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Master Spa – Heaters and Replacement Parts

As the #1 supplier of Master Spa replacement parts, we have a huge selection of original OEM Master Spa heaters and hot tub heater replacement parts, including Master Spa heaters, Master Spa heater straps, Master Spa temperature sensors, and more. Most orders ship same day, and we offer free shipping on all orders over $99 in the U.S. If you are unsure about which heater part you need for your spa, compare the first five numbers on your heater (located under the barcode) to the V/N number on our website.

If you need additional assistance, you can always call our Customer Service team at (855) 308-2149. We’re happy to help!

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  1. picture of tool tip icon

    The 12-inch A&B M7 Temp/High Sensor is a replacement sensor for several Spa models including the Clarity, Down East, Contractor, Freedom, Getaway, H2X Swim Spas, Healthy Living Hot Spas, Legacy Whirlpool, Legend Series Master Spas, Michael Phelps Swim Spas and Twilight Series Spas. If you don’t see your model listed, it may still work – so please give our customer service a call!

    master spa temperature gague
  2. picture of tool tip icon

    The 4.0kW Heater (V/N 55950) is a replacement part for selected models of the H2X Swim Spas (Momentum 80, H2X Momentum) and Michael Phelps Swim Spas (Momentum 80)

    Easily installable so you can get back to enjoying your heated Swim spa and hot tub in no time at all.

    4.0kw heater for spa
    Special Price $275.95 Regular Price $285.00
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    5.5 kW Heater w/ Plug

    5.5 kW Heater w/ Plug
  4. picture of tool tip icon

    This is a Balboa P/N 58132 Auxiliary Heater 5.5 kW. This auxiliary heater is plumbed in series with the main spa pack heater and adds 5.5 kW of additional heating power, which typically doubles the heating power and reduces the heating time to half.

    This unit is designed to go with select H2X Swim Spas and Michael Phelps Swim Spas.

    auxilary heater for hot tubs
  5. picture of tool tip icon

    Designed specifically for the Legend Series Master Spas and the Michael Phelps Swim Spas starting with the 2014 model, the Temperature Sensor Mount is a replacement part that will fit the temperature sensor (SKU : 801821). If you don’t see your model listed, it may still work – so please give our customer service a call!

    tmperature sensor mount
  6. picture of tool tip icon

    Designed specifically for 2015 Michael Phelps Swim Spas this sensor is a replacement for the sensor in your spa’s heating system allowing you to control the heat of your spa from the external control panel. If you don’t see your model listed, it may still work – so please give our customer service a call!

    sensor cord for hot tub
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