---
product_id: 23454135
title: "Coates Heater 23000105 0.5in Flow Switch for Q12DS"
brand: "coates heater"
price: "₪411"
currency: ILS
in_stock: true
reviews_count: 2
category: "Coates Heater"
url: https://www.desertcart.co.il/products/23454135-coates-heater-23000105-0-5in-flow-switch-for-q12ds
store_origin: IL
region: Israel
---

# 120V operating voltage Reliable flow switch for spa heaters Easy clamp mount installation Coates Heater 23000105 0.5in Flow Switch for Q12DS

**Brand:** coates heater
**Price:** ₪411
**Availability:** ✅ In Stock

## Summary

> 💡 Upgrade your flow, upgrade your spa experience!

## Quick Answers

- **What is this?** Coates Heater 23000105 0.5in Flow Switch for Q12DS by coates heater
- **How much does it cost?** ₪411 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/23454135-coates-heater-23000105-0-5in-flow-switch-for-q12ds)

## Best For

- coates heater enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable IP54-rated protection against dust & water
- • **Compact Powerhouse:** Small 1x1x1 inch size fits seamlessly
- • **Trusted Performance:** Copper contacts ensure consistent conductivity
- • **Plug & Play Precision:** Spade connectors for hassle-free replacement
- • **Spa-Ready Reliability:** Optimized for swimming pool & spa heater systems

## Overview

The Coates Heater 23000105 0.5in Flow Switch by Harwil is a compact, IP54-rated device designed for reliable flow detection in spa and pool heaters. Featuring 120V operation, copper contacts, and easy clamp mount installation with spade connectors, it ensures quick replacement and consistent performance to keep your heating system running smoothly.

## Description

Coates Heater Company, Harwil Flow Switch, 1/2"

Review: Check your connections - It’s an easy replacement. Many of the original sensors have the wires potted in epoxy. The replacement has spade connections on the unit make sure you have female spades to make the connection.
Review: Fast shipping - Perfect for my spa heater now it works again

## Features

- Coates Heater Company, Harwil Flow Switch, 1/2", 23000105.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00V4255Z8 |
| Actuator Type | Push Button |
| Best Sellers Rank | #93,540 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #85 in Swimming Pool Heater Parts |
| Brand Name | Coates Heater |
| Circuit Type | 1-way |
| Color | Grey |
| Connectivity Protocol | X-10 |
| Connector Type | Clamp |
| Contact Material | Copper |
| Contact Type | 10pdt |
| Control Method | Remote |
| Customer Reviews | 4.8 out of 5 stars 7 Reviews |
| International Protection Rating | IP54 |
| Item Dimensions | 1 x 1 x 1 inches |
| Item Height | 1 inches |
| Manufacturer | Harwil Corporation |
| Material Type | Plastic |
| Model | 23000105 |
| Mounting Type | Clamp Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 120 Volts |
| Operation Mode | OFF-NONE-ON |
| Specification Met | Ul, Culus, Ip54 |
| Switch Type | Flow Switch |
| Terminal | Physical |
| UPC | 710882488970 |
| Unit Count | 1 Count |
| Wattage | 144 watts |

## Product Details

- **Operation Mode:** OFF-NONE-ON
- **Operating Voltage:** 120 Volts
- **Contact Type:** 10pdt
- **Connector Type:** Clamp
- **Brand:** Coates Heater
- **Switch Type:** Flow Switch
- **Terminal:** Physical
- **Material:** Plastic
- **Item dimensions L x W x H:** 1 x 1 x 1 inches
- **Circuit Type:** 1-way

## Images

![Coates Heater 23000105 0.5in Flow Switch for Q12DS - Image 1](https://m.media-amazon.com/images/I/41t10t3XaXL.jpg)
![Coates Heater 23000105 0.5in Flow Switch for Q12DS - Image 2](https://m.media-amazon.com/images/I/51cBmBYqCZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Check your connections
*by K***L on August 8, 2025*

It’s an easy replacement. Many of the original sensors have the wires potted in epoxy. The replacement has spade connections on the unit make sure you have female spades to make the connection.

### ⭐⭐⭐⭐⭐ Fast shipping
*by J***. on June 16, 2023*

Perfect for my spa heater now it works again

## Frequently Bought Together

- Coates Heater 23000105 0.5in Flow Switch for Q12DS
- Coates High Limit Switch 22003820

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**Shop now:** [https://www.desertcart.co.il/products/23454135-coates-heater-23000105-0-5in-flow-switch-for-q12ds](https://www.desertcart.co.il/products/23454135-coates-heater-23000105-0-5in-flow-switch-for-q12ds)

---

*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-03-03*