---
product_id: 274261400
title: "Fernox 56599 F1 500ml Protector"
brand: "fernox"
price: "฿9802"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/274261400-fernox-56599-f1-500ml-protector
store_origin: TH
region: Thailand
---

# prevents limescale & system blockages compatible with all metals & materials 500ml long-term corrosion shield Fernox 56599 F1 500ml Protector

**Brand:** fernox
**Price:** ฿9802
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your heating flawless—because your home deserves the best!

## Quick Answers

- **What is this?** Fernox 56599 F1 500ml Protector by fernox
- **How much does it cost?** ฿9802 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/274261400-fernox-56599-f1-500ml-protector)

## 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

- • **Limescale Barrier:** Stops damaging limescale buildup to keep your heating system running efficiently.
- • **Compact & Easy to Use:** 500ml bottle designed for hassle-free application and long-lasting protection.
- • **Universal Compatibility:** Seamlessly works with all boiler types, radiators, and pipework materials.
- • **Ultimate Corrosion Defense:** Protects ferrous metals, copper, and aluminum from internal corrosion for years.
- • **Acid-Free & Mould Resistant:** Safe for indoor use with a clean almond scent, ensuring a fresh environment.

## Overview

Fernox 56599 F1 Protector is a 500ml, acid-free additive designed to provide long-term protection against corrosion and limescale in domestic central heating systems. Compatible with all metals and materials commonly used in boilers, radiators, and pipework, it ensures efficient system performance and longevity while maintaining a fresh almond scent.

## Description

Product Description Fernox Protector F1 gives long-term protection of domestic central heating systems against internal corrosion and limescale formation. It prevents corrosion of all metals found in these systems, i.e. ferrous metals, copper and copper alloys and aluminium. It is suitable for all types of boiler, radiators and pipe work systems. Fernox F1 Protector is compatible with all metals and materials commonly used in central heating systems. Note: Date mentioned on the item is production date not expiry date Set Contains: 1 x F1 500ml Protector

## Features

- Item Category: Tools
- Item Trademark: Fernox
- manufacturer: Fernox

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003HQ97E4 |
| Batteries required | No |
| Best Sellers Rank | #178,252 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #168 in Central Heating Systems & Accessories |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | 13 August 2012 |
| Included components | 1 x Fernox 56599 F1 500 ml Protector |
| Is mould resistant | Acid Free |
| Item Weight | 1.1 Pounds |
| Item model number | 56599 |
| Item volume | 500 Milliliters |
| Number of pieces | 1 |
| Product Dimensions | 18.49 x 8.99 x 5.51 cm; 498.95 g |
| Scent | Almond |
| Specific uses | Indoor use only |

## Product Details

- **Brand:** Fernox
- **Item form:** Liquid
- **Material features:** Natural
- **Scent:** Almond
- **Specific uses for product:** Indoor use only

## Images

![Fernox 56599 F1 500ml Protector - Image 1](https://m.media-amazon.com/images/I/71vgSqRV2bL.jpg)
![Fernox 56599 F1 500ml Protector - Image 2](https://m.media-amazon.com/images/I/61HGl4Zz15L.jpg)

## Available Options

This product comes in different **Item Package Quantity, Style** options.

## Questions & Answers

**Q: How do i add this f1 to steam boiler? can i add it through an air vent hold on a radiator? thanks**
A: My boiler isn’t steam, it’s hot water. But the directions that I was given was to remove/drain all of the current water in the system completely after the boiler has cooled off. Then add the cleaner. Now what I did was to add a shark bite  “T”and poured it into the system as I didn’t have another other place to put it in.  Then I removed the “T” and replaced it with a coupler.  But on a steam system I would think that you could add it to your radiator top vent and put it in then refill the system.   After it’s refilled your going to run it if a few days. I’m doing mine a little longer, like 10 days. So during that time the chemical is going to move around and clean the system.  Just make sure you turn off the boiler before you start doing any work on it.  I hope that this helps

**Q: How many gallons will this treat?**
A: My bottle says that it will treat up to 34 US gallons.

## Frequently Bought Together

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

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---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-09*