Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
Jandy R0589405 Heat Exchanger Assembly | JXi 400 Heaters
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
OEM Jandy Heat Exchanger Assembly R0589405 is a vital internal component designed to maintain high efficiency in JXi 400 pool and spa heaters. As the heart of the heating process, the exchanger transfers thermal energy to the water, providing fast and consistent temperature regulation. Constructed from premium, long-lasting materials, it resists degradation from heat, water pressure, and harsh chemical exposure. Replacing an old or failing heat exchanger with this original Jandy part not only revives your heater’s performance but also helps lower energy consumption. It is an essential part of any long-term maintenance plan for keeping your heating system running smoothly and safely.
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Genuine Jandy Replacement: Made to OEM specifications for JXi 400 pool and spa heaters to ensure proper fit and performance
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Optimized Heat Transfer: Enhances heating consistency and energy efficiency by maximizing thermal conductivity
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Durable Construction: Built with corrosion-resistant materials to handle high heat and chemical exposure over extended use
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Restores Heater Efficiency: Replacing a degraded exchanger prevents heat loss, reduces strain on the system, and lowers operating costs
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Essential Maintenance Component: Plays a key role in ensuring optimal heater output and extends the functional life of your unit
- (1) Heat Exchanger
- Jandy JXI 400,000 BTU Heater Models