{"product_id":"sentry-h2o-whole-house-water-filtration-under-sink-system","title":"Sentry H2O Whole House Water Filtration \u0026 Under-Sink System","description":"\u003cdiv class=\"pf-product pf-product--water-filtration\"\u003e\n\u003cp class=\"pf-product__intro\"\u003eCoordinate whole-house filtration and a dedicated drinking-water setup in one configurable package. The Sentry H2O Whole House Water Filtration \u0026amp; Under-Sink System pairs the Sentry whole-house unit with your choice of a DualGuard two-filter or TriGuard three-filter under-sink system. Select the connection type for your installation and choose optional VIQUA UV equipment if recommended for your water supply.\u003c\/p\u003e\n\u003csection class=\"pf-section pf-section--benefits\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--check\"\u003eWhy Customers Choose This Product\u003c\/h2\u003e\n\u003cul class=\"pf-list pf-list--benefits\"\u003e\n\u003cli class=\"pf-icon-ready pf-icon--home\"\u003eWhole-house filtration paired with a dedicated under-sink system.\u003c\/li\u003e\n\u003cli class=\"pf-icon-ready pf-icon--filter\"\u003eChoice of DualGuard two-filter or TriGuard three-filter configuration.\u003c\/li\u003e\n\u003cli class=\"pf-icon-ready pf-icon--connection\"\u003eConnection options for under-sink, refrigerator, or direct RO replacement setups.\u003c\/li\u003e\n\u003cli class=\"pf-icon-ready pf-icon--options\"\u003eOptional VIQUA UV configurations.\u003c\/li\u003e\n\u003cli class=\"pf-icon-ready pf-icon--maintenance\"\u003eThree Whole Home Revitalizer kits included in the described package.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"pf-section pf-section--highlights\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--highlights\"\u003eProduct Highlights\u003c\/h2\u003e\n\u003ch3 class=\"pf-subheading pf-icon-ready pf-icon--home\"\u003eTreatment at Two Locations\u003c\/h3\u003e\n\u003cp\u003eThe whole-house unit treats water at the home's incoming supply, while the separate under-sink system provides an additional treatment location. This lets you plan filtration for everyday household use alongside your drinking-water connection.\u003c\/p\u003e\n\u003ch3 class=\"pf-subheading pf-icon-ready pf-icon--filter\"\u003eChoose Your Under-Sink System\u003c\/h3\u003e\n\u003cp\u003eSelect the DualGuard two-filter system or the TriGuard three-filter system. Confirm each configuration's filter media, documented performance, and replacement requirements before choosing.\u003c\/p\u003e\n\u003ch3 class=\"pf-subheading pf-icon-ready pf-icon--connection\"\u003eMatch Your Connection\u003c\/h3\u003e\n\u003cp\u003eChoose 3\/8-inch fittings for the under-sink connection or 1\/4-inch fittings for the refrigerator connection. The direct RO replacement option lists 1\/4-inch fittings, a faucet, and a redirect valve; verify compatibility with your existing installation.\u003c\/p\u003e\n\u003ch3 class=\"pf-subheading pf-icon-ready pf-icon--options\"\u003eOptional UV Equipment\u003c\/h3\u003e\n\u003cp\u003eSelect no UV system, a VIQUA VH200 listed at 9 GPM, or a VIQUA VH410 listed at 18 GPM. UV suitability and performance depend on feed-water conditions, installation, maintenance, and the specific manufacturer's requirements.\u003c\/p\u003e\n\u003ch3 class=\"pf-subheading pf-icon-ready pf-icon--maintenance\"\u003eMaintenance Supplies Included\u003c\/h3\u003e\n\u003cp\u003eThe described package includes three Whole Home Revitalizer kits. Use them according to the manufacturer's instructions, and confirm the separate servicing needs of the whole-house, under-sink, and any selected UV components.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"pf-section pf-section--specifications\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--specifications\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdl class=\"pf-spec-list\"\u003e\n\u003cdt\u003eBrand\u003c\/dt\u003e\n\u003cdd\u003eSentry H2O\u003c\/dd\u003e\n\u003cdt\u003eSystem arrangement\u003c\/dt\u003e\n\u003cdd\u003eWhole-house filtration with a separate under-sink system\u003c\/dd\u003e\n\u003cdt\u003eUnder-sink system options\u003c\/dt\u003e\n\u003cdd\u003eDualGuard two-filter system or TriGuard three-filter system\u003c\/dd\u003e\n\u003cdt\u003eUnder-sink connection\u003c\/dt\u003e\n\u003cdd\u003e3\/8-inch fittings\u003c\/dd\u003e\n\u003cdt\u003eRefrigerator connection\u003c\/dt\u003e\n\u003cdd\u003e1\/4-inch fittings\u003c\/dd\u003e\n\u003cdt\u003eDirect RO replacement connection\u003c\/dt\u003e\n\u003cdd\u003e1\/4-inch fittings with faucet and redirect valve\u003c\/dd\u003e\n\u003cdt\u003eUV options\u003c\/dt\u003e\n\u003cdd\u003eNo UV system; VIQUA VH200, listed at 9 GPM; or VIQUA VH410, listed at 18 GPM\u003c\/dd\u003e\n\u003cdt\u003eIncluded maintenance supplies\u003c\/dt\u003e\n\u003cdd\u003eThree Whole Home Revitalizer kits\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp class=\"pf-note\"\u003eThe listed UV flow ratings apply to the UV options, not to the complete filtration package. Confirm overall service flow, dimensions, pressure limits, filter capacity, and any electrical requirements for your selected configuration before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"pf-section pf-section--ideal-for\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--home\"\u003eIdeal For\u003c\/h2\u003e\n\u003cul class=\"pf-list pf-list--applications\"\u003e\n\u003cli\u003eHomeowners planning whole-house filtration with a separate drinking-water treatment point.\u003c\/li\u003e\n\u003cli\u003eBuyers comparing two-filter and three-filter under-sink configurations.\u003c\/li\u003e\n\u003cli\u003eHouseholds that need a specific under-sink, refrigerator, or RO replacement connection.