{"product_id":"jandy-jxi-natural-gas-heater-399k-btu-cupronickel-exchanger-jxi400nn","title":"Jandy JXI Natural Gas Heater, 399K BTU, Cupronickel Exchanger | JXI400NN","description":"\u003ch2 data-end=\"624\" data-start=\"603\" data-section-id=\"53drpp\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-end=\"995\" data-start=\"625\"\u003eThe \u003cstrong data-end=\"672\" data-start=\"629\"\u003eJandy JXi Natural Gas Heater | JXI400NN\u003c\/strong\u003e is a compact, high-performance pool and spa heater designed to deliver fast heat-up times, efficient operation, and professional-grade reliability. With a powerful \u003cstrong data-end=\"858\" data-start=\"837\"\u003e399,000 BTU input\u003c\/strong\u003e, this heater is ideal for medium to large pools, spas, pool\/spa combinations, and systems where quick temperature recovery is important.\u003c\/p\u003e\n\u003cp data-end=\"1344\" data-start=\"997\"\u003eThis model includes a durable \u003cstrong data-end=\"1057\" data-start=\"1027\"\u003ecupronickel heat exchanger\u003c\/strong\u003e, making it a strong choice for demanding water conditions, saltwater pools, high-flow systems, and applications where added corrosion resistance is preferred. The JXi platform is known for its space-saving footprint, lightweight design, low-NOx operation, and installer-friendly layout.\u003c\/p\u003e\n\u003cp data-end=\"1561\" data-start=\"1346\"\u003eWith \u003cstrong data-end=\"1371\" data-start=\"1351\"\u003enatural gas fuel\u003c\/strong\u003e, \u003cstrong data-end=\"1396\" data-start=\"1373\"\u003eelectronic ignition\u003c\/strong\u003e, \u003cstrong data-end=\"1418\" data-start=\"1398\"\u003edigital controls\u003c\/strong\u003e, \u003cstrong data-end=\"1444\" data-start=\"1420\"\u003e2\" water connections\u003c\/strong\u003e, and included Versa Plumb® connection components, the JXI400NN is built for professional pool heating installations.\u003c\/p\u003e\n\u003chr data-end=\"1566\" data-start=\"1563\"\u003e\n\u003ch2 data-end=\"1601\" data-start=\"1568\" data-section-id=\"1offu8t\"\u003e\u003cstrong\u003e⚠️ Important Purchase Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1728\" data-start=\"1602\"\u003e\u003cstrong\u003eThis product is intended to be purchased and installed by pool professionals. Product support is not provided to homeowners.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1793\" data-start=\"1730\"\u003e\u003cstrong\u003eReturns are not accepted on this or any electronic equipment.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1876\" data-start=\"1795\"\u003e\u003cstrong\u003eDamages to product from shipping will be covered and must be reported promptly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1963\" data-start=\"1878\"\u003e\u003cstrong\u003eTo prevent possible damage during transit, we strongly recommend selecting Freight.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"2019\" data-start=\"1965\"\u003e\u003cstrong\u003eBy purchasing this item, you agree to the terms above.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-end=\"2024\" data-start=\"2021\"\u003e\n\u003ch2 data-end=\"2040\" data-start=\"2026\" data-section-id=\"4fdhx7\"\u003eIdeal For\u003c\/h2\u003e\n\u003cul data-end=\"2471\" data-start=\"2041\"\u003e\n\u003cli data-end=\"2078\" data-start=\"2041\" data-section-id=\"ca8pke\"\u003eMedium to large residential pools\u003c\/li\u003e\n\u003cli data-end=\"2115\" data-start=\"2079\" data-section-id=\"161auk2\"\u003ePool and spa combination systems\u003c\/li\u003e\n\u003cli data-end=\"2149\" data-start=\"2116\" data-section-id=\"1ey9rdf\"\u003eFast spa heat-up applications\u003c\/li\u003e\n\u003cli data-end=\"2200\" data-start=\"2150\" data-section-id=\"1txcxtt\"\u003eSaltwater pools and demanding water conditions\u003c\/li\u003e\n\u003cli data-end=\"2237\" data-start=\"2201\" data-section-id=\"5m52se\"\u003eNatural gas pool heating systems\u003c\/li\u003e\n\u003cli data-end=\"2275\" data-start=\"2238\" data-section-id=\"1z6gxi\"\u003eEquipment pads with limited space\u003c\/li\u003e\n\u003cli data-end=\"2312\" data-start=\"2276\" data-section-id=\"1qiu26c\"\u003eReplacing older gas pool heaters\u003c\/li\u003e\n\u003cli data-end=\"2362\" data-start=\"2313\" data-section-id=\"ri55r9\"\u003ePool owners wanting