Pool Maintenance Cost Per Month
Reviewed April 2026
Pump electricity is your biggest pool expense, usually more than all chemicals combined. A variable-speed pump typically pays back in 12–18 months (per DOE ENERGY STAR pump efficiency data) and saves $200–$500/year every year after that.
Calculate pump costEnter your pump wattage and electricity rate. See your real annual cost and VS pump savings.
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Cost-cutting essentials
- Solar pool cover (cuts heating and evaporation cost): Check price on Amazon →
- Taylor K-2006 test kit (saves money vs guess-dosing): Check price on Amazon →
- Variable-speed pump (biggest single savings): Check price on Amazon →
- Mechanical or digital pool timer: Check price on Amazon →
Cost Breakdown by Category
| Category | Monthly | Annual |
|---|---|---|
| Chemicals | $30–$60 | $360–$720 |
| Pump electricity (single-speed) | $40–$80 | $480–$960 |
| Pump electricity (variable-speed) | $10–$20 | $120–$240 |
| Water (evaporation + backwash) | $10–$20 | $120–$240 |
| Filter media | $5 | $60 |
| Professional service (optional) | $80–$150 | $960–$1,800 |
Estimates for a 15,000-gallon in-ground pool. @ $0.15/kWh national average (DOE 2023).
The Electricity Gap: Single-Speed vs. Variable-Speed
In our view, the most actionable cost reduction in pool ownership, and the one DOE ENERGY STAR has been quietly making mandatory, is replacing a single-speed pump with a variable-speed pump. The math is straightforward:
- A 1.5 HP single-speed pump at full load: ~1,125 watts
- Running 8 hours/day for 7 months: 1.125 × 8 × 210 days = 1,890 kWh/year
- At $0.15/kWh: $284/year (mild climate) to $630/year (year-round use)
- A variable-speed pump doing the same filtration at 1,800 RPM: ~200–300 watts
- Same filtration, 75% less electricity: savings of $200–$500/year
Under the DOE ENERGY STAR Pool Pump Rule (effective July 2021), all newly manufactured single-speed pool pumps rated 1 HP or above must meet efficiency standards equivalent to a variable-speed pump. Variable-speed pumps are now the default choice.
Calculate Your Exact Pump Cost
Plug in your wattage and rate to see annual operating cost, plus the savings from upgrading to variable-speed.
Run the Numbers →Frequently Asked Questions
How much does pool maintenance cost per month?
For a 15,000-gallon in-ground pool, expect $80–$150/month in-season (chemicals + electricity). The biggest variable is pump electricity: a single-speed 1.5 HP pump running 8 hours/day costs $600–$900/year. A variable-speed pump costs $150–$250/year for the same filtration.
How much does it cost to run a pool pump?
A 1.5 HP single-speed pool pump (1,125 watts) running 8 hours/day at $0.15/kWh costs roughly $494/year. A variable-speed pump doing the same filtration at lower RPM costs $120–$150/year, a $350/year savings.
What is the biggest pool operating expense?
For most pool owners, pump electricity is the largest operating expense, larger than chemicals. A single-speed pump can cost $600–$1,200/year to operate. Upgrading to a variable-speed pump typically pays back in 1–2 seasons.
How to Cut Each Cost
Cut chemical costs
The biggest chemical waste is guessing on doses. Over-shocking wastes shock and the acid you need to bring pH back down. Use our calculators for exact doses every time: shock, chlorine, pH, alkalinity (TA).
Cut electricity costs
A variable-speed pump saves $200–$500/year, the single biggest cost reduction available. Read the full VS pump guide for the ROI math and pump recommendations.
Cut water costs
A solar pool cover reduces evaporation by 95% and also retains heat. For a 15,000-gallon pool in a dry climate, a cover can save $200+/year in water alone. Solar covers on Amazon →
Next Step: See Your Actual Pump Cost
Pump electricity is usually the biggest line item. Plug in your specs and electricity rate to see your real annual cost, and what a VS pump would save.
See Your Pump Cost →Related Guides
Variable Speed Pump Savings
The ROI math on VS pumps. Most pay back in 12–18 months
Pool Chemistry Basics
Understanding chemistry = fewer wasted chemicals
Saltwater Pool Startup
SWG eliminates liquid chlorine cost but adds cell replacement
Above-Ground Pool Chemicals
Smaller pool = lower chemical costs, but filtration matters more