{"product_id":"hayward-aquanaut-400-4-wheel-drive-suction-pool-cleaner","title":"Hayward AquaNaut 400 4-Wheel Drive Suction Pool Cleaner","description":"\u003c!-- more --\u003e\n\u003cstyle\u003e\n  .product-description {\n    color: inherit;\n    line-height: 1.75;\n    max-width: 860px;\n  }\n  .product-description h2 {\n    font-size: 1.2rem;\n    font-weight: 700;\n    margin: 2rem 0 0.6rem;\n    border-bottom: 2px solid #cce0ff;\n    padding-bottom: 0.3rem;\n  }\n  .product-description h3 {\n    font-size: 1rem;\n    font-weight: 700;\n    margin: 1.5rem 0 0.4rem;\n  }\n  .product-description p {\n    margin: 0 0 1rem;\n  }\n  .product-description ul {\n    margin: 0 0 1rem 1.4rem;\n    padding: 0;\n  }\n  .product-description ul li {\n    margin-bottom: 0.4rem;\n  }\n  .product-description .spec-list {\n    margin: 1rem 0 1.5rem;\n    font-size: 0.95rem;\n    border: 1px solid #c4d9f0;\n    border-radius: 4px;\n    overflow: hidden;\n  }\n  .product-description .spec-row {\n    display: flex;\n    flex-wrap: wrap;\n    border-bottom: 1px solid #c4d9f0;\n  }\n  .product-description .spec-row:last-child {\n    border-bottom: none;\n  }\n  .product-description .spec-key {\n    flex: 0 0 38%;\n    background-color: #e8f1fb;\n    font-weight: 700;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-val {\n    flex: 1 1 62%;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-row:nth-child(even) .spec-val {\n    background-color: #f5f9ff;\n  }\n  .product-description .spec-row:nth-child(even) .spec-key {\n    background-color: #edf4fc;\n  }\n  @media (max-width: 540px) {\n    .product-description .spec-key,\n    .product-description .spec-val {\n      flex: 0 0 100%;\n    }\n    .product-description .spec-key {\n      padding-bottom: 0.2rem;\n    }\n    .product-description .spec-val {\n      padding-top: 0.2rem;\n    }\n  }\n  .product-description .doc-links {\n    background-color: #f0f6ff;\n    border-left: 4px solid #0066cc;\n    padding: 0.75rem 1rem;\n    margin: 1.5rem 0;\n    border-radius: 0 4px 4px 0;\n  }\n  .product-description .doc-links h2 {\n    border-bottom: none;\n    margin: 0 0 0.4rem;\n    font-size: 1rem;\n    padding-bottom: 0;\n  }\n  .product-description .doc-links ul {\n    margin: 0 0 0 1.2rem;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"product-description\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n  \u003cmeta itemprop=\"name\" content=\"Hayward AquaNaut 400 4-Wheel Drive Suction Pool Cleaner\"\u003e\n  \u003cmeta itemprop=\"brand\" content=\"Hayward\"\u003e\n  \u003cmeta itemprop=\"model\" content=\"AquaNaut 400\"\u003e\n  \u003cmeta itemprop=\"category\" content=\"Automatic Pool Cleaner\"\u003e\n  \u003cmeta itemprop=\"sku\" content=\"W3PHS41CST\"\u003e\n\n  \u003cp itemprop=\"description\"\u003eHayward AquaNaut 400 (W3PHS41CST) is a 4-wheel drive suction automatic pool cleaner for inground pools up to 20 x 40 ft, including pools with deep ends. Patented V-Flex variable vane turbine eliminates clogs and maximizes power at virtually any flow. Multiple pre-programmed steering sequences cover floors, walls, and coves. Requires 1\/2 HP pump or 35 GPM minimum. No booster pump required. Includes 40 ft of hose.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eSKU: W3PHS41CST\u003c\/li\u003e\n    \u003cli\u003e2-year limited warranty (parts)\u003c\/li\u003e\n    \u003cli\u003eCleans pools up to 20 x 40 ft, including pools with deep ends\u003c\/li\u003e\n    \u003cli\u003e4-wheel drive; maintains maximum power and balance in larger pools and pools with deep ends\u003c\/li\u003e\n    \u003cli\u003ePatented V-Flex variable vane turbine: vanes self-adjust to allow large debris passage and maximize suction power at virtually any flow; ideal for use with variable-speed pumps\u003c\/li\u003e\n    \u003cli\u003eMultiple pre-programmed internal steering sequences for complete coverage of floors, walls, and coves; turns every 11 to 14 ft\u003c\/li\u003e\n    \u003cli\u003ePatented robust tire treads for superior climbing power and obstacle maneuverability\u003c\/li\u003e\n    \u003cli\u003ePatented adjustable roller skirt maintains optimal suction on uneven surfaces and around obstacles\u003c\/li\u003e\n    \u003cli\u003eThree interchangeable throats for optimized suction at different flow rates and variable-speed pump compatibility\u003c\/li\u003e\n    \u003cli\u003eConnects to dedicated suction port or skimmer; no booster pump or separate electrical connection required\u003c\/li\u003e\n    \u003cli\u003eMinimum pump size: 1\/2 HP or 35 GPM\u003c\/li\u003e\n    \u003cli\u003eIncludes 40 ft of hose\u003c\/li\u003e\n    \u003cli\u003eWeight: 19 lbs\u003c\/li\u003e\n    \u003cli\u003eCompatible with concrete, gunite, vinyl, fiberglass, tile, and pebble pool surfaces (optional tape tires may be required for smoother fiberglass and tile