fast temperature recovery\u003c\/li\u003e\n\u003cli data-end=\"2405\" data-start=\"2363\" data-section-id=\"1euinj3\"\u003eProfessional pool heater installations\u003c\/li\u003e\n\u003cli data-end=\"2471\" data-start=\"2406\" data-section-id=\"1th657r\"\u003eSystems requiring a corrosion-resistant cupronickel exchanger\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2476\" data-start=\"2473\"\u003e\n\u003ch2 data-end=\"2495\" data-start=\"2478\" data-section-id=\"14at72t\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-end=\"3654\" data-start=\"2496\"\u003e\n\u003cli data-end=\"2581\" data-start=\"2496\" data-section-id=\"71u0c0\"\u003e\n\u003cstrong data-end=\"2519\" data-start=\"2498\"\u003e399,000 BTU input\u003c\/strong\u003e — delivers powerful heating performance for pools and spas.\u003c\/li\u003e\n\u003cli data-end=\"2670\" data-start=\"2582\" data-section-id=\"11c3t5m\"\u003e\n\u003cstrong data-end=\"2609\" data-start=\"2584\"\u003eNatural gas operation\u003c\/strong\u003e — reliable heating fuel source for compatible gas systems.\u003c\/li\u003e\n\u003cli data-end=\"2784\" data-start=\"2671\" data-section-id=\"dd44e6\"\u003e\n\u003cstrong data-end=\"2703\" data-start=\"2673\"\u003eCupronickel heat exchanger\u003c\/strong\u003e — offers enhanced resistance to corrosion and demanding pool water conditions.\u003c\/li\u003e\n\u003cli data-end=\"2873\" data-start=\"2785\" data-section-id=\"18vvhgv\"\u003e\n\u003cstrong data-end=\"2805\" data-start=\"2787\"\u003eLow-NOx design\u003c\/strong\u003e — designed to meet modern emissions requirements in many regions.\u003c\/li\u003e\n\u003cli data-end=\"2963\" data-start=\"2874\" data-section-id=\"10cnc10\"\u003e\n\u003cstrong data-end=\"2901\" data-start=\"2876\"\u003eCompact JXi footprint\u003c\/strong\u003e — approx. 2' x 2' equipment pad footprint helps save space.\u003c\/li\u003e\n\u003cli data-end=\"3069\" data-start=\"2964\" data-section-id=\"eg21t2\"\u003e\n\u003cstrong data-end=\"2995\" data-start=\"2966\"\u003eLightweight heater design\u003c\/strong\u003e — easier to handle and position compared with many traditional heaters.\u003c\/li\u003e\n\u003cli data-end=\"3142\" data-start=\"3070\" data-section-id=\"1gjaiaf\"\u003e\n\u003cstrong data-end=\"3095\" data-start=\"3072\"\u003eElectronic ignition\u003c\/strong\u003e — reliable startup without a standing pilot.\u003c\/li\u003e\n\u003cli data-end=\"3234\" data-start=\"3143\" data-section-id=\"p4zeg9\"\u003e\n\u003cstrong data-end=\"3174\" data-start=\"3145\"\u003eDigital control interface\u003c\/strong\u003e — simplifies temperature adjustment and system operation.\u003c\/li\u003e\n\u003cli data-end=\"3331\" data-start=\"3235\" data-section-id=\"thbj22\"\u003e\n\u003cstrong data-end=\"3261\" data-start=\"3237\"\u003e2\" water connections\u003c\/strong\u003e — standard pool plumbing connections for professional installation.\u003c\/li\u003e\n\u003cli data-end=\"3433\" data-start=\"3332\" data-section-id=\"82n480\"\u003e\n\u003cstrong data-end=\"3381\" data-start=\"3334\"\u003eVersa Plumb® compatible components included\u003c\/strong\u003e — supports efficient Jandy equipment pad layouts.\u003c\/li\u003e\n\u003cli data-end=\"3560\" data-start=\"3434\" data-section-id=\"w5j7oc\"\u003e\n\u003cstrong data-end=\"3466\" data-start=\"3436\"\u003eIndoor\/outdoor application\u003c\/strong\u003e — suitable for approved indoor or outdoor installations when properly vented and installed.\u003c\/li\u003e\n\u003cli data-end=\"3654\" data-start=\"3561\" data-section-id=\"c6zebz\"\u003e\n\u003cstrong data-end=\"3589\" data-start=\"3563\"\u003eCSA and ANSI certified\u003c\/strong\u003e — built to recognized heater safety and performance standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"3659\" data-start=\"3656\"\u003e\n\u003ch2 data-end=\"3674\" data-start=\"3661\" data-section-id=\"33fg5d\"\u003eBenefits\u003c\/h2\u003e\n\u003cp data-end=\"3930\" data-start=\"3675\"\u003eThe Jandy JXI400NN provides the heating power needed for fast pool and spa temperature recovery while maintaining a compact, efficient design. Its 399K BTU rating makes it a strong choice for larger pools and spa systems where quick heat-up is a priority.