Watts OneFlow Plus System (OFPSYS) - Salt-Free Scale Prevention and Water Filtration System

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.spec-card .sc-value{font-size:20px !important;font-weight:600;color:var(--deep);margin-bottom:4px;} .ro-wrap .spec-card .sc-note{font-size:15px !important;color:var(--muted);} @media(max-width:640px){ .ro-wrap .ro-hero{padding:36px 24px 32px;} .ro-wrap .ro-section{padding:28px 20px;} .ro-wrap .ro-feature-grid,.ro-wrap .faucet-grid,.ro-wrap .filter-schedule,.ro-wrap .spec-cards{grid-template-columns:1fr;} .ro-wrap .benefits-strip{flex-direction:column;} .ro-wrap .benefit-item{border-right:none;border-bottom:1px solid rgba(255,255,255,.1);} } /* ── Nuclear override — force all text inside ro-wrap to be readable ── */ .ro-wrap p, .ro-wrap li, .ro-wrap td, .ro-wrap th, .ro-wrap .ro-section > p { font-size: 18px !important; line-height: 1.6 !important; } .ro-wrap .ro-section > p, .ro-wrap .ro-callout p, .ro-wrap .stage-body p, .ro-wrap .ro-feature-card p, .ro-wrap .schedule-card p, .ro-wrap .faucet-card p, .ro-wrap .spec-card .sc-note, .ro-wrap .pro-tip p { font-size: 18px !important; line-height: 1.6 !important; } .ro-wrap h2 { font-size: clamp(26px,4vw,40px) !important; line-height:1.15 !important; } .ro-wrap h3 { font-size: 20px !important; line-height:1.3 !important; } .ro-wrap h4 { font-size: 18px !important; line-height:1.3 !important; } .ro-wrap .ro-label, .ro-wrap .stage-tag, .ro-wrap .sc-label { font-size: 14px !important; } .ro-wrap .ro-title { font-size: 24px !important; } .ro-wrap .interval { font-size: 22px !important; } .ro-wrap .stage-num { font-size: 16px !important; } .ro-wrap .ro-eyebrow { font-size: 14px !important; } .ro-wrap .ro-badge { font-size: 15px !important; } Watts Water · Whole Home Scale Prevention & Filtration Watts OneFlow Plus System (OFPSYS) Salt-free scale prevention with carbon filtration. Template-Assisted Crystallization technology protects plumbing while removing chlorine taste, odor, and sediment—no salt, no electricity, no wastewater. 10 GPM Flow Rate 20 Micron Carbon Block 3-Year Cartridge Life Salt-Free TAC WHY IT WORKS Two technologies in one compact system 🔬 Template-Assisted Crystallization TAC technology converts dissolved hardness minerals into microscopic crystals that stay suspended in water rather than forming scale on pipes and appliances. No salt exchange required. 🧪 Carbon Block Filtration 20-micron carbon block removes chlorine taste and odor while capturing sediment throughout your entire home. Cleaner water from every tap without the maintenance of traditional softeners. 🌱 Zero Waste Operation No backwashing, no brine discharge, no electricity consumption. The Watts OneFlow Plus System (OFPSYS) operates passively, reducing environmental impact while saving on operating costs. 🔧 Flexible Installation Designed for floor-standing or wall-mounted configuration. Compact footprint integrates with residential plumbing while maintaining full 10 GPM flow rate for household demand. SPECIFICATIONS Watts OneFlow Plus System (OFPSYS) · Model 7100638 Model Number 7100638 Maximum Flow Rate 10 GPM Maximum Temperature 100°F System Type Residential Combo – Scale Prevention & Filtration Installation Floor-standing or wall-mounted Cartridge Lifespan Up to 3 years Filtration Micron 20 micron carbon block Scale Prevention Template-Assisted Crystallization (TAC) MAINTENANCE Replacement schedule for the Watts OneFlow Plus System Every 3 Years OneFlow Plus Combo Cartridge Pack Replace both the TAC scale prevention cartridge and carbon block filter together. Combo pack ensures continued scale protection and chlorine reduction throughout the system's full capacity. Every 1-2 Years Carbon Block Cartridge Only If chlorine taste or odor returns before the 3-year mark, replace just the carbon block filter. The TAC cartridge can continue operating independently until full service interval. 💧 Minerals Remain TAC prevents scale without removing beneficial minerals. Water retains calcium and magnesium for taste and health. 💰 Lower Operating Cost No salt purchases, no electricity consumption, no wastewater surcharges. Set and forget for years of passive operation. ⚙️ Appliance Protection Scale prevention extends the life of water heaters, dishwashers, and fixtures while maintaining flow efficiency throughout plumbing. 🏡 Whole Home Coverage 10 GPM flow rate supports simultaneous use across multiple fixtures without pressure drop or performance loss. Show more