The Jandy JXi 260K BTU Heat Exchanger Tube Replacement (R0589403) is a replacement heat exchanger tube assembly for Jandy JXi 260,000 BTU pool and spa heaters. The heat exchanger transfers combustion heat to pool water. Replace when the heat exchanger is cracked or leaking, indicated by water in the combustion chamber or exhaust condensate. Professional installation required. Genuine Jandy replacement for JXi 260K heater models.
