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Jandy JXI400NC
Pool Heater

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Jandy JXI Manual


The JXi™ heater sets the standard in pool and spa heating with unsurpassed energy-efficiency and optional cost-saving Integrated Bypass technology that diverts water flow away from the heater when there is no call for heat. Boasting an 84% thermal efficiency rating and a low-NOx design, the JXi is available in both natural and propane gas models. The JXi also features advanced automation compatibility with AquaLink® systems and iAquaLink™ control, for anytime, anywhere convenience, and an ultra-compact, lightweight design, that allows for faster and easier installation—making it a top choice for pool professionals and pool owners everywhere.


  • Offers up to 20 percent additional energy savings***

  • Automatic actuation of flow bypass valve is based on call for heat and does not require human interaction

  • The flow bypass valve is integrated into the JXi's header, requiring no external plumbing modifications

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