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Double-Barrel Low-Flo Heater Assembly, 6.0KW, C3564-1

Replacement 6.0KW Double-Barrel Low-Flo Heater Assembly. OEM part number C3564-1.


Optional replacement heater for Watkins 6.0KW No-Fault® low flow dual metal tube heater assembly, 73790, C3160-1, 72795 and for many 1995 to current Hot Spring® and Tiger River® spas made by Watkins. This heater is also a great replacement option for the old trumpet-style Laing Infinity 7211, 6759, IHH-6000-NHCW, IHH-6000-NHCW-7211, SSE-000-0H-0F and 0927501 Triple Bend heaters that is obsolete.

SpaGuts P/N: 25-250-1020


  • 6.0KW 220V, 1.5KW 110V
  • #800 Incoloy Element
  • In/Out Barbed Hose Connections
  • 1/4 inch tubing connection
  • Threaded Ports for two sensors (sensors not included)
  • Manual Reset Button (Hi-Limit Protection)
  • 46-inch Heavy Duty 10AWG 3-wire cord with 1/4 inch female terminals
  • Ground Lug
  • UL and CUL certifications
  • Dimensions: 19.8 inches long x 3 inches width x 4.72 inches height (approx.)

NOTE1: Customer must use the original sensors for the sensor ports.

NOTE2: This heater does not have the second set of small cable for the pressure switch. If using as a replacement for the original heater that does have the pressure switch cable, just bypass the pressure switch circuit for the new heater.

This item comes with a 1-Year limited warranty.

Click here to View Diagram of Heater.