surfaces)\u003c\/li\u003e\n    \u003cli\u003eNote: wall climbing capability may be affected by specific pool shapes and surfaces; the cleaner may not climb the wall under all conditions\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHayward AquaNaut 400 Automatic Pool Cleaner: 4-Wheel Drive and V-Flex Turbine for Larger Inground Pools\u003c\/h2\u003e\n  \u003cp\u003eThe AquaNaut 400 is Hayward's 4-wheel drive suction cleaner for larger inground pools and pools with deep ends. All four wheels are driven simultaneously by the patented V-Flex turbine, which self-adjusts to allow large debris passage and maintain maximum suction power at virtually any pump flow rate, including variable-speed pump speeds. Multiple pre-programmed internal steering sequences ensure thorough coverage of floors, walls, and coves without the owner needing to intervene. Three interchangeable throats allow further optimization for different pump sizes and speeds. No booster pump required. The cleaner connects to the existing pool pump through the dedicated suction port or skimmer.\u003c\/p\u003e\n\n  \u003ch2\u003eAquaNaut 400 vs. AquaNaut 200: When the 4-Wheel Version Is the Right Choice\u003c\/h2\u003e\n  \u003cp\u003eThe AquaNaut 200 is designed for average-sized pools up to 16 x 32 ft. The AquaNaut 400 is built for larger pools up to 20 x 40 ft and pools with deep ends, where 4-wheel drive provides the extra traction and balance needed to pull the longer hose and maintain consistent performance across the full pool. Both share V-Flex turbine technology, pre-programmed steering, robust tire treads, adjustable roller skirt, and three interchangeable throats. The 4-wheel drive earns its additional cost in larger pools and pools with deep ends that challenge 2-wheel traction.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward AquaNaut 400 Suction Pool Cleaner Specifications\u003c\/h2\u003e\n  \u003cdiv class=\"spec-list\"\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSKU\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eW3PHS41CST\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCleaner Type\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e4-wheel drive suction-side automatic pool cleaner\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003ePool Size\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eUp to 20 x 40 ft, including pools with deep ends\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eDrive System\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e4-wheel drive; all wheels powered simultaneously\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eTurbine\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003ePatented V-Flex variable vane; self-adjusting for large debris passage; maximum power at virtually any flow\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSteering\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eMultiple pre-programmed internal steering sequences; turns every 11 to 14 ft; covers floors, walls, and coves\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eTraction\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003ePatented robust tire treads; superior climbing power and obstacle maneuverability\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eRoller Skirt\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003ePatented adjustable roller skirt; maintains optimal suction on uneven surfaces\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eThroats\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e3 interchangeable throats for variable-speed pump compatibility and debris passage optimization\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003ePower Source\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eExisting pool pump; no booster pump required\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eMinimum Pump Size\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e1\/2 HP or 35 GPM\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eConnection Point\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eDedicated suction port or skimmer\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eIncluded Hose\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e40 ft (11 sectional hoses)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e19 lbs\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCompatible Surfaces\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eConcrete, gunite, vinyl, fiberglass, tile, pebble (optional tape tires may be required for smoother fiberglass and tile surfaces)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eWall Climbing Note\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eWall climbing capability may be affected by specific pool shapes and surfaces; cleaner may not climb walls under all conditions\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eDebris Handling\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003ePasses directly to pump basket and filter; no onboard bag required\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e2-year limited warranty (parts)\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHayward AquaNaut 400 Frequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eWhat is the practical difference between the AquaNaut 400 and the AquaNaut 200?