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HydroQuip Spa Heater 2550-0103, Arctic Spa compatible

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HydroQuip Spa Heater 2550-0103 5.5KW

  • 5.5KW@240 V
  • 12" X 2"
  • Flow Thru Heater
  • 48" Cord no plug
  • Power Cord must be wired directly into board
  • Replaces THR-C2550-0103TT
  • Arctic Spas Compatible, Generic replacement not a OEM Arctic Spa Part
  • Hydroquip Part: 48-9120-7P-K


Replaces C2550-0103TT, C2550-0103Z. The new design includes a 48" cord and does not include the pressure switch. It has to be wired directly onto the circuit board

30 Day Warranty


  • 5
    Right part, easy replacement!

    Posted by Keith McDougall on Apr 06, 2021

    Just a couple business days to receive. Precisely the right part and appropriate connectors. Was an easy and problem free install. Many thanks!

  • 5
    Replacement spa heater

    Posted by Susan on Apr 29, 2020

    On the advice of our electrician, we started looking for a new heater for our hot tub. After getting a bit of a runaround from a local dealer, I found this website. The person who answered the phone was so very helpful, and through online and phone, a this heater got ordered. It was exactly the one for our hot tub and we're now up and running. Good purchase, in my opinion