This is a generic replacement heater designed to work with the IQ2000 control box by Watkins Manufacturing only. An easy method of determining which version you have is to look at the sensors and where they attach to the control system. If they plug into the outside of the control box, it is an IQ2000 system. If they plug directly into the circuit board, it is an IQ2020 system.
Control and Limit sensors on the inlet and outlet with 52" cords
Features a push button reset high limit switch set to trip at 130°F
48" power cord
316L Stainless Steel Housing
Contains a titanium element
6-8 gpm minimum flow rate required


Low Flow Heater Assy Style    Stainless Steel
Heater Inlet Size    3/4"
Heater Inlet Type    Barb (b)
Heater Outlet Type    Barb (b)

A section of 3/4" tubing, 4 clamps, and a 3/4" barbed coupling are included to facilitate retro-fit. Length of tubing necessary will vary by model of tub. It will also be necessary to plug the positive drain line that attached to the OEM heater.

Per Watkins tthe old style heater was DISCONTINUED-No Fault 6000 Tri-Bend

REASON: The No Fault 6000 Tri-Bend Heater has been discontinued by Watkins Manufacturing mid year of 2006. Disappointing performance, especially in colder climates, among other reasons has led to permanently retiring this heater style made by Laing. Watkins engineers recommend, with all smiles, the PDR heater (shown on the "heater replacements" page) as the universal heater replacement for all 1995-2002 Hot Spring & Tiger River spa models. The PDR Titanium No Fault heaters have proven more durable and efficient than any of their predecessors…ever!

This is what the old heater looked like: