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SKU:
NLT2L00206
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No-Fault 6kW Spa Heater 26-C3160-1S 73790 for Hot Spring Watkins Tiger River
$314.99
In Stock
$314.99
Sale price
$314.99
Regular price
This aftermarket double-pass No-Fault spa heater replaces 26-C3160-1S, C3160-1, C3564-1, 73790, and 7211 on compatible 1995-and-newer Watkins, Hot Spring, Tiger River, and Limelight spas.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- 1995-up Hot Spring spas using 26-C3160-1S / 73790
- 1995-up Watkins spas using the matching No-Fault heater
- 1995-2010 Tiger River spas using the matching 6.0/1.5kW heater
- Compatible Limelight spa applications using 73790
- No-Fault 1500, 5500, and 6000 systems when the heater label matches
Product Overview
A spa that circulates normally but will not heat, trips on a leaking element, or shows a confirmed heater fault may need the complete heating tube replaced. This dual-voltage assembly produces 6.0kW on 240V or 1.5kW on 120V in supported installations.
Low flow, dirty filters, air locks, bad relays, sensors, wiring, or control-board faults can produce the same no-heat symptom. Match the heater label exactly and correct circulation problems before energizing the replacement.
Key Features & Performance
- Double-pass heater for compatible Watkins-built spa systems
- 6.0kW output at 240V and 1.5kW at 120V
- Replaces multiple No-Fault 1500, 5500, and 6000 references
- Titanium heating tube design for spa-water service
- Aftermarket complete heater assembly
Replaces Part Numbers
- 26-C3160-1S
- C3160-1S
- C3160-1
- C3564-1
- 73790
- 7211
Common Uses
- Replacing a heater element that has failed continuity or insulation testing
- Repairing a leaking double-pass heater tube
- Restoring spa heat after flow and control diagnostics
- Updating a compatible discontinued No-Fault heater style
Technical Specifications
- Product Type: Double-pass spa heater assembly
- Output at 240V: 6.0kW / approximately 25A
- Output at 120V: 1.5kW / approximately 12.5A
- Plumbing: 3/4-inch vinyl-hose connections on matching systems
- Material: Titanium heating assembly
- Replacement Type: Aftermarket
Installation & Fitment
- Shut off spa power at the breaker and verify it is de-energized
- Match the full heater label, voltage, wattage, ports, sensors, and plumbing
- Correct dirty filters, closed valves, air locks, weak pumps, and low-flow conditions
- Keep electrical connections dry and follow bonding and grounding requirements
- Fill and purge the plumbing completely, check for leaks, then test current draw and temperature controls
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model names and year ranges are a starting point. Match the original reference number, configuration, connections, mounting points, and product-specific details before ordering.
Frequently Asked Questions
Q: Can this heater run on 120V? A: Yes, in an approved matching system it operates at about 1.5kW; on 240V it is rated 6.0kW.
Q: Does a no-heat spa always need a heater? A: No. Flow, sensors, relays, wiring, controls, and configuration must also be tested.
Q: Can I energize it before the plumbing is full? A: No. Dry firing can destroy a heater and create a serious electrical hazard.
Part Summary
keywords: 26-C3160-1S spa heater, 73790 Hot Spring heater, C3160-1 Watkins replacement, No-Fault 6000 heater repair, Tiger River hot tub no heat, 6kW 240V spa heater, 1.5kW 120V hot tub heater, aftermarket Watkins double pass heater
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.