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  • Covers
  • Diverter Valves
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  • Filter Lids
  • Filter Parts & Assemblies
  • Filters
  • Gate Valves
  • Grab Bars
  • Hardware
  • Heaters
  • Hoses
  • Jet Parts & O-Rings
  • Jets
  • Lighting
  • Maintenance
  • Ozonator & Ozone Parts
  • Pillows & Headrests
  • Plumbing Fittings
  • Plumbing Manifolds
  • Pump Parts & O-Rings
  • Pumps
  • Steps
  • Skirt Parts
  • Soft Tread Flooring
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    • Swim Spa Heaters

    Shopping for a replacement heater for your Michael Phelps Swim Spa just got easier! We have a large variety of new factory-direct models available in stock.   We sell only genuine factory H2X and Michael Phelps Swim Spa Heaters, never used or refurbished units. 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.

    MasterSpaPartsOnline.com offers free shipping on US Orders over $99.00 and offers Customer Service at 1-888-946-8882 to answer any questions you may have. Please have Spa Serial Number or year, make and model available for reference.

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