Why the pool running cost calculator matters
Pool running cost is dominated by pump hours and heating, both of which are adjustable, which is why two identical pools can differ by hundreds a month. This page turns that decision into a handful of inputs you can defend in a budget review: volume, unit cost, rate of adoption, and time. The output is a planning baseline, not a promise — it tells you whether the idea deserves a vendor quote, a pilot, or a pass.
- • Biggest swing factor: pump runtime and whether it is variable speed
- • Second-order factor: heating, which can double the bill on its own
- • Often ignored: chemicals and servicing, the steady baseline
What actually changes the answer
pump runtime and whether it is variable speed moves this number first, then heating, which can double the bill on its own. Run a conservative case and an upside case before you commit. If the maths only works in the upside case, treat it as a time-boxed test with a kill date rather than a line in next year's plan.
What to do with the result
Switch to a variable-speed pump and cut runtime to the minimum turnover your pool needs — it is usually the single biggest saving available.
FAQ
What does the pool running cost calculator work out?
It applies Monthly cost = units × cost per unit + fixed charge; 12-month cost compounds any growth rate you set to the values you enter for monthly pump and heater kwh, electricity price per kwh ($), monthly chemicals and servicing ($), seasonal cost escalation. Pool running cost is dominated by pump hours and heating, both of which are adjustable, which is why two identical pools can differ by hundreds a month.
How accurate is this pool running cost calculator?
A running-cost estimate. Repairs, resurfacing and winterisation are periodic costs outside the monthly figure. Replace the defaults with your own invoice, usage export, payroll data, statement, or vendor quote before making a commitment — the maths is exact, so the answer is only as good as the inputs you feed it.
Which input should I stress-test first?
pump runtime and whether it is variable speed. Re-run with a pessimistic value for it; if the decision flips, that assumption is the thing you need real data on before signing anything. After that, check heating, which can double the bill on its own and chemicals and servicing, the steady baseline.
Which scenario should I start from?
Start with the preset closest to your situation — lean month, typical month, heavy month — then edit the sliders. Presets are realistic starting points, not benchmarks to match, and every change updates the result instantly.
What should I do after running the numbers?
Switch to a variable-speed pump and cut runtime to the minimum turnover your pool needs — it is usually the single biggest saving available. A useful planning benchmark to compare against: US pools commonly cost $150–$400 a month to run, and far more if heated year-round.
Can I share or save this calculation?
Yes. Your inputs are written into the page URL, so copying the link shares the exact scenario you are looking at — the person who opens it sees the same numbers. You can also export the inputs and results to CSV or PDF from the result card and keep it with the rest of your workings.
How this calculator is built
Independently maintained
Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.
Sourced from primary data
Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.
Last editorial review
Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.
Editorial standards
See our editorial policy and disclaimer. Results are estimates, not advice.