{"product_id":"jxi400ns-jandy-jxi-400-btu-pool-spa-natural-asme-cuni-heater","title":"JXI400NS | Jandy JXi 400 BTU Pool \u0026 Spa Natural ASME CUNI Heater","description":"\u003cp data-start=\"282\" data-end=\"673\" class=\"\"\u003eThe Jandy JXi 400NS ASME Cupronickel Pool \u0026amp; Spa Heater delivers exceptional 399,000 BTU heating performance with 84% thermal efficiency, designed to meet the rigorous demands of both commercial and residential applications. Featuring a robust cupronickel heat exchanger and corrosion-resistant bronze headers, this heater ensures long-lasting durability, even in aggressive water conditions.\u003c\/p\u003e\n\u003cp data-start=\"675\" data-end=\"1074\" class=\"\"\u003eIts compact footprint and lightweight construction (approximately 168 lbs) make installation easy, whether for new builds or retrofits. The JXi 400NS is automation-ready, seamlessly integrating with Jandy’s AquaLink® systems for remote control via the iAquaLink® app. With its 180° rotatable top and flip-up electrical panel, it offers unmatched installation flexibility and easy maintenance access.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 30px; flex-wrap: wrap;\"\u003e\n\u003c!-- Left Side: Image --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\u003cimg style=\"width: 100%; max-width: 600px; border-radius: 12px;\" alt=\"Product Image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/JXI400NC_Jandy_JXi_400_BTU_Pool_Spa_Natural_ASME_Heater_Banner_1.jpg?v=1745686068\"\u003e\u003c\/div\u003e\n\n\u003c!-- Right Side: Text --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\n\u003ch2 style=\"data-start=464\" data-end=\"478\"\u003e\u003cstrong\u003eEnergy-Efficient Heating\n\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp style=\"font-size: 18px; line-height: 1.6;\"\u003e84% thermal efficiency rating and low-NOX design surpasses strict DOE Energy Efficiency requirements\n\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n\u003c!-- Left Side: Text --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px; font-size: 18px; line-height: 1.6;\"\u003e\n\u003ch2 data-end=\"478\" data-start=\"464\"\u003e\u003cstrong\u003eCommercial Grade Models \u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSmall but strong enough to handle the rigors of non-residential use, ASME compliant JXiQ heaters feature burly bronze headers and 30%1 thicker-walled, robust cupronickel heat exchanger tubes and corrosion-resistant bronze headers to meet the high stresses of commercial installations. Plumbing flexibility for quick MasterTemp® and Max-E Therm® replacement that requires no plumbing adjustments\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Right Side: Big Image --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/JXI400NC_Jandy_JXi_400_BTU_Pool_Spa_Natural_ASME_Heater_Banner_3.jpg?v=1745686068\" alt=\"Product Image\" style=\"width: 100%; max-width: 1000px; height: auto; border-radius: 10px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 30px; flex-wrap: wrap;\"\u003e\n\u003c!-- Left Side: Image --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\u003cimg style=\"width: 100%; max-width: 600px; border-radius: 12px;\" alt=\"Product Image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/JXI400NC_Jandy_JXi_400_BTU_Pool_Spa_Natural_ASME_Heater_Banner_2.jpg?v=1745686066\"\u003e\u003c\/div\u003e\n\u003c!-- Right Side: Text --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\n\u003ch2 data-end=\"478\"\u003e\u003cstrong\u003eUltra-Compact Lightweight Design\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp style=\"font-size: 18px; line-height: 1.6;\"\u003eFits on a 2’ x 2’ pad and is 38% lighter with a 28% smaller footprint. Easy to install. Top easily removed and rotated 180 degrees for increased accessibility; includes flip up electrical panel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n\u003c!-- Left Side: Text --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px; font-size: 18px; line-height: 1.6;\"\u003e\n\u003ch2 data-start=\"464\" data-end=\"478\"\u003e\u003cstrong\u003eAutomation-Ready \u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCompatible with AquaLink® automation systems for anytime, anywhere control from your mobile device using the iAquaLink™ app.