\u003c\/p\u003e\n\u003cp data-end=\"4228\" data-start=\"3932\"\u003eThe cupronickel heat exchanger is a major advantage for pools with salt systems, aggressive water chemistry, or higher mineral content. Compared with standard copper exchanger models, cupronickel provides added durability in tougher water environments when water chemistry is properly maintained.\u003c\/p\u003e\n\u003cp data-end=\"4395\" data-start=\"4230\"\u003eFor installers, the JXi’s compact footprint, included union components, lightweight cabinet, and digital controls help make installation and service more convenient.\u003c\/p\u003e\n\u003chr data-end=\"4400\" data-start=\"4397\"\u003e\n\u003ch2 data-end=\"4421\" data-start=\"4402\" data-section-id=\"1qhk4i3\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"5999\" data-start=\"4423\"\u003e\n\u003cthead data-end=\"4450\" data-start=\"4423\"\u003e\n\u003ctr data-end=\"4450\" data-start=\"4423\"\u003e\n\u003cth class=\"\" data-col-size=\"sm\" data-end=\"4439\" data-start=\"4423\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"\" data-col-size=\"md\" data-end=\"4450\" data-start=\"4439\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"5999\" data-start=\"4461\"\u003e\n\u003ctr data-end=\"4541\" data-start=\"4461\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4476\" data-start=\"4461\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd data-end=\"4541\" data-start=\"4476\" data-col-size=\"md\"\u003eJandy JXi Natural Gas Heater, 399K BTU, Cupronickel Exchanger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4559\" data-start=\"4542\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4550\" data-start=\"4542\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4559\" data-start=\"4550\"\u003eJandy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4594\" data-start=\"4560\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4575\" data-start=\"4560\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd data-end=\"4594\" data-start=\"4575\" data-col-size=\"md\"\u003eFluidra \/ Jandy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4611\" data-start=\"4595\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4604\" data-start=\"4595\"\u003eSeries\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4611\" data-start=\"4604\"\u003eJXi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4638\" data-start=\"4612\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4626\" data-start=\"4612\"\u003ePart Number\u003c\/td\u003e\n\u003ctd data-end=\"4638\" data-start=\"4626\" data-col-size=\"md\"\u003eJXI400NN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4657\" data-start=\"4639\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4645\" data-start=\"4639\"\u003eSKU\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4657\" data-start=\"4645\"\u003eJXI400NN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4701\" data-start=\"4658\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4687\" data-start=\"4658\"\u003eDistributor Product Number\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4701\" data-start=\"4687\"\u003eLAR-15-836\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4724\" data-start=\"4702\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4708\" data-start=\"4702\"\u003eUPC\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4724\" data-start=\"4708\"\u003e052337068673\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4767\" data-start=\"4725\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4740\" data-start=\"4725\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4767\" data-start=\"4740\"\u003ePool and spa gas heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4813\" data-start=\"4768\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4782\" data-start=\"4768\"\u003eHeater Type\u003c\/td\u003e\n\u003ctd data-end=\"4813\" data-start=\"4782\" data-col-size=\"md\"\u003eLow-NOx pool and spa heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4841\" data-start=\"4814\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4826\" data-start=\"4814\"\u003eFuel Type\u003c\/td\u003e\n\u003ctd data-end=\"4841\" data-start=\"4826\" data-col-size=\"md\"\u003eNatural gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4869\" data-start=\"4842\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4854\" data-start=\"4842\"\u003eBTU