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Hot Tub Heaters


Therm Products, 25-4020, Heating Element, (2.0kW), Flo-Thru, Middle

Therm Products, 25-4020, Heating Element, (2.0kW), Flo-Thru, Middle
  • Manufactured by: Therm Products
  • Part Number: 25-4020

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Item Number: 21-2000

  • Description
  • Details
  • Reviews
This Therm Products 25-4020 (flo-thru, middle) heating element is most commonly used in spas, bathtubs, hot tubs and saunas.

It is not recommended to use a higher kilowatt rating than specified on your heater tube.
Product Specs
  • Manufacturer: Therm Products
  • Part number: 25-4020
  • Kilowatt Rating (kW): 2.0kW
  • Voltage: 120V
  • Type: Flo-Thru, Middle
  • Terminal base size: 0.5" Dia.
  • Terminal spacing: 1.25"
  • Length: 7-1/4"
Additional Information
This Therm Products flo-thru middle (loop) terminal 2.0kW heating element comes with hardware nuts and rubber washers.
Hot Tub & Spa Manufacturers
The 25-4020 flo-thru middle element is used in many heater assemblies for the following manufacturers and more.
  • Balboa Water Group
  • Balboa Instruments
  • Balboa Bath
  • Beachcomber
  • Costco
  • Hydro Spa
  • HydroQuip Bath
  • Jacuzzi Bath
  • Therm Products
  • Thermo Spas
  • ThermoCore
  • Whirlpool

  • Manufactured by: Therm Products
  • Part Number: 25-4020
  • Item Number: 21-2000


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