---
product_id: 92537112
title: "Fernox 56599 F1 500 ml Central Heating Protector"
brand: "fernox"
price: "$176.34"
currency: USD
in_stock: true
category: "Fernox"
url: https://www.desertcart.ec/products/92537112-fernox-56599-f1-500-ml-central-heating-protector
store_origin: EC
region: Ecuador
---

# Reduces radiator venting Compatible with all metals Corrosion & scale defense Fernox 56599 F1 500 ml Central Heating Protector

**Brand:** fernox
**Price:** $176.34
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your heating flawless and your energy bills cooler!

## Quick Answers

- **What is this?** Fernox 56599 F1 500 ml Central Heating Protector by fernox
- **How much does it cost?** $176.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/92537112-fernox-56599-f1-500-ml-central-heating-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

- • **Easy Integration:** Compatible with all boiler types and pipework materials—plug & play protection.
- • **No More Cold Spots:** Eliminates radiator cold spots for consistent warmth throughout your home.
- • **Ultimate System Shield:** Protects all metals in your heating system from corrosion and limescale buildup.
- • **Boost Efficiency & Save:** When paired with F3 Cleaner, unlock up to 15% gas savings—cut costs, not comfort.
- • **Pump Performance Preserved:** Prevents sticking pumps, ensuring smooth, silent operation season after season.

## Overview

Fernox 56599 F1 500 ml Central Heating Protector is a premium liquid additive designed to safeguard domestic heating systems from corrosion and limescale. Suitable for all metals and boiler types, it enhances system efficiency, prevents radiator cold spots, and reduces the need for frequent venting. When used with Fernox F3 Cleaner, it can deliver up to 15% gas savings, making it an essential upgrade for any modern home heating setup.

## 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

- Protects Against Corrosion & Scale
- When Used with F3 Cleaner Can Achieve 15% Gas Savings
- Stops Frequent Venting of Radiators
- Prevents Sticking Pumps
- Prevents Radiator Cold Spots

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003HQ97E4 |
| Best Sellers Rank | #83,026 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #409 in Industrial Lubricants #4,879 in HVAC #9,277 in Pumps & Plumbing Equipment |
| Brand Name | Fernox |
| Customer Reviews | 4.6 4.6 out of 5 stars (28) |
| Global Trade Identification Number | 05014551565999, 05698292057540 |
| Included Components | 1 x Fernox 56599 F1 500 ml Protector |
| Item Form | Liquid |
| Item Type Name | F1 500ml Protector |
| Item Volume | 500 ml |
| Item Weight | 1.1 pounds |
| Manufacturer | Fernox |
| Material Features | Natural |
| Material Type Free | Acid Free |
| Model Number | 56599 |
| Number of Items | 1 |
| Part Number | 56599 |
| Scent | Almond |
| Size | 16.91 Fl Oz (Pack of 1) |
| Special Features | Removes limescale |
| Specific Uses For Product | Indoor use only |
| Surface Recommendation | Metal |
| Unit Count | 16.91 Fluid Ounces |

## Product Details

- **Brand:** Fernox
- **Item Form:** Liquid
- **Material Feature:** Natural
- **Scent:** Almond
- **Specific Uses For Product:** Indoor use only

## Images

![Fernox 56599 F1 500 ml Central Heating Protector - Image 1](https://m.media-amazon.com/images/I/71vgSqRV2bL.jpg)
![Fernox 56599 F1 500 ml Central Heating Protector - Image 2](https://m.media-amazon.com/images/I/41ujF2uJGtL.jpg)
![Fernox 56599 F1 500 ml Central Heating Protector - Image 3](https://m.media-amazon.com/images/I/41+CPEilRbL.jpg)

## 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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**Shop now:** [https://www.desertcart.ec/products/92537112-fernox-56599-f1-500-ml-central-heating-protector](https://www.desertcart.ec/products/92537112-fernox-56599-f1-500-ml-central-heating-protector)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-08-31*