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Calculate pool maintenance cost from pool size, service level and months — see monthly and yearly cost.
Calculate pool maintenance cost from pool size, service level and months — see monthly and yearly cost.
Enter values above and click Calculate — results will appear here with the formula explained.
Pool ownership stacks four cost layers: chemicals ($30–50/month DIY), routine service ($150 weekly visits / $300 full-service monthly), opening/closing ($200–400 yearly each way in seasonal climates), and repairs plus utilities ($50–100/month electricity for pumps, more with heaters). A 20,000-gallon pool on weekly service for 6 months runs ~$900 service + $300 opening + chemicals ≈ $1,200–1,500 yearly before a single repair.
DIY versus service is a time-for-money trade with a knowledge gate: DIY costs $30–50 monthly in chemicals plus a $20 test kit and ~1 hour weekly of skimming, brushing, vacuuming and chemistry. Weekly service buys back that hour plus professional eyes that catch failing seals, scaling heaters and dying pumps early — the $120/month premium often pays for itself in one avoided repair call.
Chemistry discipline decides costs more than service tier: unbalanced pH/chlorine breeds algae blooms ($200–500 remediation), scaling damages heaters, and green pools consume 3–5× normal chemical budgets. Test weekly (strips for routine, drop kits monthly for calibration), keep chlorine 1–3 ppm, pH 7.2–7.8, alkalinity 80–120 ppm — prevention chemistry is always the cheapest chemistry.
Saltwater systems reframe the math: $1,500–2,500 upfront for the chlorinator cell (replaced every 3–7 years at $500–900) in exchange for lower ongoing chemical spend and softer water feel. Break-even versus traditional chlorine typically lands in years 2–4; cells die on schedule regardless of use, so factor replacement into any comparison.
Equipment lifecycle dominates decade costs: variable-speed pumps ($300–600, pay back via electricity in 1–2 years), filters (cartridge $200–400 every 2–3 years, DE/sand media cheaper per year), heaters ($2,000–4,000 installed, gas operating costs dwarf purchase), liners ($3,000–6,000 per 7–12 years) and covers ($100–2,000). Budget ~$1,500–2,500 yearly all-in for a mid-size pool, not the $360 of chemicals-only math.
Energy is the stealth line: single-speed pumps running 8 hours daily draw ~2,000W (~$60–100/month); variable-speed at low RPM cuts 70–80%. Solar covers and heat pumps shift the curve further. When comparing service quotes, ask what pump schedule they assume — identical service with different runtimes differs $500+/year in electricity alone.
Calculate pool maintenance cost from pool size, service level and months — see monthly and yearly cost. Formula: Monthly = DIY $30, weekly $150, full $300 plus chemicals.
Pool ownership stacks four cost layers: chemicals ($30–50/month DIY), routine service ($150 weekly visits / $300 full-service monthly), opening/closing ($200–400 yearly each way in seasonal climates), and repairs plus utilities ($50–100/month electricity for pumps, more with heaters). A 20,000-gallon pool on weekly service for 6 months runs ~$900 service + $300 opening + chemicals ≈ $1,200–1,500 yearly before a single repair.
DIY versus service is a time-for-money trade with a knowledge gate: DIY costs $30–50 monthly in chemicals plus a $20 test kit and ~1 hour weekly of skimming, brushing, vacuuming and chemistry. Weekly service buys back that hour plus professional eyes that catch failing seals, scaling heaters and dying pumps early — the $120/month premium often pays for itself in one avoided repair call.
Chemistry discipline decides costs more than service tier: unbalanced pH/chlorine breeds algae blooms ($200–500 remediation), scaling damages heaters, and green pools consume 3–5× normal chemical budgets. Test weekly (strips for routine, drop kits monthly for calibration), keep chlorine 1–3 ppm, pH 7.2–7.8, alkalinity 80–120 ppm — prevention chemistry is always the cheapest chemistry.
Saltwater systems reframe the math: $1,500–2,500 upfront for the chlorinator cell (replaced every 3–7 years at $500–900) in exchange for lower ongoing chemical spend and softer water feel. Break-even versus traditional chlorine typically lands in years 2–4; cells die on schedule regardless of use, so factor replacement into any comparison.
Equipment lifecycle dominates decade costs: variable-speed pumps ($300–600, pay back via electricity in 1–2 years), filters (cartridge $200–400 every 2–3 years, DE/sand media cheaper per year), heaters ($2,000–4,000 installed, gas operating costs dwarf purchase), liners ($3,000–6,000 per 7–12 years) and covers ($100–2,000). Budget ~$1,500–2,500 yearly all-in for a mid-size pool, not the $360 of chemicals-only math.
Energy is the stealth line: single-speed pumps running 8 hours daily draw ~2,000W (~$60–100/month); variable-speed at low RPM cuts 70–80%. Solar covers and heat pumps shift the curve further. When comparing service quotes, ask what pump schedule they assume — identical service with different runtimes differs $500+/year in electricity alone.
With 20k gallons, weekly service $150/mo over 6 months: $900 service + $300 opening = $1,200 base, plus ~$200 electricity delta and consumables ≈ $1,500 realistic yearly. DIY at $30×6 ($180) + $300 opening = $480 plus ~50 hours of your labor.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
Last reviewed: September 2026 · Report an error