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Right Side: Big Image --\u003e\n\u003cdiv style=\"flex: 1; min-width: 300px;\"\u003e\u003cimg style=\"width: 100%; max-width: 1000px; height: auto; border-radius: 10px;\" alt=\"Product Image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/JXI400NC_Jandy_JXi_400_BTU_Pool_Spa_Natural_ASME_Heater_Banner_4.jpg?v=1745686068\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cstrong\u003eThe JXiQ™ ASME Compliant Gas Pool \u0026amp; Spa Heater for Commercial use takes the guess work out of pool heating making it easy to use, install and service.\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBuilt with the brawn to withstand the high-use demands of commercial properties, ASME compliant JXiQ heaters are ultra-compact and constructed with bronze headers and thicker-walled cupronickel fin tubes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Grade Models\u003cbr\u003e\u003c\/strong\u003eSmall but strong enough to handle the rigors of non-residential use, ASME compliant JXiQ heaters feature burly bronze headers and 30%1 thicker-walled, robust cupronickel or cupronickel heat exchanger tubes and corrosion-resistant bronze headers to meet the high stresses of commercial installations\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-Efficient Heating\u003cbr\u003e\u003c\/strong\u003e84% thermal efficiency rating2 and low-NOX design surpasses strict DOE Energy Efficiency requirements\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Gas Pressure Sensor\u003cbr\u003e\u003c\/strong\u003eEnsures there’s enough gas pressure to safely ignite\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimize Flow\u003cbr\u003e\u003c\/strong\u003eMeasures temperature rise between the inlet and outlet\u003cbr\u003eto optimize flow and avoid heat exchanger failures\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Sensing Power Input\u003cbr\u003e\u003c\/strong\u003eAutomatically adjusts to supplied power when installed — no cards to flip and no wires to change\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLargest Display in the Industry\u003cbr\u003e\u003c\/strong\u003eDigital display is 50% larger than before and\u003cbr\u003ecapable of showing 80 characters\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest Drop-In Option\u003c\/strong\u003e\u003cbr\u003ePlumbing flexibility for quick MasterTemp® and Max-E Therm®\u003cbr\u003ereplacement that requires no plumbing adjustments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Installation. Easy Servicing.\u003c\/strong\u003e\u003cbr\u003eTop easily removed and rotated 180 degrees for increased accessibility; includes flip up electrical panel \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps Critters Out\u003c\/strong\u003e\u003cbr\u003eNo more chewed up wires. The JXiQ is made with a fully encased shell to protect against rodent intrusion and damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact Lightweight Design\u003cbr\u003e\u003c\/strong\u003eFits on a 2’ x 2’ pad and is 38% lighter with a 28% smaller footprint\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Versaflo Bypass -\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e - 22.1\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency\u003c\/strong\u003e - 0.84\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExchanger\u003c\/strong\u003e - Cupronickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type\u003c\/strong\u003e - Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders\u003c\/strong\u003e - Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e - 26.5\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Rate BTUH\u003c\/strong\u003e - 399K BTUH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. GPM\u003c\/strong\u003e - 100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin. GPM \u003c\/strong\u003e- 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePool Surface Area\u003c\/strong\u003e - up to 600 sqft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Diameter\u003c\/strong\u003e - 8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight \u003c\/strong\u003e- 168 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e - 