Gecko heat.wav 4.0kW Spa Heater for IN.XE Control Systems delivers a dependable, field-ready heating solution designed to replace older units like T9920-101535 with a compact, high-performance design. Built for spa environments, this heater leverages Gecko’s heat.wav technology to deliver consistent warmth while simplifying service and maintenance. Why this heater stands out
- Integrated reliability: No separate pressure switch means fewer components to fail, while in.flo dry-fire protection guards the element during low-water or dry-running scenarios. This combination helps extend heater life and reduces maintenance calls.
- Flexible power configuration: Shipped in a 230V/4.0kW setup, but easily convertible to 115V/1.0kW via a simple cable-port switch. This makes it a versatile upgrade or replacement that can adapt to different electrical environments without swapping hardware.
- Precise, compact design: Straight heater configuration with a 15" length and a 2" heater size fits tight spa footprints while delivering steady heat. Lead end terminal location at 5-7/8" ensures straightforward wiring and installation.
- Direct replacement option: Specifically designed as a replacement for the T9920-101535 model, ensuring compatibility with existing IN.XE control systems and spa plumbing without extensive alterations.
- Robust construction for spa use: Fixed mounting studs and a straightforward plug-and-play approach reduce install time, so you can get back to enjoying warm, inviting water quickly. Key specifications at a glance
- Model: HEAT WAV - XE - 4 - 240 - 2 - INC - IF -T
- Power options: 230V at 4.0 kW; convertible to 115V at 1.0 kW
- Electric configuration: IN.XE control systems compatible
- Length and size: Straight heater, 15" long, 2" diameter
- Lead end terminal location: 5-7/8" from the end
- Mounting: Fixed heater mounting studs; no sensor studs; no threaded tap orientation
- Application: Gecko spa heater designed for reliable performance within IN.XE setups Who benefits from this heater
- Spa owners needing a reliable, ready-to-install replacement that matches Gecko IN.XE control systems without extensive rewiring.
- Technicians and service professionals looking for a flexible, field-convertible heater that reduces stocking complexity with a single part adaptable to 230V or 115V installations.
- Seasonal spa users who want a longer-lasting heating solution with built-in protection features to minimize downtime and maintenance. Practical use and installation notes
- Voltage configuration: Start with 230V/4.0 kW for maximum heating performance, or switch to 115V/1.0 kW when lower power consumption is preferred or when wiring constraints exist. The conversion is performed via a simple cable connection port adjustment on production lines, dealer showrooms, or in the field.
- Safety and longevity: The absence of a pressure switch simplifies the hydraulic chain, while in.flo dry-fire protection helps prevent element damage if the spa pump runs dry or water flow is interrupted.
- Compatibility in mind: Engineered as a direct replacement for T9920-101535, ensuring seamless integration with existing spa controls and plumbing without modifying the surrounding components. If you’re upgrading a Gecko IN.XE spa or replacing a worn heater, the Gecko heat.wav 4.0kW Spa Heater delivers dependable warmth, adaptable electrical configuration, and durable protection features that help you enjoy your spa with fewer interruptions.
| Housing Configuration |
Straight |
| Heater Length |
15" |
| Lead End Terminal Location |
5-7/8" |
| Threaded Tap Orientation |
None |
| Kilowatts |
1.0kW, 4.0kW |
| voltage |
115v, 230v |
| Sensor Stud Orientation |
None |
| Mounting Stud Type |
Fixed |
| Heater Size |
2" |
| Heater Application |
Gecko |