--- product_id: 92537121 title: "57882 F3 System Cleaner 1 Pint" brand: "fernox" price: "€ 85.74" currency: EUR in_stock: true reviews_count: 6 category: "Fernox" url: https://www.desertcart.pt/products/92537121-57882-f3-system-cleaner-1-pint store_origin: PT region: Portugal --- # Citrus scented freshness PH neutral formula Removes sludge & debris 57882 F3 System Cleaner 1 Pint **Brand:** fernox **Price:** € 85.74 **Availability:** ✅ In Stock ## Summary > ⚡ Restore your heating system’s prime—because rusty pipes are so last season! ## Quick Answers - **What is this?** 57882 F3 System Cleaner 1 Pint by fernox - **How much does it cost?** € 85.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/92537121-57882-f3-system-cleaner-1-pint) ## 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 - • **PH Neutral Power:** Gentle on metals yet tough on corrosion—protect your system’s longevity. - • **Deep System Detox:** Effortlessly clears rust, sludge, and flux for peak heating performance. - • **Citrus Fresh Formula:** Leaves a refreshing scent, making maintenance less of a chore. - • **Compact & Ready-to-Use:** 1 pint liquid solution fits perfectly in your toolkit for quick system rescue. - • **Trusted Industry Leader:** From Fernox, a top brand in water treatment and heating care. ## Overview Fernox 57882 F3 System Cleaner is a professional-grade, PH neutral liquid solution designed to remove sludge, rust, and flux from central heating systems. Packaged in a convenient 1-pint bottle with a refreshing citrus scent, it revitalizes both new and existing systems, ensuring optimal performance and longevity. Trusted by homeowners and professionals alike, this cleaner is a must-have for maintaining corrosion-free, efficient heating. ## Description Fernox is a leading manufacturer of water treatment chemical products, central heating system filters, plumbing consumables and diagnostic testing services. Review: Worked to restore a rusty system after unknowledgeable repair - When I first bought my home the pipes knocked like crazy. I was worried that it would damage something (pipes or solder maybe the framing of the house etc) so I did my thorough research and boldly bled the boiler. I didn't realize there's anti corrosion chemicals mixed into the liquid in the pipes. About 2 years later, my whole boiler was starting to rust. From what I could see at least. It seemed drastic and sudden, every pipe going to and from the boiler was suddenly rusted. I did more research and found out, I needed to clean the system with this, then drain it and refill it with the f1. (Why is it backwards that's so confusing. Is it because you fill f1 first and then f3 is if you're a homeowner who bled the boiler). I learned more about the boiler than any other appliance in the house. I understand the boiler after all this. I turned it off and let it cool until the big cast iron pipe at the bottom of the boiler was touchable. Supposedly that's the temperature the boiler would be? I don't know, I turned turned off all the zones but the first one. Luckily I found the manual for my boiler and was able to follow their filling instructions. That made it much easier since they mentioned my boiler automatically limits filling to 12 psi. I bought a small hand pump, I attached hoses to it with hose clamps and screwed it onto the first zone. Before bleeding I opened the zones outlet with the siphon going into the bottle, I just quickly forced it in, closed it and moved on to the next zone. After all the zones were done. I went back to the first to just open it for half a second to break any bubble or seal . It seems to really clean the system. After draining and filling the f1 it made the pipes look pretty much like the day we moved in. I'm surprised how much it affected the rust damage. Very cool stuff! Review: ez does it on the poor - this product is as advertised-had some rust build up in my plumbing-my new gf says not no moe ## Features - Removes sludge, flux and debris from new and existing systems - Package Weight: 0.625 kilograms - Country of Origin : China - Package Dimensions: 18.2 H x 4.6 L x 8.8 W (centimetres) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07L4QXF84 | | Best Sellers Rank | #267,069 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #846 in Cleaners #7,071 in HVAC | | Brand | Fernox | | Brand Name | Fernox | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.5 out of 5 stars 14 Reviews | | Global Trade Identification Number | 05014551578821 | | Included Components | Fernox 57882 Fernox F3 System Cleaner 1 Pint | | Item Form | Liquid | | Item Type Name | Fernox 57882 Fernox F3 System Cleaner 1 Pint | | Item Volume | 1 Pints | | Manufacturer | MONDALE & ASSOCIATES | | Material Feature | Scented | | Material Features | Scented | | Number of Items | 1 | | Scent | Citrus | | Special Features | PH Neutral | | Surface Recommendation | Metal | | Unit Count | 155.5 Fluid Ounces | ## Product Details - **Brand:** Fernox - **Item Form:** Liquid - **Item Volume:** 1 Pints - **Material Feature:** Scented - **Scent:** Citrus ## Images ![57882 F3 System Cleaner 1 Pint - Image 1](https://m.media-amazon.com/images/I/51J5RL51DDL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked to restore a rusty system after unknowledgeable repair *by A***H on February 10, 2026* When I first bought my home the pipes knocked like crazy. I was worried that it would damage something (pipes or solder maybe the framing of the house etc) so I did my thorough research and boldly bled the boiler. I didn't realize there's anti corrosion chemicals mixed into the liquid in the pipes. About 2 years later, my whole boiler was starting to rust. From what I could see at least. It seemed drastic and sudden, every pipe going to and from the boiler was suddenly rusted. I did more research and found out, I needed to clean the system with this, then drain it and refill it with the f1. (Why is it backwards that's so confusing. Is it because you fill f1 first and then f3 is if you're a homeowner who bled the boiler). I learned more about the boiler than any other appliance in the house. I understand the boiler after all this. I turned it off and let it cool until the big cast iron pipe at the bottom of the boiler was touchable. Supposedly that's the temperature the boiler would be? I don't know, I turned turned off all the zones but the first one. Luckily I found the manual for my boiler and was able to follow their filling instructions. That made it much easier since they mentioned my boiler automatically limits filling to 12 psi. I bought a small hand pump, I attached hoses to it with hose clamps and screwed it onto the first zone. Before bleeding I opened the zones outlet with the siphon going into the bottle, I just quickly forced it in, closed it and moved on to the next zone. After all the zones were done. I went back to the first to just open it for half a second to break any bubble or seal . It seems to really clean the system. After draining and filling the f1 it made the pipes look pretty much like the day we moved in. I'm surprised how much it affected the rust damage. Very cool stuff! ### ⭐⭐⭐⭐⭐ ez does it on the poor *by E***G on March 17, 2026* this product is as advertised-had some rust build up in my plumbing-my new gf says not no moe ### ⭐⭐⭐⭐⭐ Works *by A***R on December 12, 2024* I suppose it works. I drained the boiler until as clear as possible then I poured this in and left it for a week with the boiler heat on. After which I drained again until clear. Filled the boiler to spec and added the F3… works… water in the level shows the gunk settles leaving the to crystal clear ## Frequently Bought Together - Fernox 57882 F3 System Cleaner 1 Pint - Fernox 56599 F1 500 ml Central Heating Protector - Fernox 62436 Central Heating Protector F1 Express - 400ML --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/92537121-57882-f3-system-cleaner-1-pint](https://www.desertcart.pt/products/92537121-57882-f3-system-cleaner-1-pint) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*