Input\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4869\" data-start=\"4854\"\u003e399,000 BTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4911\" data-start=\"4870\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4896\" data-start=\"4870\"\u003eHeat Exchanger Material\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4911\" data-start=\"4896\"\u003eCupronickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4945\" data-start=\"4912\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4930\" data-start=\"4912\"\u003eTubing Material\u003c\/td\u003e\n\u003ctd data-end=\"4945\" data-start=\"4930\" data-col-size=\"md\"\u003eCupronickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"4983\" data-start=\"4946\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"4964\" data-start=\"4946\"\u003eHeader Material\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"4983\" data-start=\"4964\"\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5023\" data-start=\"4984\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5000\" data-start=\"4984\"\u003eIgnition Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5023\" data-start=\"5000\"\u003eElectronic ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5050\" data-start=\"5024\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5039\" data-start=\"5024\"\u003eControl Type\u003c\/td\u003e\n\u003ctd data-end=\"5050\" data-start=\"5039\" data-col-size=\"md\"\u003eDigital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5087\" data-start=\"5051\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5072\" data-start=\"5051\"\u003eThermal Efficiency\u003c\/td\u003e\n\u003ctd data-end=\"5087\" data-start=\"5072\" data-col-size=\"md\"\u003eApprox. 83%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5113\" data-start=\"5088\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5098\" data-start=\"5088\"\u003eVoltage\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5113\" data-start=\"5098\"\u003e120V \/ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5138\" data-start=\"5114\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5122\" data-start=\"5114\"\u003ePhase\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5138\" data-start=\"5122\"\u003eSingle phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5160\" data-start=\"5139\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5151\" data-start=\"5139\"\u003eFrequency\u003c\/td\u003e\n\u003ctd data-end=\"5160\" data-start=\"5151\" data-col-size=\"md\"\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5191\" data-start=\"5161\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5181\" data-start=\"5161\"\u003eMinimum Flow Rate\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5191\" data-start=\"5181\"\u003e40 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5223\" data-start=\"5192\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5212\" data-start=\"5192\"\u003eMaximum Flow Rate\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5223\" data-start=\"5212\"\u003e120 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5254\" data-start=\"5224\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5248\" data-start=\"5224\"\u003eWater Connection Size\u003c\/td\u003e\n\u003ctd data-end=\"5254\" data-start=\"5248\" data-col-size=\"md\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5289\" data-start=\"5255\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5277\" data-start=\"5255\"\u003eGas Connection Size\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5289\" data-start=\"5277\"\u003e3\/4\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5312\" data-start=\"5290\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5306\" data-start=\"5290\"\u003eFlue Diameter\u003c\/td\u003e\n\u003ctd data-end=\"5312\" data-start=\"5306\" data-col-size=\"md\"\u003e8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5347\" data-start=\"5313\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5341\" data-start=\"5313\"\u003eIndoor Vent Pipe Diameter\u003c\/td\u003e\n\u003ctd data-end=\"5347\" data-start=\"5341\" data-col-size=\"md\"\u003e6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5381\" data-start=\"5348\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5364\" data-start=\"5348\"\u003eCabinet Width\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5381\" data-start=\"5364\"\u003eApprox. 