Independent Supplier & Replacement Part Notice
We are an independent parts supplier and are not affiliated with, sponsored by, or endorsed by Watkins, Hot Spring, Caldera, Tiger River, or Solana. These names and their part numbers are used only to identify compatibility.
We offer replacement parts as alternatives to spa-branded parts. When this listing identifies a part as the same original-manufacturer replacement, it is supplied under the component manufacturer’s branding and part number, which may differ from the Watkins or spa-brand label and number. Other compatible alternatives are identified in the individual product listing. Please review the listed specifications, fitment details, and any installation differences before ordering.
This heater is the exact generic replacement for the original Watkins No Fault 4000 HTP76228 heater...This model does not include a pressure switch. If you have a gray wire with a small white or red connector on it then you have a pressure switch which can be jumped at the board using the pressure switch jumper.
New models include the heater, two new current model sensors and the 2 wire pigtail.
| Heater Application | Watkins Generic Replacement |
| Kilowatts | 1.5kW |
| Low Flow Heater Assy Style | Stainless Steel |
| Heater Inlet Size | 3/4" |
| Heater Inlet Type | Barb (b) |
| Heater Outlet Size | 3/4" |
| Heater Outlet Type | Barb (b) |
This heater is also a superior replacement for the Laing Tri-Bend heater #6759 pictured below.
- Streamlined double-pass design
- Superior performance
- Manual reset Hi-Limit
- 4kW heater rating
- Incoloy heater element
- Threaded holes for sensors (sensors not included)
- Terminated wires on power cord
- 1-Year Manufacturer limited warranty
Below is a list of related parts click on the links for each part:
No Fault Heater Manifold Kit, Watkins Double Barrel Heaters, HotSpring, Tiger River
No Fault Heater Gasket Kit, Watkins Double Barrel Heaters, HotSpring, Tiger River
No Fault Heater Barb Kit, Watkins Double Barrel Heaters, HotSpring, Tiger River
Watkins Hotspring Tiger River, Heater, Low Flow, No Fault 4000, 230v, 4.0kW, Generic
Watkins Hotspring Tiger River, Heater, Low Flow, No Fault 6000, 230v, 6.0kW, Generic
Watkins Hotspring Tiger River, Heater with Sensors, Low Flow, No Fault 4000, 230v, 4.0kW, Generic
Watkins Hotspring Tiger River, Heater with Sensors, Low Flow, No Fault 6000, 230v, 6.0kW, Generic
Sensor Kit, Hotspring, Tiger River, Caldera, Watkins Hi-Limit & Temp, with O-Rings, New Style 2002+
Pump, Laing, Circulation, Series E5, 115v/230v, 3/4"b, Watkins , Hotspring, Tiger River, Limelight
