---
product_id: 478175245
title: "Gecko Heat.Wav 4.0/5.5kW 115/230V Flow Thru Heater 0613-421009 (in.yj 3 Control System 0612-221041-431)"
brand: "gecko"
price: "2488 Lei"
currency: RON
in_stock: true
reviews_count: 4
url: https://www.desertcart.ro/products/478175245-gecko-heat-wav-4-0-5-5kw-115-230v-flow
store_origin: RO
region: Romania
---

# 4 kW power output 18+ GPM flow rate Compact 19.58" x 4.94" x 3.92" Gecko Heat.Wav 4.0/5.5kW 115/230V Flow Thru Heater 0613-421009 (in.yj 3 Control System 0612-221041-431)

**Brand:** gecko
**Price:** 2488 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your spa game with precision heat and sleek design!

## Quick Answers

- **What is this?** Gecko Heat.Wav 4.0/5.5kW 115/230V Flow Thru Heater 0613-421009 (in.yj 3 Control System 0612-221041-431) by gecko
- **How much does it cost?** 2488 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/478175245-gecko-heat-wav-4-0-5-5kw-115-230v-flow)

## Best For

- gecko enthusiasts

## Why This Product

- Trusted gecko brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Savvy Design:** Slim, lightweight profile (just 4.65 lbs) fits effortlessly in tight setups
- • **Seamless Integration:** Designed exclusively for in.yj 0612-221041-431 control systems
- • **Precision Flow Control:** Built-in flow sensor ensures optimal 18+ GPM for consistent heat
- • **Power-Packed Performance:** Delivers a robust 4 kW heating at 240V for rapid spa warmth
- • **Smart Temperature Sensing:** Integrated temperature sensor guarantees perfect spa temps every time

## Overview

The Gecko Heat.Wav 4.0/5.5kW Flow Thru Heater is a compact, high-efficiency spa heater engineered for in.yj control systems. Operating at 120V or 240V, it delivers up to 4 kW of power with a minimum flow rate of 18 GPM, featuring built-in flow and temperature sensors for reliable, precise heating in any spa or hot tub setup.

## Description

Specifically made for in.yj 0612-221041-431 control systems for spas and hot tubs (sold separately), this Gecko heater comes with built-in flow sensor and temperature sensor as well as its connecting cord.

## Features

- 0613-421009 | 0613-421001 | 2-00-7026 | GK0613421009 | 0613421009
- Voltage : 120 V or 240 V
- Wattage : 4 kW at 240 V, 1 kW at 120 V
- Flow rate : Minimum of 18 GPM (68,1 LPM) is required
- Dimensions: (W x H x D): 19.58” x 4.94" x 3.92" (497 x 125 x 100 mm), Weight: 4.65 lb ( 2.1 kg)

## Images

![Gecko Heat.Wav 4.0/5.5kW 115/230V Flow Thru Heater 0613-421009 (in.yj 3 Control System 0612-221041-431) - Image 1](https://m.media-amazon.com/images/I/511Sc77H1oL.jpg)
![Gecko Heat.Wav 4.0/5.5kW 115/230V Flow Thru Heater 0613-421009 (in.yj 3 Control System 0612-221041-431) - Image 2](https://m.media-amazon.com/images/I/31YO7P-p9gL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome Product !!!!
*by S***D on April 11, 2025*

Great quality and worked 100%!

### ⭐⭐⭐⭐⭐ Original replacement part
*by D***R on November 23, 2024*

Awesome

### ⭐⭐⭐⭐ Good fit
*by S***A on June 4, 2025*

Worked well for my aquaterra plug n play spa.

---

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**Shop now:** [https://www.desertcart.ro/products/478175245-gecko-heat-wav-4-0-5-5kw-115-230v-flow](https://www.desertcart.ro/products/478175245-gecko-heat-wav-4-0-5-5kw-115-230v-flow)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-23*