The part number 26-C73-040-0G03 refers to a Hydro-Quip Versi-Heat (often referred to as a "Gecko Replacement") 5.5kW heater assembly.
This specific heater is designed for use on Hydro-Quip MSPA systems with the Versi-Heat option.
Because Hydro-Quip and Gecko parts are frequently used as original equipment (OEM) or as universal replacements, several hot tub manufacturers use or have used this specific part or its compatible control systems:
Primary Hot Tub Manufacturers
Baja Spas: This is one of the most common brands associated with the Versi-Heat style heaters.
Hydro-Quip (MSPA Systems): This heater is the standard component for their MSPA series control packs.
Gecko Alliance (MSPA Series): Many spas equipped with Gecko MSPA or S-Class control systems utilize this heater design.
Other Manufacturers Using Compatible Systems
Spas that use Gecko-based "Remote Heater" or "Versi-Heat" configurations may use this part. These include:
Coast Spas
Great Lakes Spas
Emerald Spas
QCA Spas
Coleman Spas (certain older models with Gecko packs)
Technical Specifications for Verification
If you are replacing a heater, confirm these specifications match your existing unit:
Power: 5.5kW at 230V.
Dimensions: 13" length x 2.25" diameter metal tube.
Connection: Comes with a Mini Molded Cord (approximately 60 inches/5 feet).
Replaces: It is a direct replacement for part numbers 22-C73-040-0G03, 22-00211, 388702, and 610285.