\u003c\/li\u003e\n\u003cli\u003eInstallations where a water-treatment professional recommends evaluating optional UV equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"pf-section pf-section--important\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--information\"\u003eImportant Information\u003c\/h2\u003e\n\u003cul class=\"pf-list pf-list--care\"\u003e\n\u003cli\u003eReview a current water analysis with a qualified water-treatment professional before selecting equipment. Match the system to your water supply, treatment goals, household demand, and installation conditions.\u003c\/li\u003e\n\u003cli\u003eSpecific reductions of PFAS, fluoride, arsenic, chlorine, or other substances should be confirmed through performance documentation for the exact configuration. No universal removal percentage or contaminant-free water guarantee is stated here.\u003c\/li\u003e\n\u003cli\u003eDo not assume filtration provides water softening, prevents scale, or extends appliance life. Confirm any hardness-treatment capability separately.\u003c\/li\u003e\n\u003cli\u003eHave a qualified installer confirm plumbing compatibility, available space, service flow, pressure limits, and any electrical requirements. Follow the manufacturer's instructions and applicable local requirements.\u003c\/li\u003e\n\u003cli\u003eOptional UV equipment requires appropriate water conditions and maintenance. Do not assume this package makes microbiologically unsafe or untested water safe; obtain professional guidance and verify treated-water quality.\u003c\/li\u003e\n\u003cli\u003eReplace filters and maintain each component according to its manufacturer's instructions. Service intervals depend on water quality and usage.\u003c\/li\u003e\n\u003cli\u003eNo health benefits, guaranteed mineral levels, fixed alkalinity, or certification claims are made in this description.\u003c\/li\u003e\n\u003cli\u003eWhole House System returns are subject to a 25% restocking fee, as stated in the existing product information. Review the store's current return policy before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"pf-section pf-section--faq\"\u003e\n\u003ch2 class=\"pf-heading pf-icon-ready pf-icon--question\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"pf-faq\"\u003e\u003csummary class=\"pf-faq__question pf-icon-ready pf-icon--plus\"\u003eWhat is included in the package?\u003c\/summary\u003e\u003cdiv class=\"pf-faq__answer\"\u003e\u003cp\u003eThe described package includes the Sentry whole-house system, your selected DualGuard or TriGuard under-sink system, and three Whole Home Revitalizer kits. UV equipment is included only if you select a UV configuration. Connection components depend on the option selected.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pf-faq\"\u003e\u003csummary class=\"pf-faq__question pf-icon-ready pf-icon--plus\"\u003eWhat is the difference between DualGuard and TriGuard?\u003c\/summary\u003e\u003cdiv class=\"pf-faq__answer\"\u003e\u003cp\u003eDualGuard is the two-filter under-sink option, and TriGuard is the three-filter option. Confirm the filter media, documented treatment performance, and maintenance requirements of each before choosing.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pf-faq\"\u003e\u003csummary class=\"pf-faq__question pf-icon-ready pf-icon--plus\"\u003eWhich connection options are available?\u003c\/summary\u003e\u003cdiv class=\"pf-faq__answer\"\u003e\u003cp\u003eThe options are an under-sink connection with 3\/8-inch fittings, a refrigerator connection with 1\/4-inch fittings, or a direct RO replacement connection with 1\/4-inch fittings, a faucet, and a redirect valve. Have an installer verify compatibility with your plumbing.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pf-faq\"\u003e\u003csummary class=\"pf-faq__question pf-icon-ready pf-icon--plus\"\u003eIs UV equipment included as standard?\u003c\/summary\u003e\u003cdiv class=\"pf-faq__answer\"\u003e\u003cp\u003eNo. Choose no UV system, the VIQUA VH200 listed at 9 GPM, or the VIQUA VH410 listed at 18 GPM. Ask a qualified water-treatment professional to confirm suitability for your water conditions and required flow.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"pf-faq\"\u003e\u003csummary class=\"pf-faq__question pf-icon-ready pf-icon--plus\"\u003eDoes this system replace a water softener?\u003c\/summary\u003e\u003cdiv class=\"pf-faq__answer\"\u003e\u003cp\u003eDo not assume it replaces a water softener. Confirm any hardness-treatment capability with the manufacturer and use water-test results to determine whether separate softening equipment is needed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003cp class=\"pf-product__closing\"\u003eChoose the under-sink configuration and connection type that fit your home, then confirm the system requirements against your water analysis. With those details in place, this Sentry H2O package offers a coordinated starting point for whole-house and drinking-water filtration.\u003c\/p\u003e\n\u003cp class=\"pf-product__disclaimer\" style=\"text-align: center; font-size: 0.85em;\"\u003eThis water-treatment product is not intended to diagnose, treat, cure, or prevent disease. Treatment performance varies; verify water quality through appropriate testing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is included in the package?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The described package includes the Sentry whole-house system, your selected DualGuard or TriGuard under-sink system, and three Whole Home Revitalizer kits. UV equipment is included only if you select a UV configuration. Connection components depend on the option selected.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between DualGuard and TriGuard?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"DualGuard is the two-filter under-sink option, and TriGuard is the three-filter option. 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