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JXi Heater 400K BTU Natural Gas
JXi Heater 400K BTU Natural Gas
Item ID: JXi400N
Brand: Jandy

This product cannot be purchased directly on website. Please call for other purchasing options.  


The JXi sets a new standard in pool and spa heating technology with its ultra-compact size, lightweight design, and installation flexibility, making it a top choice for pool professionals and pool owners everywhere. The high-efficiency, low-NOx JXi pool and spa heater is 400,000 BTU and operates on natural gas.

Pro-driven features for the fastest, most customer-friendly pool heater installation include:

Ultra-compact, 2'x2' footprint for small space requirements and maximum installation flexibility*
Lightweight design, weighs less than 126 pounds unpackaged, for easy maneuverability and transport
Best retrofit option, no plumbing adjustments required for quick and easy replacement of MastertempĀ® and Max-E-ThermĀ® heaters
83% thermal efficiency rating and low-NOx design surpasses strict DOE energy-efficiency requirements

*Refer to JXi manual for proper heater clearances that may apply.