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Jandy LXi Heater Replacement Parts Diagram

Interactive parts diagram

81 parts · 1 with cheaper aftermarket options. Tap a number on the diagram, or search by part number.

 – exploded view with numbered parts

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Heater made before July 2009? Show older parts
Older parts

    • Not sold online Jandy complete heat exchanger (polymer/copper): 250K BTU R0453303; 300K BTU R0453304; 400K BTU R0453305 (discontinued) R0453303 / R0453304 / R0453305Call us and we'll get it for you.
    • Not sold online Jandy tube assembly (Cu), with hardware and gaskets: 250K BTU R0453403; 300K BTU R0453406; 400K BTU R0453405; LXi ASME compliant heat exchanger tube assembly, CuNi: 250K BTU R0477003; 300K BTU R0477006; 400K BTU R0477005 R0453403 / R0453406 / R0453405Call us and we'll get it for you.
    • Not sold online Jandy heat exchanger end baffles: 250K BTU R0453503; 300K BTU R0453504; 400K BTU R0453505 (discontinued) R0453503 / R0453504 / R0453505Call us and we'll get it for you.
    • Not sold online Jandy front header, with hardware and gaskets (discontinued) R0453600Call us and we'll get it for you.
    • Not sold online Jandy bypass assembly with O-ring R0453800Call us and we'll get it for you.
    • Not sold online Jandy spring, bypass R0453900Call us and we'll get it for you.
    • Not sold online Jandy rear header, with hardware and gaskets R0454200Call us and we'll get it for you.
    • Not sold online Jandy gasket, header (front or rear), 16/pk R0454300Call us and we'll get it for you.
    • Not sold online Jandy gasket, header (front or rear), 16/pk R0454300Call us and we'll get it for you.
    • Not sold online Jandy return header cap and O-ring (discontinued) R0454600Call us and we'll get it for you.
    • Not sold online Jandy manifold, gas, natural gas (low altitude): 250K BTU R0454803; 300K BTU R0454804; 400K BTU R0454805; manifold, gas, LP (low altitude): 250K BTU R0455003; 300K BTU R0455004; 400K BTU R0455005 R0454803 / R0454804 / R0454805Call us and we'll get it for you.
    • Not sold online Jandy flue collector with gaskets: 250K BTU R0455503; 300K BTU R0455504; 400K BTU R0455505 (discontinued) R0455503 / R0455504 / R0455505Call us and we'll get it for you.
    • Not sold online Jandy air orifice adjust bracket (discontinued) R0455700Call us and we'll get it for you.
    • Not sold online Jandy flue vent assembly with gasket, July 2009 and newer: 250K BTU R0495503; 300K BTU R0495504; 400K BTU R0495505 R0495503 / R0495504 / R0495505Call us and we'll get it for you.
    • Not sold online Jandy flue vent assembly with gasket, before July 2009: 250K BTU R0455803; 300K BTU R0455804; 400K BTU R0455805 (discontinued) R0455803 / R0455804 / R0455805Call us and we'll get it for you.
    • Not sold online Jandy hot plate, split plate, July 2009 and newer: 250/300K BTU R0495401; 400K BTU R0495402 (discontinued) R0495401 / R0495402Call us and we'll get it for you.
    • Not sold online Jandy outdoor grill, before July 2009: 250/300K BTU R0456001; 400K BTU R0456002 (discontinued) R0456001 / R0456002Call us and we'll get it for you.
    • Not sold online Jandy flue box assembly with gasket (discontinued) R0456200Call us and we'll get it for you.
    • Not sold online Jandy gasket, temperature sensor (discontinued) R0456600Call us and we'll get it for you.
    • Not sold online Jandy nut, sensor retainer R0523900Call us and we'll get it for you.
    • Not sold online Jandy water pressure switch tubing R0457100Call us and we'll get it for you.
    • Not sold online Jandy high-limit plug (set of 3) R0456800Call us and we'll get it for you.
    • Not sold online Jandy bracket, fusible link R0337200Call us and we'll get it for you.
    • Not sold online Jandy door with latch: 250K BTU R0458703; 300K BTU R0458704; 400K BTU R0458705 (discontinued) R0458703 / R0458704 / R0458705Call us and we'll get it for you.
    • Not sold online Jandy door latch assembly with handle R0334900Call us and we'll get it for you.
    • Not sold online Jandy panel, side, left R0458800Call us and we'll get it for you.
    • Not sold online Jandy panel, side, right (discontinued) R0458900Call us and we'll get it for you.
    • Not sold online Jandy panel, bottom, header in/out R0459000Call us and we'll get it for you.
    • Not sold online Jandy panel, top, header in/out (discontinued) R0459100Call us and we'll get it for you.
    • Not sold online Jandy panel, side, return header (discontinued) R0459200Call us and we'll get it for you.
    • Not sold online Jandy panel, side support (discontinued) R0459300Call us and we'll get it for you.
    • Not sold online Jandy rear panel: 250K BTU R0459803; 300K BTU R0459804; 400K BTU R0459805 R0459803 / R0459804 / R0459805Call us and we'll get it for you.
    • Not sold online Jandy vent back cover: 250/300K BTU R0459401; 400K BTU R0459402 (discontinued) R0459401 / R0459402Call us and we'll get it for you.
    • Not sold online Jandy top assembly, split flue, July 2009 and newer: 250K BTU R0495303; 300K BTU R0495304; 400K BTU R0495305 (discontinued) R0495303 / R0495304 / R0495305Call us and we'll get it for you.
    • Not sold online Jandy top assembly, before July 2009: 250K BTU R0459503; 300K BTU R0459504; 400K BTU R0459505 (discontinued) R0459503 / R0459504 / R0459505Call us and we'll get it for you.
    • Not sold online Jandy front, support door: 250K BTU R0459903; 300K BTU R0459904; 400K BTU R0459905 R0459903 / R0459904 / R0459905Call us and we'll get it for you.
    • Not sold online Jandy housing air chamber: 250K BTU R0460003; 300K BTU R0460004; 400K BTU R0460005 R0460003 / R0460004 / R0460005Call us and we'll get it for you.
    • Not sold online Jandy cover, air chamber: 250K BTU R0460103; 300K BTU R0460104; 400K BTU R0460105 R0460103 / R0460104 / R0460105Call us and we'll get it for you.
    • Not sold online Jandy cover, manifold R0460200Call us and we'll get it for you.
    • Not sold online Jandy grommet seal 2" R0460300Call us and we'll get it for you.
    • Not sold online Jandy air duct R0460500Call us and we'll get it for you.
    • Not sold online Jandy LXi inlet/outlet bronze header: 250K BTU R0476603; 300K BTU R0476606; 400K BTU R0476605 R0476603 / R0476606 / R0476605Call us and we'll get it for you.
    • Not sold online Jandy LXi return header, bronze R0476700Call us and we'll get it for you.
    • Not sold online Jandy LXi heat exchanger hardware kit, bronze R0477200Call us and we'll get it for you.
    • Not sold online Jandy LXi I/O header bypass assembly with hardware (bronze headers): 250K BTU R0476803; 300K BTU R0476805; 400K BTU R0476806 R0476803 / R0476805 / R0476806Call us and we'll get it for you.
    • Not sold online Jandy LXi bypass spring (bronze headers): 250K BTU R0476903; 300K BTU R0476906; 400K BTU R0476905 R0476903 / R0476906 / R0476905Call us and we'll get it for you.
    • Not sold online Jandy LXi bypass gasket (bronze headers) R0011400Call us and we'll get it for you.
    • Not sold online Jandy LXi temp sensor mounting bracket (bronze headers) R0477400Call us and we'll get it for you.
    • Not sold online Jandy LXi tube assembly, pressure switch (bronze headers) (discontinued) R0477500Call us and we'll get it for you.
    • Not sold online Jandy LXi heat exchanger flange & gasket (set of 2) (bronze headers), superseded by R0461500 (discontinued) R0477600Call us and we'll get it for you.
    • Not sold online Jandy LXi heat exchanger flange bolts (bronze headers) (discontinued) R0477800Call us and we'll get it for you.
    • Not sold online Jandy LXi in/out header plug, 3/4" NPT (bronze headers) R0477900Call us and we'll get it for you.
    • Not sold online Jandy LXi bronze header drain plug R0478000Call us and we'll get it for you.
    • Not sold online Jandy LXi bronze header drain plug R0478000Call us and we'll get it for you.
    • Not sold online Jandy heat exchanger complete, bronze, Cu: 250K BTU R0500503; 300K BTU R0500504; 400K BTU R0500505; heat exchanger complete, bronze, CuNi: 250K BTU R0500603; 300K BTU R0500604; 400K BTU R0500605 R0500503 / R0500504 / R0500505Call us and we'll get it for you.

