Pool Maintenance Cost Estimator
Estimate your annual swimming pool maintenance costs based on pool size, equipment, and local utility rates. This calculator covers chemical treatments, pump electricity, water top-off, routine equipment replacement, and optional professional service fees — giving you a comprehensive picture of true ownership costs.
Formulas Used
1. Electricity Cost
kWh/day = (HP × 0.746) ÷ motor_efficiency (0.85) × hours/day
Annual Cost = kWh/day × 365 × $/kWh
2. Chemical Cost
Annual Cost = (Pool Volume ÷ 1,000) × chemical_rate × 12 months
Rates: Chlorine $1.00, Saltwater $0.60, Mineral/Ozone $0.75 per 1,000 gal/month
3. Water Replacement Cost
Surface Area (ft²) = Pool Volume ÷ 5 ft avg depth
Annual Loss (gal) = SA × 1.5 in/wk × 0.6234 gal/ft²/in × 52 wks × 1.10 (backwash)
Annual Cost = (Annual Loss ÷ 1,000) × $/1,000 gal
4. Equipment Depreciation
Annual Cost = Σ (Replacement Cost ÷ Lifespan) × Age Factor
Age Factor = min(1 + equipment_age ÷ 20, 1.5)
5. Service Cost
Annual Cost = Number of Visits × Cost per Visit
6. Total Annual Cost
Total = Electricity + Chemicals + Water + Equipment + Service + Miscellaneous