23.3\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"\" data-end=\"1008\" data-start=\"994\"\u003e\u003cstrong\u003eHighlights\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"1492\" data-start=\"1010\"\u003e\n\u003cstrong data-end=\"1037\" data-start=\"1010\"\u003eCommercial-Grade Build:\u003c\/strong\u003e ASME-certified with bronze headers for superior corrosion resistance\u003cbr data-end=\"1109\" data-start=\"1106\"\u003e\u003cstrong data-end=\"1137\" data-start=\"1109\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1492\" data-start=\"1010\"\u003e\n\u003cstrong data-end=\"1137\" data-start=\"1109\"\u003eHigh Thermal Efficiency:\u003c\/strong\u003e 84% thermal efficiency for optimal performance and energy savings\u003cbr data-end=\"1206\" data-start=\"1203\"\u003e\u003cstrong data-end=\"1240\" data-start=\"1206\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1492\" data-start=\"1010\"\u003e\n\u003cstrong data-end=\"1240\" data-start=\"1206\"\u003eCompact and Retrofit-Friendly:\u003c\/strong\u003e Small footprint simplifies installation, even in tight spaces\u003cbr data-end=\"1305\" data-start=\"1302\"\u003e\u003cstrong data-end=\"1326\" data-start=\"1305\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1492\" data-start=\"1010\"\u003e\n\u003cstrong data-end=\"1326\" data-start=\"1305\"\u003eAutomation Ready:\u003c\/strong\u003e Full integration with AquaLink® systems for remote control via iAquaLink®\u003cbr data-end=\"1403\" data-start=\"1400\"\u003e\u003cstrong data-end=\"1433\" data-start=\"1403\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1492\" data-start=\"1010\"\u003e\n\u003cstrong data-end=\"1433\" data-start=\"1403\"\u003eOptional VersaFlo™ Bypass:\u003c\/strong\u003e Enhances hydraulic performance and boosts energy savings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"238\" data-end=\"257\" class=\"\"\u003eAdditional Info\u003c\/h3\u003e\n\u003ch2 data-start=\"259\" data-end=\"339\" class=\"\"\u003eOEM Jandy JXi 400N ASME Pool \u0026amp; Spa Heater | 399,000 BTUs | Commercial Grade\u003c\/h2\u003e\n\u003cp data-start=\"340\" data-end=\"582\" class=\"\"\u003eThe Jandy JXi 400N ASME Natural Gas Pool \u0026amp; Spa Heater is engineered for high-use commercial environments, offering robust 399,000 BTU heating performance, superior durability, and energy efficiency in an ultra-compact, easy-to-install design.\u003c\/p\u003e\n\u003ch2 data-start=\"584\" data-end=\"618\" class=\"\"\u003eCommercial-Grade Construction\u003c\/h2\u003e\n\u003ch4 data-start=\"620\" data-end=\"652\" class=\"\"\u003eASME-Certified Durability\u003c\/h4\u003e\n\u003cp data-start=\"653\" data-end=\"794\" class=\"\"\u003eBuilt with bronze headers and 30% thicker-walled cupronickel heat exchanger tubes to withstand high-stress commercial applications.\u003c\/p\u003e\n\u003ch4 data-start=\"796\" data-end=\"828\" class=\"\"\u003eCorrosion-Resistant Build\u003c\/h4\u003e\n\u003cp data-start=\"829\" data-end=\"906\" class=\"\"\u003eEngineered for long-lasting performance, even in harsh, high-demand settings.\u003c\/p\u003e\n\u003ch2 data-start=\"908\" data-end=\"937\" class=\"\"\u003eEnergy-Efficient Heating\u003c\/h2\u003e\n\u003ch4 data-start=\"939\" data-end=\"968\" class=\"\"\u003e84% Thermal Efficiency\u003c\/h4\u003e\n\u003cp data-start=\"969\" data-end=\"1044\" class=\"\"\u003eExceeds strict DOE energy efficiency standards for lower operational costs.\u003c\/p\u003e\n\u003ch4 data-start=\"1046\" data-end=\"1067\" class=\"\"\u003eLow-NOx Design\u003c\/h4\u003e\n\u003cp data-start=\"1068\" data-end=\"1130\" class=\"\"\u003eEnvironmentally friendly combustion reduces harmful emissions.\u003c\/p\u003e\n\u003ch2 data-start=\"1132\" data-end=\"1170\" class=\"\"\u003eUltra-Compact, Lightweight Design\u003c\/h2\u003e\n\u003ch4 data-start=\"1172\" data-end=\"1201\" class=\"\"\u003eSpace-Saving Footprint\u003c\/h4\u003e\n\u003cp data-start=\"1202\" data-end=\"1298\" class=\"\"\u003eFits on a 2’ x 2’ pad, 28% smaller footprint, and approximately 38% lighter than similar models.\u003c\/p\u003e\n\u003ch4 data-start=\"1300\" data-end=\"1320\" class=\"\"\u003eEasy Handling\u003c\/h4\u003e\n\u003cp data-start=\"1321\" data-end=\"1422\" class=\"\"\u003eTop panel easily rotates 180° and includes a flip-up electrical panel for faster setup and servicing.