22.9\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5415\" data-start=\"5382\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5398\" data-start=\"5382\"\u003eCabinet Depth\u003c\/td\u003e\n\u003ctd data-end=\"5415\" data-start=\"5398\" data-col-size=\"md\"\u003eApprox. 22.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5450\" data-start=\"5416\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5433\" data-start=\"5416\"\u003eCabinet Height\u003c\/td\u003e\n\u003ctd data-end=\"5450\" data-start=\"5433\" data-col-size=\"md\"\u003eApprox. 26.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5490\" data-start=\"5451\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5471\" data-start=\"5451\"\u003eProduct Footprint\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5490\" data-start=\"5471\"\u003eApprox. 2' x 2'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5526\" data-start=\"5491\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5508\" data-start=\"5491\"\u003eProduct Weight\u003c\/td\u003e\n\u003ctd data-end=\"5526\" data-start=\"5508\" data-col-size=\"md\"\u003eApprox. 126 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5567\" data-start=\"5527\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5549\" data-start=\"5527\"\u003eEach Product Weight\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5567\" data-start=\"5549\"\u003eApprox. 149 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5621\" data-start=\"5568\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5590\" data-start=\"5568\"\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd data-end=\"5621\" data-start=\"5590\" data-col-size=\"md\"\u003eApprox. 40\" x 23.5\" x 28.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5638\" data-start=\"5622\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5630\" data-start=\"5622\"\u003eColor\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5638\" data-start=\"5630\"\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5665\" data-start=\"5639\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5656\" data-start=\"5639\"\u003eHousing Finish\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5665\" data-start=\"5656\"\u003eMatte\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5723\" data-start=\"5666\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5690\" data-start=\"5666\"\u003eStandards \/ Approvals\u003c\/td\u003e\n\u003ctd data-end=\"5723\" data-start=\"5690\" data-col-size=\"md\"\u003eCSA Certified, ANSI Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5762\" data-start=\"5724\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5738\" data-start=\"5724\"\u003eApplication\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5762\" data-start=\"5738\"\u003ePool and spa heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5846\" data-start=\"5763\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5787\" data-start=\"5763\"\u003eInstallation Location\u003c\/td\u003e\n\u003ctd data-end=\"5846\" data-start=\"5787\" data-col-size=\"md\"\u003eApproved outdoor or properly vented indoor installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5884\" data-start=\"5847\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5868\" data-start=\"5847\"\u003eEquipment Category\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5884\" data-start=\"5868\"\u003ePool heaters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5929\" data-start=\"5885\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5922\" data-start=\"5885\"\u003eProfessional Installation Required\u003c\/td\u003e\n\u003ctd data-end=\"5929\" data-start=\"5922\" data-col-size=\"md\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5980\" data-start=\"5930\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5940\" data-start=\"5930\"\u003eReturns\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-end=\"5980\" data-start=\"5940\"\u003eNot accepted on electronic equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"5999\" data-start=\"5981\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"5991\" data-start=\"5981\"\u003eSold