{"product_id":"jandy-jxi-jxi400pn-propane-pool-spa-heater-399-000-btu-cupronickel","title":"Jandy JXi JXI400PN Propane Pool \u0026 Spa Heater - 399,000 BTU - Cupronickel","description":"\u003cp\u003eJandy JXi JXI400PN high-performance Low-NOx propane pool and spa heater with a durable cupronickel heat exchanger for enhanced corrosion resistance.\u003c\/p\u003e\u003ch3\u003eModel details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHeating capacity: 399,000 BTU\u003c\/li\u003e\n\u003cli\u003eFuel type: Propane (LP)\u003c\/li\u003e\n\u003cli\u003eHeat exchanger: Cupronickel (CuNi)\u003c\/li\u003e\n\u003cli\u003eThermal efficiency: 83%\u003c\/li\u003e\n\u003cli\u003eWeight: 126 lb\u003c\/li\u003e\n\u003cli\u003eVent diameter: 8 in.\u003c\/li\u003e\n\u003cli\u003eWater flow range: 30–100 GPM\u003c\/li\u003e\n\u003cli\u003eCompact JXi design for pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFuel and heater sizing\u003c\/h3\u003e\u003cp\u003eThis is the propane configuration. Confirm that your supply matches before ordering. Gas-heater BTU input is the fuel input rating; usable heat output also depends on thermal efficiency. Pool volume, starting water temperature, desired warm-up time and heat loss determine the capacity needed.\u003c\/p\u003e\u003ch3\u003eInstallation requirements\u003c\/h3\u003e\u003cp\u003eA qualified installer should confirm gas-line capacity and pressure, electrical supply, water flow, equipment clearances and installation altitude. Indoor installations need the correct manufacturer-approved venting arrangement. Check the existing pad and plumbing connection positions when replacing another heater; matching BTU size alone does not guarantee a direct fit.\u003c\/p\u003e\u003ch3\u003eComplete the installation\u003c\/h3\u003e\u003cp\u003eSite-specific gas fittings, electrical work, venting accessories and installation labor are separate.  Maintain the manufacturer's water-balance targets and keep the circulation system in good condition to protect the heat exchanger.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.jandy.com\/en\/products\/pool-heating\/heaters\/jxi\" target=\"_blank\" rel=\"noopener\"\u003eManufacturer specifications and installation documents\u003c\/a\u003e\u003c\/p\u003e","brand":"Mikan Supply","offers":[{"title":"Default","offer_id":44801166901290,"sku":"LAR-15-837","price":5045.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/6875\/8570\/files\/heater-jxi400n-epool-2_96728b5a-4172-4b62-bc34-bb350fc81736.png?v=1790308101","url":"https:\/\/mikanpool.com\/products\/jandy-jxi-jxi400pn-propane-pool-spa-heater-399-000-btu-cupronickel","provider":"MIKAN POOL SUPPLIES","version":"1.0","type":"link"}