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South Seas Heaters

No heat with good flow points to the heater element — but dirty filters and sensors mimic heater failure, so rule those out before ordering.

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✅ Not Sure It Fits? Verify Before Ordering

Hot tub part compatibility can vary by spa brand, model, year, serial number, control system, and part revision.

To help us identify the correct replacement part, please send clear photos of:

  • Your existing part label or sticker
  • Your spa serial number sticker
  • The equipment area or installation location (if accessible)

EZ Hot Tub Parts can help confirm fitment before you order and help reduce costly returns.

Confirm Your South Seas Spas Model

519P | 532L | 533DL | 627M | 729B | 729L | 737BE | 737LE | 743D | 748B | 748L | 840BE | 840LE | 850B | 850L | 853DL | 860B | 860L | 965L

How do I know if my South Seas spa heater needs to be replaced?

Common signs include water that won’t reach temperature, tripping breakers, or error codes on your control panel — check for FLO or OH fault codes on the display. South Seas spas run Balboa systems before 2021 and Gecko systems on serial numbers 21XXXXX and later.

Are these heaters compatible with Balboa control systems?

Yes. South Seas Spas are built by Artesian Spas on Balboa systems before 2021 and Gecko systems from serial 21XXXXX onward. Match your replacement heater to your spa pack — verify by serial number before ordering.

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