available. Ongoing costs are minimal, with electricity for water circulation being the primary expense.

Performance depends on available sunlight, so solar heating is best suited to extending your season rather than heating on demand.

Heat Pumps

Heat pumps work by extracting heat from the surrounding air and transferring it into the pool water. Because they move heat rather than generate it, they're significantly more energy-efficient than traditional electric heaters.

They remain one of the most popular options for year-round pool use, offering a better balance between performance and operating cost than gas.

Gas Heating

Gas heaters can heat a pool quickly, making them ideal for occasional use or situations where rapid heating is important.

The trade-off is cost. Gas is generally the most expensive pool heating option when used regularly, and for most, it makes more sense as an occasional top-up than a primary heat source.

Water Loss and Top-Ups

Water is often an overlooked cost. Through evaporation alone, a pool can lose a surprising amount of water over a year, and that loss dilutes your chemicals too, meaning you'll need to add more balancing and sanitising products to maintain water quality.

The Case for a Pool Cover

A well-fitted cover can substantially reduce evaporation, helping to conserve water and minimise chemical loss. It also retains heat overnight, reducing the amount of energy required to maintain comfortable water temperatures.

For heated pools, the savings can be substantial. Even for unheated pools, reduced water consumption and lower chemical demand make a pool cover one of the most cost-effective purchases a pool owner can make.

Maintenance and Servicing

One factor that significantly affects how much it costs to run a pool is how well it's maintained. Owners who stay on top of water testing, chemical balance and routine equipment maintenance generally spend less on corrective treatments and unexpected repairs. Most DIY pool owners spend $600–$900 per year on chemicals and consumables.

Professional servicing covers water testing, chemical dosing, basket cleaning and routine equipment inspections. It costs more than doing it yourself, but it also catches the kind of problems that develop slowly and quietly — a scaling chlorinator cell, a blocked filter, a worn pump seal — before they turn into larger repairs.

How Costs Change Throughout the Year

What you spend on your pool isn't fixed year-round. For most pool owners, summer is typically the most expensive period, while winter is often the cheapest.

During the warmer months, increased pool use, longer filtration times and higher evaporation rates can all contribute to higher electricity, water and chemical costs. Heating, when used, can also add to overall operating expenses.

In winter, chemical demand generally decreases, and filtration requirements can often be reduced. Unheated pools typically become less expensive to operate, with costs largely limited to routine maintenance and water care.

Knowing this pattern makes budgeting easier, and it's also a good reason to make efficiency improvements before summer arrives rather than during it.

How to Keep Running Costs Down

Understanding where your money goes is one thing. Knowing where you can save is another.

While every pool has unavoidable running costs, a few smart decisions can make a noticeable difference to your annual spend without compromising water quality or equipment performance.

Upgrade to an energy-efficient pump: If your current pump is ageing or running at a single speed, upgrading to a variable-speed model can reduce electricity consumption. Pairing it with an optimised run schedule can further improve efficiency without affecting filtration performance.

Install a pool cover: A quality cover does more than reduce evaporation. It also slows chemical loss and retains heat overnight, which reduces how hard your heating system has to work. For most pool owners, it's one of the most cost-effective purchases they can make.

Keep your salt cell and equipment maintained: Scale build-up can reduce chlorine production and force equipment to work harder than necessary. Regular maintenance helps maintain efficiency, extend equipment life and prevent costly repairs.

Stay on top of water testing: Weekly checks of chlorine and pH take minutes and cost very little. Catching an imbalance early is far cheaper than correcting a large one or replacing equipment that's been quietly degrading because the water was out of range.

Expert Advice for Smarter Pool Ownership

Understanding how much it costs to run a pool is only part of the equation. Knowing where you can improve efficiency and reduce unnecessary expenses can make a significant difference over time.

Every pool is different, which is why our team provides practical advice based on your equipment, usage and long-term goals.

From routine maintenance and water testing to equipment upgrades and servicing, we're here to help you get the most from your pool year-round.

Book a service call, visit us in Myaree, or get in touch with our team for practical advice tailored to your pool.

Frequently Asked Questions

Q. How much does it cost to run a pool per month?

A. Most residential pools cost between $100 and $210 per month to operate, covering electricity, chemicals and water usage. Costs can increase during periods of heavy use or if the pool is heated.

Q. Is a saltwater pool cheaper to run than a chlorine pool?

A. Generally, yes. Saltwater pools typically require fewer ongoing chemical purchases than traditional chlorine pools, resulting in lower annual chemical costs. However, salt chlorinator cells will eventually need replacing as part of normal maintenance.

Q. Does a variable-speed pump actually make a difference?

A. Yes. Variable-speed pumps use significantly less electricity than traditional single-speed pumps because they can operate at lower speeds for routine filtration. Over time, that reduction in energy consumption can add up to real savings on your electricity bill.

Q. How much does heating add to running costs?

A. The impact depends on the heating system used and how often the pool is heated. Solar heating typically has the lowest ongoing operating costs, while heat pumps offer a balance between performance and efficiency. Gas heating is generally the most expensive option for regular use.

Q. Can I save by running my pump for fewer hours?

A. Not always. Reducing pump run times too aggressively can affect water quality and place additional strain on your pool system. A better approach is to optimise your filtration schedule and use energy-efficient equipment wherever possible.