Zodiac Equipment

The Total Package Pool & Spa Heater

JXi™ with Versa Flo 


The Total Package Pool & Spa Heater

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 available in three BTU sizes, 200K, 260K, 399K, and offered in both natural and propane gas models.

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 Mastertemp® and Max-E-Therm® heaters
  • 84% thermal efficiency rating and low-NOx design surpasses strict DOE energy-efficiency requirements**

VersaFlo Integrated Bypass technology for JXi available installed from the factory (select models) or as an easy retrofit to any JXi on site.
  • 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
  • The hydraulic savings of VersaFlo make it the perfect complement to Versa Plumb®, which reduces plumbing costs and maximizes energy efficiency in the smallest footprint available


  • Ultra-Compact Lightweight Design - Easy to store, transport, and install, the JXi pool and spa heater is 38% lighter with a 28% smaller footprint.
        *Smaller footprint compared to major competitor models
  • Flexible Installation - 180° rotatable top so you never need to rotate headers.
  • Versa Plumb-Ready - Installation in the Versa Plumb system reduces plumbing costs and increases energy efficiency, all using the smallest footprint available. Sweep elbow included in all JXi models
  • Easy Access - Electrical panel flips up for ease of service.
  • Easy Replacement - 3-port header for easy plumbing and drop-in replacement of MasterTemp, Max-E-Therm, and Jandy Pro Series pool heaters.
  • Sidewall Ventilation - Provides versatility and ease of installation.
  • High-Efficiency Gas Train and Heat Exchanger Design
               Copper fin heat exchanger tubes for efficient heat transfer
               Single stainless steel burner with robust design
               Blower-driven gas and air mix for reliable performance
               Hot surface ignitor for consistent start-ups
  • User-Friendly Control - Digital interface for effortless temperature control and diagnostics with run-time and cycle meter.
Technical Details
  • Corrosion-resistant stainless steel header bar for extreme heat exchanger durability.
  • Venturi-driven air and gas mix for enhanced performance.
  • Reliable, balanced flow and temperature control with thermal regulator valve.
  • Differentiated limit switches meet applicable product safety standards.
  • Corrosion-resistant temperature sensors for reliable operation.


Model Number     Firing Rate      Heater Width       Vent Diameter     Depth      Height      Weight      Min. GPM      Max. GPM
JXi200                     200K BTU              22.9"                    6" (15cm)        22.1"        26.5"        117 lbs*          20                  120
JXi260                     260K BTU              22.9"                    7" (18cm)        22.1"        26.5"        120 lbs            25                  120
JXi400                     399K BTU              22.9"                    8" (20cm)        22.1"        26.5"        126 lbs            40                  120

*Actual weight may vary.


Brochure: JXI Heater

JXI with Versa Flo Sell Sheet