\u003c\/h3\u003e\n  \u003cp\u003eThe AquaNaut 200 is designed for average-sized pools up to 16 x 32 ft. The AquaNaut 400 is built for larger pools up to 20 x 40 ft and pools with deep ends, where 4-wheel drive provides the extra traction and balance needed to maintain consistent performance with the longer 40 ft hose. Both share the same V-Flex turbine, pre-programmed steering, tire treads, roller skirt, and three interchangeable throats.\u003c\/p\u003e\n\n  \u003ch3\u003eWill the AquaNaut 400 climb pool walls?\u003c\/h3\u003e\n  \u003cp\u003eThe AquaNaut 400 is designed to cover floors, walls, and coves. However, wall climbing capability may be affected by specific pool shapes and surfaces, and the cleaner may not climb walls under all conditions. Performance on smooth fiberglass or steep wall sections may require optional tape tires for best results.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes the AquaNaut 400 work with variable-speed pumps?\u003c\/h3\u003e\n  \u003cp\u003eYes. The V-Flex variable vane turbine is specifically designed to maximize suction power at virtually any flow rate, making it well suited for variable-speed pump installations. The three interchangeable throats allow further optimization for different pump speeds.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat surfaces is the AquaNaut 400 compatible with?\u003c\/h3\u003e\n  \u003cp\u003eConcrete, gunite, vinyl, fiberglass, tile, and pebble. Optional tape tires may be required for smoother fiberglass and tile surfaces to maintain optimal traction.\u003c\/p\u003e\n\n  \u003ch3\u003eMy AquaNaut 400 climbs part way up the wall but does not reach the waterline. What should I check?\u003c\/h3\u003e\n  \u003cp\u003eFirst confirm all four wheels are turning at consistent speed and that the pump is running at or above the 1\/2 HP or 35 GPM minimum. Inspect the wheel treads for wear — a worn tread on one side creates a traction imbalance that limits climb height. Confirm no hose sections are kinked. If the pool surface is smooth fiberglass or tile, optional tape tires may improve wall traction.\u003c\/p\u003e\n\n  \u003cdiv class=\"doc-links\" role=\"complementary\" aria-label=\"Hayward AquaNaut 400 4-Wheel Drive Suction Pool Cleaner Manual and Warranty Info\"\u003e\n    \u003ch2\u003eHayward AquaNaut 400 4-Wheel Drive Suction Pool Cleaner Manual and Warranty Info\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-aquanaut-400-owners-manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003eOwner's Manual \u0026amp; Installation Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-aquanaut-400-flow-adjustment-setup-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eThroat Selection \u0026amp; Hose Configuration Setup Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-aquanaut-400-parts-diagram.pdf\" target=\"_blank\" rel=\"noopener\"\u003eIllustrated Parts Diagram \u0026amp; 4-Wheel Drive Replacement Reference (PDF)\u003c\/a\u003e\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\/\",\n    \"@type\": \"Product\",\n    \"name\": \"Hayward AquaNaut 400 4-Wheel Drive Suction Pool Cleaner\",\n    \"brand\": { \"@type\": \"Brand\", \"name\": \"Hayward\" },\n    \"model\": \"AquaNaut 400\",\n    \"description\": \"4-wheel drive suction automatic pool cleaner for inground pools up to 20 x 40 ft. SKU W3PHS41CST. Patented V-Flex variable vane turbine; multiple pre-programmed steering sequences for floors, walls, and coves; patented robust tire treads; adjustable roller skirt; 3 interchangeable throats for variable-speed pump compatibility. Includes 40 ft hose. Minimum 1\/2 HP or 35 GPM pump required. No booster pump. 2-year limited warranty (parts).\",\n    \"sku\": \"W3PHS41CST\",\n    \"category\": \"Automatic Pool Cleaner\",\n    \"offers\": {\n      \"@type\": \"Offer\",\n      \"availability\": \"https:\/\/schema.org\/InStock\",\n      \"priceCurrency\": \"USD\",\n      \"seller\": { \"@type\": \"Organization\", \"name\": \"Your Store Name\" }\n    }\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48566963044569,"sku":"W3PHS41CST","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/3592\/7513\/files\/Hayward-AquaNaut-400-4-Wheel-Drive-Suction-Pool-Cleaner-Automatic-Pool-Cleaner.jpg?v=1777076467","url":"https:\/\/nonstopswim.com\/products\/hayward-aquanaut-400-4-wheel-drive-suction-pool-cleaner","provider":"Nonstop Swim","version":"1.0","type":"link"}