As\u003c\/td\u003e\n\u003ctd data-end=\"5999\" data-start=\"5991\" data-col-size=\"md\"\u003eEach\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-end=\"6004\" data-start=\"6001\"\u003e\n\u003ch2 data-end=\"6030\" data-start=\"6006\" data-section-id=\"czfsbl\"\u003eIncluded Components\u003c\/h2\u003e\n\u003cul data-end=\"6345\" data-start=\"6031\"\u003e\n\u003cli data-end=\"6076\" data-start=\"6031\" data-section-id=\"1m1uzux\"\u003e1 × Jandy JXi JXI400NN natural gas heater\u003c\/li\u003e\n\u003cli data-end=\"6116\" data-start=\"6077\" data-section-id=\"1guftzu\"\u003eCupronickel heat exchanger assembly\u003c\/li\u003e\n\u003cli data-end=\"6146\" data-start=\"6117\" data-section-id=\"1pe2eog\"\u003eDigital control interface\u003c\/li\u003e\n\u003cli data-end=\"6175\" data-start=\"6147\" data-section-id=\"qx8x3o\"\u003eVersa Plumb® sweep elbow\u003c\/li\u003e\n\u003cli data-end=\"6208\" data-start=\"6176\" data-section-id=\"1973qks\"\u003e2\" universal union tailpiece\u003c\/li\u003e\n\u003cli data-end=\"6235\" data-start=\"6209\" data-section-id=\"1kvqv4k\"\u003e2\" universal union cap\u003c\/li\u003e\n\u003cli data-end=\"6265\" data-start=\"6236\" data-section-id=\"11sl80m\"\u003e2\" universal union O-ring\u003c\/li\u003e\n\u003cli data-end=\"6292\" data-start=\"6266\" data-section-id=\"1kuaa15\"\u003e2\" universal union nut\u003c\/li\u003e\n\u003cli data-end=\"6345\" data-start=\"6293\" data-section-id=\"hpnzjy\"\u003eManufacturer-supplied installation documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"6580\" data-start=\"6347\"\u003e\u003cem data-end=\"6580\" data-start=\"6347\"\u003eGas line materials, shutoff valve, electrical wiring, venting components, bonding materials, automation wiring, plumbing valves, check valves, and installation labor are sold separately unless specifically included by the supplier.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr data-end=\"6585\" data-start=\"6582\"\u003e\n\u003ch2 data-end=\"6610\" data-start=\"6587\" data-section-id=\"1hui92y\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-end=\"6919\" data-start=\"6611\"\u003eThis heater must be installed by a qualified pool professional, licensed gas technician, or licensed contractor as required by local code. Proper installation requires correct gas supply sizing, venting, combustion air, electrical wiring, bonding, grounding, water flow, plumbing layout, and startup testing.\u003c\/p\u003e\n\u003cp data-end=\"7190\" data-start=\"6921\"\u003eBefore installation, confirm that the fuel type is \u003cstrong data-end=\"6987\" data-start=\"6972\"\u003enatural gas\u003c\/strong\u003e, the pool system can provide the required \u003cstrong data-end=\"7044\" data-start=\"7030\"\u003e40–120 GPM\u003c\/strong\u003e flow range, and the gas supply can support a \u003cstrong data-end=\"7105\" data-start=\"7090\"\u003e399,000 BTU\u003c\/strong\u003e heater. Indoor installations require approved venting and combustion air provisions.\u003c\/p\u003e\n\u003cp data-end=\"7315\" data-start=\"7192\"\u003eWater chemistry must be maintained within recommended ranges to protect the heat exchanger and preserve heater performance.\u003c\/p\u003e\n\u003chr data-end=\"7320\" data-start=\"7317\"\u003e\n\u003ch2 data-end=\"7346\" data-start=\"7322\" data-section-id=\"w1k9cu\"\u003eCustomer-Facing Q\u0026amp;A\u003c\/h2\u003e\n\u003cp data-end=\"7494\" data-start=\"7348\"\u003e\u003cstrong data-end=\"7382\" data-start=\"7348\"\u003eQ: What is the Jandy JXI400NN?\u003c\/strong\u003e\u003cbr data-end=\"7385\" data-start=\"7382\"\u003eA: It is a Jandy JXi natural gas pool and spa heater with 399,000 BTU input and a cupronickel heat exchanger.\u003c\/p\u003e\n\u003cp data-end=\"7549\" data-start=\"7496\"\u003e\u003cstrong data-end=\"7519\" data-start=\"7496\"\u003eQ: What is the SKU?\u003c\/strong\u003e\u003cbr data-end=\"7522\" data-start=\"7519\"\u003eA: The SKU is \u003cstrong data-end=\"7548\" data-start=\"7536\"\u003eJXI400NN\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"7608\" data-start=\"7551\"\u003e\u003cstrong data-end=\"7574\" data-start=\"7551\"\u003eQ: What is the UPC?