\u003c\/p\u003e\n\u003ch2 data-start=\"1424\" data-end=\"1460\" class=\"\"\u003eSeamless Automation Integration\u003c\/h2\u003e\n\u003ch4 data-start=\"1462\" data-end=\"1489\" class=\"\"\u003eAquaLink® Compatible\u003c\/h4\u003e\n\u003cp data-start=\"1490\" data-end=\"1563\" class=\"\"\u003eControl heating remotely via the iAquaLink® app for ultimate convenience.\u003c\/p\u003e\n\u003ch4 data-start=\"1565\" data-end=\"1596\" class=\"\"\u003eAuto-Sensing Power Input\u003c\/h4\u003e\n\u003cp data-start=\"1597\" data-end=\"1672\" class=\"\"\u003eAutomatically detects and adjusts to supplied voltage — no rewiring needed.\u003c\/p\u003e\n\u003ch2 data-start=\"1674\" data-end=\"1713\" class=\"\"\u003eOptimized for Commercial Retrofits\u003c\/h2\u003e\n\u003ch4 data-start=\"1715\" data-end=\"1762\" class=\"\"\u003eMasterTemp® and Max-E-Therm® Replacement\u003c\/h4\u003e\n\u003cp data-start=\"1763\" data-end=\"1832\" class=\"\"\u003eDesigned to simplify retrofitting without requiring plumbing changes.\u003c\/p\u003e\n\u003ch4 data-start=\"1834\" data-end=\"1860\" class=\"\"\u003eCritter-Proof Shell\u003c\/h4\u003e\n\u003cp data-start=\"1861\" data-end=\"1927\" class=\"\"\u003eFully enclosed shell prevents rodent damage for added reliability.\u003c\/p\u003e\n\u003ch2 data-start=\"1929\" data-end=\"1958\" class=\"\"\u003ePerformance Enhancements\u003c\/h2\u003e\n\u003ch4 data-start=\"1960\" data-end=\"2003\" class=\"\"\u003eOptional VersaFlo™ Integrated Bypass\u003c\/h4\u003e\n\u003cp data-start=\"2004\" data-end=\"2085\" class=\"\"\u003eBoosts hydraulic performance and further increases energy savings when installed.\u003c\/p\u003e\n\u003ch4 data-start=\"2087\" data-end=\"2122\" class=\"\"\u003eFlow Optimization Technology\u003c\/h4\u003e\n\u003cp data-start=\"2123\" data-end=\"2227\" class=\"\"\u003eBuilt-in sensors measure inlet\/outlet temperature to optimize flow rates and protect the heat exchanger.\u003c\/p\u003e\n\u003ch2 data-start=\"2229\" data-end=\"2248\" class=\"\"\u003eSpecifications\u003c\/h2\u003e\n\u003ch4 data-start=\"2250\" data-end=\"2266\" class=\"\"\u003eFuel Type\u003c\/h4\u003e\n\u003cp data-start=\"2267\" data-end=\"2278\" class=\"\"\u003eNatural Gas\u003c\/p\u003e\n\u003ch4 data-start=\"2280\" data-end=\"2297\" class=\"\"\u003eInput Rate\u003c\/h4\u003e\n\u003cp data-start=\"2298\" data-end=\"2307\" class=\"\"\u003e399K BTUH\u003c\/p\u003e\n\u003ch4 data-start=\"2309\" data-end=\"2326\" class=\"\"\u003eEfficiency\u003c\/h4\u003e\n\u003cp data-start=\"2327\" data-end=\"2349\" class=\"\"\u003e84% Thermal Efficiency\u003c\/p\u003e\n\u003ch4 data-start=\"2351\" data-end=\"2372\" class=\"\"\u003eHeat Exchanger\u003c\/h4\u003e\n\u003cp data-start=\"2373\" data-end=\"2402\" class=\"\"\u003eCupronickel (ASME-grade thickness)\u003c\/p\u003e\n\u003ch4 data-start=\"2404\" data-end=\"2418\" class=\"\"\u003eHeaders\u003c\/h4\u003e\n\u003cp data-start=\"2419\" data-end=\"2425\" class=\"\"\u003eBronze\u003c\/p\u003e\n\u003ch4 data-start=\"2427\" data-end=\"2443\" class=\"\"\u003eFlow Rate\u003c\/h4\u003e\n\u003cp data-start=\"2444\" data-end=\"2457\" class=\"\"\u003e30 to 100 GPM\u003c\/p\u003e\n\u003ch4 data-start=\"2459\" data-end=\"2476\" class=\"\"\u003eDimensions\u003c\/h4\u003e\n\u003cp data-start=\"2477\" data-end=\"2517\" class=\"\"\u003e22.1\" Depth × 23.3\" Width × 26.5\" Height\u003c\/p\u003e\n\u003ch4 data-start=\"2519\" data-end=\"2539\" class=\"\"\u003eVent Diameter\u003c\/h4\u003e\n\u003cp data-start=\"2540\" data-end=\"2542\" class=\"\"\u003e8\"\u003c\/p\u003e\n\u003ch4 data-start=\"2544\" data-end=\"2557\" class=\"\"\u003eWeight\u003c\/h4\u003e\n\u003cp data-start=\"2558\" data-end=\"2565\" class=\"\"\u003e168 lbs\u003c\/p\u003e\n\u003ch4 data-start=\"2567\" data-end=\"2586\" class=\"\"\u003eInstallation\u003c\/h4\u003e\n\u003cp data-start=\"2587\" data-end=\"2644\" class=\"\"\u003eProfessional installation required; automation compatible\u003c\/p\u003e","brand":"Jandy","offers":[{"title":"Default Title","offer_id":51562302243116,"sku":"JXI400NS","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/1943\/3260\/files\/JXI400NSJandyJXi400BTUPool_SpaNaturalASMECUNIHeaterSOSPool_6.jpg?v=1755291858","url":"https:\/\/www.sospool.com\/products\/jxi400ns-jandy-jxi-400-btu-pool-spa-natural-asme-cuni-heater","provider":"SOS Pool \u0026 Spa Supplies","version":"1.0","type":"link"}