HEATER MANIFOLD Saratoga 26-H3037-5S-K

HydroQuip 26-H3037-5S-K | 4.0kW Gecko/Arctic Replacement Heater

The 26-H3037-5S-K is a high-reliability, 13-inch Flo-Thru heater designed to replace the original Gecko 25-0030-C and B2404-0001 assemblies. It is built to handle the higher flow rates of Arctic Spas' proprietary plumbing while maintaining a compact footprint.

Featuring a high-grade Incoloy 800 heating element, this unit is designed to resist the mineral scale and chemical "pitting" that often plagues standard heaters in high-use environments.

Key Features

• Gecko System Optimized: A direct bolt-in for Gecko S-Class and M-Class control systems, as well as several Arctic Spa models.

• 13-Inch Compact Tube: Specifically sized for systems where a standard 15-inch tube is too long and a 12-inch tube is too short.

• 4.0kW Heating Power: Provides efficient heating for mid-to-large spas, operating at 4.0kW @ 240V or 1.0kW @ 120V.

• Offset Terminals: Terminals are positioned to match the specific wiring harness layouts of Gecko-style control boxes, reducing wire strain.

• Pressure Switch Port: Includes a 1/8" NPT tap for a standard pressure switch (essential for Gecko systems that do not use M7 sensors).

Technical Specifications

Pro Tip: The Gecko "Flow" Issue

If you are replacing this heater because of a "FLO" error code on your Gecko topside panel, it is usually caused by a faulty pressure switch. This heater kit does not include the pressure switch, so it is the perfect time to transfer your old one (if it's working) or upgrade to a new Tecmark 3902 or 4010P switch for a fresh start.

What's in the Box?

• 13" Stainless Steel Heater Manifold

• 4.0kW Incoloy Element (Pre-installed)

• Two 2" Split Nut Unions

• Two 2" Gaskets