\u003c\/strong\u003e\u003cbr data-end=\"7577\" data-start=\"7574\"\u003eA: The UPC is \u003cstrong data-end=\"7607\" data-start=\"7591\"\u003e052337068673\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"7711\" data-start=\"7610\"\u003e\u003cstrong data-end=\"7656\" data-start=\"7610\"\u003eQ: What is the distributor product number?\u003c\/strong\u003e\u003cbr data-end=\"7659\" data-start=\"7656\"\u003eA: The distributor product number is \u003cstrong data-end=\"7710\" data-start=\"7696\"\u003eLAR-15-836\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"7794\" data-start=\"7713\"\u003e\u003cstrong data-end=\"7756\" data-start=\"7713\"\u003eQ: What fuel type does this heater use?\u003c\/strong\u003e\u003cbr data-end=\"7759\" data-start=\"7756\"\u003eA: This model uses \u003cstrong data-end=\"7793\" data-start=\"7778\"\u003enatural gas\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"7875\" data-start=\"7796\"\u003e\u003cstrong data-end=\"7832\" data-start=\"7796\"\u003eQ: How many BTUs is this heater?\u003c\/strong\u003e\u003cbr data-end=\"7835\" data-start=\"7832\"\u003eA: It is rated at \u003cstrong data-end=\"7874\" data-start=\"7853\"\u003e399,000 BTU input\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"8031\" data-start=\"7877\"\u003e\u003cstrong data-end=\"7934\" data-start=\"7877\"\u003eQ: Does this model have a cupronickel heat exchanger?\u003c\/strong\u003e\u003cbr data-end=\"7937\" data-start=\"7934\"\u003eA: Yes. The JXI400NN includes a \u003cstrong data-end=\"7999\" data-start=\"7969\"\u003ecupronickel heat exchanger\u003c\/strong\u003e for added corrosion resistance.\u003c\/p\u003e\n\u003cp data-end=\"8218\" data-start=\"8033\"\u003e\u003cstrong data-end=\"8073\" data-start=\"8033\"\u003eQ: Is this good for saltwater pools?\u003c\/strong\u003e\u003cbr data-end=\"8076\" data-start=\"8073\"\u003eA: Yes. Cupronickel is commonly preferred for saltwater pools and demanding water conditions, provided water chemistry is properly maintained.\u003c\/p\u003e\n\u003cp data-end=\"8315\" data-start=\"8220\"\u003e\u003cstrong data-end=\"8267\" data-start=\"8220\"\u003eQ: What size water connections does it use?\u003c\/strong\u003e\u003cbr data-end=\"8270\" data-start=\"8267\"\u003eA: This heater uses \u003cstrong data-end=\"8314\" data-start=\"8290\"\u003e2\" water connections\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"8407\" data-start=\"8317\"\u003e\u003cstrong data-end=\"8347\" data-start=\"8317\"\u003eQ: What is the flow range?\u003c\/strong\u003e\u003cbr data-end=\"8350\" data-start=\"8347\"\u003eA: The listed flow range is approximately \u003cstrong data-end=\"8406\" data-start=\"8392\"\u003e40–120 GPM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-end=\"8575\" data-start=\"8409\"\u003e\u003cstrong data-end=\"8453\" data-start=\"8409\"\u003eQ: Can this heater be installed indoors?\u003c\/strong\u003e\u003cbr data-end=\"8456\" data-start=\"8453\"\u003eA: It may be installed indoors only when properly vented and installed according to code and manufacturer requirements.\u003c\/p\u003e\n\u003cp data-end=\"8695\" data-start=\"8577\"\u003e\u003cstrong data-end=\"8609\" data-start=\"8577\"\u003eQ: Is this a propane heater?\u003c\/strong\u003e\u003cbr data-end=\"8612\" data-start=\"8609\"\u003eA: No. This model is \u003cstrong data-end=\"8648\" data-start=\"8633\"\u003enatural gas\u003c\/strong\u003e. Propane versions use different model numbers.\u003c\/p\u003e\n\u003cp data-end=\"8827\" data-start=\"8697\"\u003e\u003cstrong data-end=\"8740\" data-start=\"8697\"\u003eQ: Can a homeowner install this heater?\u003c\/strong\u003e\u003cbr data-end=\"8743\" data-start=\"8740\"\u003eA: No. This product is intended to be purchased and installed by pool professionals.\u003c\/p\u003e\n\u003cp data-end=\"8941\" data-start=\"8829\"\u003e\u003cstrong data-end=\"8870\" data-start=\"8829\"\u003eQ: Are returns accepted on this item?\u003c\/strong\u003e\u003cbr data-end=\"8873\" data-start=\"8870\"\u003eA: No. Returns are not accepted on this or any electronic equipment.\u003c\/p\u003e","brand":"Jandy","offers":[{"title":"Default Title","offer_id":53620187660598,"sku":"JXI400NN","price":4299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/JNDJXI400NN_0.avif?v=1769733438","url":"https:\/\/poolsupplydepot.net\/products\/jandy-jxi-natural-gas-heater-399k-btu-cupronickel-exchanger-jxi400nn","provider":"Pool Supply Depot","version":"1.0","type":"link"}