---
product_id: 222161969
title: "Fernox 62436 Central Heating Protector F1 Express - 400ML"
brand: "fernox"
price: "S$7"
currency: SGD
in_stock: false
url: https://www.desertcart.sg/products/222161969-fernox-62436-central-heating-protector-f1-express-400ml
store_origin: SG
region: Singapore
---

# Non-toxic & eco-friendly 30-second quick dosing Corrosion & limescale protection Fernox 62436 Central Heating Protector F1 Express - 400ML

**Brand:** fernox
**Price:** S$7
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Protect your heat, protect your home—fast, green, and foolproof!

## Quick Answers

- **What is this?** Fernox 62436 Central Heating Protector F1 Express - 400ML by fernox
- **How much does it cost?** S$7 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/222161969-fernox-62436-central-heating-protector-f1-express-400ml)

## Best For

- fernox enthusiasts

## Why This Product

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

## Key Features

- • **Extended Boiler Life:** Maintain peak system efficiency and avoid costly repairs with long-term corrosion defense.
- • **Rapid 30-Second Dose:** Get your heating system protected in under a minute—no downtime, no hassle.
- • **Eco-Conscious Formula:** Non-toxic and environmentally friendly, because your home and planet deserve the best.
- • **Effortless Application:** Add via radiator adapter or filling loop in less than two minutes—protection made simple.
- • **Universal Compatibility:** Safe for all metals including aluminum, ensuring seamless integration with your system.

## Overview

Fernox 62436 Central Heating Protector F1 Express is a 400ml inhibitor designed to prevent corrosion and limescale in domestic heating systems. Compatible with all metals including aluminum, it features a quick 30-second dosing process via radiator adapter or filling loop. Its non-toxic, environmentally friendly formula maintains system efficiency and extends boiler life, making it an essential maintenance product for any modern central heating setup.

## Description

Protector F1 is a market leading inhibitor which protects against corrosion and limescale formation in domestic central heating systems. Protector F1 is suitable for use with all metals and materials commonly used in heating systems. For long-term protection ensure concentration levels are maintained and checked annually as part of the boiler or system service. Protector F1 is compatible with all other Fernox products. One 400ml can protect an average sized system (130 litres or up to 16 single radiators) and is added via a radiator or filling loop. Fernox Protector F1 Express can be dispensed directly into a radiator air vent or system filling loop using the appropriate special adapter supplied with the product. The whole process takes less than two minutes. In a single feed indirect cylinder, e.g. ‘Primatic’ or similar, potable water chemicals must be used. We recommend untreated or sludged systems are thoroughly cleaned and flushed in accordance with BS7593 and Benchmark using Fernox Cleaner F5 Express, before treating with Fernox Protector F1 Express, as existing debris can damage the installation.

## Features

- Quick and convenient – doses in 30 seconds
- Add via a radiator adapter or filling loop supplied
- Protects against corrosion and limescale
- Non-toxic, environmentally friendly formulation suitable for use with all metals and materials, including aluminium
- Maintains system efficiency and extends boiler life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Fernox |
| Brand | Fernox |
| Model | 62436 |
| Item Weight | 15.8 ounces |
| Package Dimensions | 10 x 4.06 x 2.72 inches |
| Item model number | 62436 |
| Exterior | Aluminum |
| Manufacturer Part Number | 62436 |

## Product Details

- **Brand:** Fernox
- **Model Name:** 62436
- **Number of Items:** 1
- **Manufacturer:** Fernox

## Images

![Fernox 62436 Central Heating Protector F1 Express - 400ML - Image 1](https://m.media-amazon.com/images/I/51MGemjuNlL.jpg)

## Frequently Bought Together

- Fernox 62436 Central Heating Protector F1 Express - 400ML
- Fernox 57882 F3 System Cleaner 1 Pint
- Fernox 56599 F1 500 ml Central Heating Protector

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**Shop now:** [https://www.desertcart.sg/products/222161969-fernox-62436-central-heating-protector-f1-express-400ml](https://www.desertcart.sg/products/222161969-fernox-62436-central-heating-protector-f1-express-400ml)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-28*