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SP03 - PTC Heater Service Pack & AirJet Descaler

Service Pack Three (SP03)


  • 1x Spa Workshop Descaler
  • 1x Air Blower Coupler Gasket (A Connector)
  • 2x Water Coupler Washers (B+C Connectors)
  • 3x Descaling Tablets
  • 2x PTC Heater Gaskets
  • 1x Flow Sensor Gasket
  • 12x PTC Heater Screws
  • 1x Metal Brush


For Legacy Egg Shaped Pumps


  • 1x PTC Heater Thermostat Gasket (Legacy Egg Pumps)
  • 1x Flow Sensor Gasket


This product has been designed by The Spa Workshop Ltd and is manufactured in the United Kingdom. 

SP03 - PTC Heater Service Pack & AirJet Descaler

SKU: SP03 - 5065013719023
VAT Included |
  • If your aluminium block PTC heater assembly is leaking, this would suggest the gaskets are life expired.  Over time a combination of chlorine and mineral deposits cause the seals to become brittle and fail.  This often starts out as a small drip and eventually becomes a constant flow!  As long as you are confident with a screwdriver, the gaskets are relatively straightforward to replace and the service pack contains all the parts you will need.

    Our AirJet Pump descaling solution acts as a versatile aid, functioning as a miniature hot tub for pump descaling and testing purposes. This feature allows you to diagnose and resolve issues, including leaks, worn-out components, and error codes. Additionally, it serves as a remedy for preventing FreezeGuard related initialization problems, which may trigger an E02 or E03 error when inflating your spa during colder weather.


    Regular descaling of your pump will help improve water flow by eliminating calcium deposits from critical components such as the heater, circulation pump, and flow sensor.


    Our Service Pack Three (SP03) includes three descaling tablets and a replacement set of external gaskets as these often perish through contact with chlorine.  In addition you will receive all the parts you will need to fully service your aluminium PTC heater assembly and flow sensor housing.  The kit is compatible with AirJet pumps of both legacy 'egg' and newer flip up display designs.

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