Finding a reliable heater element is essential to keep your hot tub delivering consistent warmth. This guide reviews five compatible replacements designed for Hot Spring, Watkins, Tiger River, Limelight, and similar no-fault systems. Each option highlights compatibility, power ratings, and installation considerations to help you choose the right element for your spa’s voltage and flow requirements.
| Product | Brand | Voltage | Power | Key Benefit |
|---|---|---|---|---|
| Camoo 26-C3160-2S | Camoo | 120/240V | 1.0kW / 4.0kW | Double-barrel, titanium, high compatibility |
| Camoo 26-C3160-1S | Camoo | 120/240V | 1.5kW / 6.0kW | Titanium, broad model coverage |
| Autopartsfreer 26-C3160-1S | Autopartsfreer | 120/240V | 1.5kW / 6.0kW | Titanium build, safety features |
| Flynsu 26-C3160-1S | Flynsu | 120/240V | 1.0kW / 6.0kW | Broad compatibility, reliable 6kW option |
| JUFZQO 73791 26-C3160-2S | JUFZQO | 120/240V | 1kW / 4kW | Automatic reset, dual-barrel design |
Camoo 26-C3160-2S Double-Barrel Replacement

Application compatibility spans numerous 1995 to current Watkins No-Fault, Hot Springs, Tiger River, Hot Spot, Caldera, and Laing tri-bend spa models. This direct replacement covers cross-reference matrices such as 26-C3160-2S and 73039, with 4.0KW at 240V and 1.0KW at 120V. Built to handle a 8 GPM flow rate, it uses titanium for corrosion resistance and ships with a 1/4 inch tubing connection kit. It is designed to operate with a 3-wire cord for flexible installation.
Camoo 26-C3160-1S Double-Barrel Titanium Heater

This 6KW unit replaces classic Watkins and Hot Springs cross-reference models such as 26-C3160-1S and 73790. Featuring titanium construction and a dual-barrel design, it supports 8 GPM flow and runs at 6KW/240V or 1.5KW/120V. The replacement is compatible with numerous No-Fault systems, including older Laing configurations, and emphasizes safe operation and long service life with corrosion resistance.
Autopartsfreer Upgraded 26-C3160-1S Titanium Heater

An upgraded 6kW/240V, 1.5kW/120V titanium heater designed for 1995+ Hot Spring, Watkins, and Limelight spa models. It’s marketed as a direct replacement for a wide range of cross-reference parts (C3160-1S, C3564-1, 73790, 7211), with built-in safety features and a focus on safe, reliable operation. The unit’s titanium body helps resist corrosion and extend service life, with recommended professional installation for optimal performance.
Flynsu 26-C3160-1S Hot Tub Heater

Designed for Hot Spring Spa Heaters and Tiger River Watkins systems, this 6kW unit replaces part numbers including 26-C3160-1S, C3160-1, C3564-1, 73790, and 7211. It supports 8 GPM flow, with 4kW at 240V and 1kW at 120V. The titanium construction aims at durability and safety, with an emphasis on fast heating and reliable operation in varied spa environments.
JUFZQO 73791 26-C3160-2S Replacement

Equipped with automatic reset protection, this double-barrel heater handles 4kW at 240V and 1kW at 120V with 8 GPM flow. The unit includes a dual-barrel design to improve efficiency and offers safety features that automatically halt heating at high temperatures and resume once safe. It’s positioned as a compatible option for Watkins, Hot Springs, and Tiger River models within the No-Fault family.
Virego 4kW 26-C3160-2S Replacement

Direct replacement for Watkins/Hot Spring cross-reference matrices, this 4kW/240V and 1kW/120V dual-barrel heater uses titanium for corrosion resistance and supports an 8 GPM flow. It advertises quick heating and a robust build for spas, hot tubs, and inflatable pools, aiming to deliver dependable warmth with a compact, dual-barrel design.
Buying Guide: Key Considerations For Choosing A Heater Element
When selecting a hot tub heater element, consider compatibility with your spa’s model and existing cross-reference numbers (such as 26-C3160-2S, 26-C3160-1S, 73039, 73791, 6758, etc.).
- Voltage and power: Ensure the unit supports 120V or 240V and matches the intended wattage (1kW, 4kW, 1.5kW, 6kW). A dual-barrel design often provides flexibility for different heating needs.
- Flow rate: Most replacements target about 8 GPM. Verify your spa’s flow rate to prevent overheating or insufficient heating.
- Material and durability: Titanium or titanium-coated elements offer superior corrosion resistance in chlorinated environments and extend service life.
- Safety features: Look for automatic reset protection and overheating safeguards to minimize risk and downtime.
- Installation: Some replacements are best installed by a qualified technician to ensure proper wiring and connection to the spa’s control system.
- Compatibility coverage: Manufacturers often list broad model compatibility; confirm the exact part numbers on your heater data label before purchasing.
Choosing the right heater element involves aligning electrical specifications, flow requirements, and spa brand compatibility. Each option above provides a pathway to restore warmth with varying degrees of power, material quality, and cross-reference coverage. For most users, a titanium, dual-barrel model with 8 GPM compatibility offers a reliable balance of efficiency and durability.