Don't see your part? Ask us and we'll find it.

Also fits your Jandy LXi Heater

Not shown on the diagram, but made for this pump.

Fit guide

Which LXi part fits your heater?

Find the size (250, 300 or 400) and fuel (N natural gas, P propane) in the model number on the rating plate, for example LXi250N or LXi400P. Part numbers come from the LXi Low NOx parts list in the Fluidra 2026 catalog. Most electrical and control parts are the same on all three sizes.

Heat exchanger by heater size

  • 250KR0453303LXi250 polymer headers · bronze headers Cu R0500503, CuNi R0500603
  • 300KR0453304LXi300 polymer headers · bronze headers Cu R0500504, CuNi R0500604
  • 400KR0453305LXi400 polymer headers · bronze headers Cu R0500505, CuNi R0500605

Gas parts by fuel

Gas valve natural gas
R0455200
Gas valve propane (LP)
R0455300
Gas manifold, natural 250 / 300 / 400
R0454803 / R0454804 / R0454805
Gas manifold, propane 250 / 300 / 400
R0455003 / R0455004 / R0455005

High limits and sensor

High-limit set 130°F + 150°F
R0457200
High limit 130°F
R0457300
High limit 150°F
R0023000
Temperature sensor regular
R0456500

Made before or after July 2009?

Before July 2009

  • Top assembly 250 / 300 / 400: R0459503 / R0459504 / R0459505
  • Outdoor grill: R0456001 (250, 300), R0456002 (400)
  • Flue vent assembly: R0455803 / R0455804 / R0455805

July 2009 and newer (split flue)

  • Top assembly 250 / 300 / 400: R0495303 / R0495304 / R0495305
  • Hot plate, split plate: R0495401 (250, 300), R0495402 (400)
  • Flue vent assembly: R0495503 / R0495504 / R0495505

The lower drawing shows the water-side parts for heaters with polymer headers. Heaters with bronze headers use items 73 to 85 instead.