{"product_id":"pentair-520971-intellichlor-comsys-4-commercial","title":"Pentair | 520971 | IntelliChlor COMSYS‑4 Commercial Salt Chlorine Generator System — 4 lb\/day Output for Pools Up to ~20,000 Gallons","description":"\u003cp data-start=\"154\" data-end=\"520\"\u003eThe Pentair IntelliChlor COMSYS-4 (Model 520971) is a commercial-grade salt-chlorination system designed for pools up to approximately 20,000 gallons (~13,333 US gallons in some listings). It automatically converts dissolved salt into pure chlorine, delivering consistent sanitation while reducing the need for tablet or liquid chlorine products.\u003c\/p\u003e\n\u003chr data-start=\"522\" data-end=\"525\"\u003e\n\u003cp data-start=\"527\" data-end=\"545\"\u003e\u003cstrong data-start=\"527\" data-end=\"543\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"546\" data-end=\"1629\"\u003e\n\u003cli data-start=\"546\" data-end=\"606\"\u003e\n\u003cp data-start=\"548\" data-end=\"606\"\u003eCommercial salt-chlorine generator system (Model 520971)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"607\" data-end=\"730\"\u003e\n\u003cp data-start=\"609\" data-end=\"730\"\u003eProduces up to \u003cstrong data-start=\"624\" data-end=\"663\"\u003e4 lb of chlorine per 24 hour period\u003c\/strong\u003e (via two cells: 1 P + 1 S) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"731\" data-end=\"848\"\u003e\n\u003cp data-start=\"733\" data-end=\"848\"\u003eSuitable for pools up to ~20,000 gallons capacity per manufacturer listings \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"849\" data-end=\"984\"\u003e\n\u003cp data-start=\"851\" data-end=\"984\"\u003eDual-cell configuration (one primary + one secondary) for redundancy and continuous operation \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"985\" data-end=\"1104\"\u003e\n\u003cp data-start=\"987\" data-end=\"1104\"\u003eSelf-cleaning titanium-bladed cells with commercial coating for extended life \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1105\" data-end=\"1224\"\u003e\n\u003cp data-start=\"1107\" data-end=\"1224\"\u003eBuilt-in diagnostics: cell-life tracking, salt level monitoring, data logging \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1225\" data-end=\"1369\"\u003e\n\u003cp data-start=\"1227\" data-end=\"1369\"\u003ePre-plumbed manifold and dual power centers provide simplified installation and professional readiness \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1370\" data-end=\"1511\"\u003e\n\u003cp data-start=\"1372\" data-end=\"1511\"\u003eCompatible with external ORP\/pH control systems (not included) for demand-based chlorine generation \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1512\" data-end=\"1629\"\u003e\n\u003cp data-start=\"1514\" data-end=\"1629\"\u003eListed to NSF\/ANSI 50 and UL\/CSA standards for commercial pool applications \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1631\" data-end=\"1634\"\u003e\n\u003cp data-start=\"1636\" data-end=\"1976\"\u003e\u003cstrong data-start=\"1636\" data-end=\"1656\"\u003eProduct Overview\u003c\/strong\u003e\u003cbr data-start=\"1656\" data-end=\"1659\"\u003eThe Pentair IntelliChlor COMSYS-4 (Model 520971) offers a robust sanitation solution for commercial and large residential pools requiring high output and professional control. With a 4 lb\/day chlorine output and dual-cell redundancy, this system ensures uninterrupted sanitization even if one cell requires service.\u003c\/p\u003e\n\u003cp data-start=\"1978\" data-end=\"2617\"\u003eEngineered for durability and efficiency, the system’s titanium-bladed cells deliver reliable performance in demanding environments, including high usage, salt systems, and extended run times. The pre-plumbed manifold and dual power center configuration streamline installation, while onboard diagnostics and integration with automation systems give you full visibility and control over chlorination levels. Ideal for facility managers, service professionals, and anyone needing elevated sanitation capacity, the COMSYS-4 is designed to deliver clean, safe, balanced water with minimal chemical handling and maximum operational confidence.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":51270162219320,"sku":"520971","price":5624.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/520970-img1__42411.jpg?v=1777920546","url":"https:\/\/appaetechpoolsupply.com\/products\/pentair-520971-intellichlor-comsys-4-commercial","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}