---
product_id: 391451550
title: "CW1 Central Heating Inhibitor & Protector | Treats Up to 18 Radiators | Boiler Water Chemicals | Prevents Rust, Corrosion & Scale in Boilers, Hot Water Systems & Hydronic Heating Systems"
brand: "coswarm"
price: "587 zł"
currency: PLN
in_stock: true
reviews_count: 5
category: "Cos Warm"
url: https://www.desertcart.pl/products/391451550-cw1-central-heating-inhibitor-and-protector-treats-up-to-18
store_origin: PL
region: Poland
---

# Protects up to 18 radiators Super concentrated formula NSF certified safety CW1 Central Heating Inhibitor & Protector | Treats Up to 18 Radiators | Boiler Water Chemicals | Prevents Rust, Corrosion & Scale in Boilers, Hot Water Systems & Hydronic Heating Systems

**Brand:** coswarm
**Price:** 587 zł
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your boiler flawless, efficient, and worry-free—because your home deserves the best!

## Quick Answers

- **What is this?** CW1 Central Heating Inhibitor & Protector | Treats Up to 18 Radiators | Boiler Water Chemicals | Prevents Rust, Corrosion & Scale in Boilers, Hot Water Systems & Hydronic Heating Systems by coswarm
- **How much does it cost?** 587 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/391451550-cw1-central-heating-inhibitor-and-protector-treats-up-to-18)

## Best For

- coswarm enthusiasts

## Why This Product

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

## Key Features

- • **Broad Compatibility:** Works seamlessly with all metals & heating systems, new or old.
- • **Powerful Concentration:** One 500ml bottle treats up to 18 radiators—less product, more protection.
- • **Trusted Safety Standard:** NSF certification guarantees top-tier health & safety compliance.
- • **Ultimate Boiler Longevity:** Stops rust, scale & corrosion to extend your system’s life.
- • **Max Efficiency, Minimal Maintenance:** Reduces venting frequency and costly downtime.

## Overview

CosWarm CW1 is a highly concentrated, NSF-certified boiler inhibitor designed to protect central heating systems from rust, corrosion, and scale buildup. Treating up to 18 radiators per 500ml bottle, it’s compatible with all metals and heating setups, ensuring long-lasting boiler efficiency and reduced maintenance costs.

## Description

When it comes to boiler treatment and maintenance, preventing scale buildup is a top priority. Even a little bit of scale or corrosion buildup is going to cost you a lot of money. CosWarm CW1 steam boiler corrosion inhibitor controls the formation of rust, corrosion, scale and deposits, which is the primary reason for boiler failures and reduced system efficiency and in the long run, it compromises a boiler system’s reliability.CosWarm CW1 For All-round Boiler Maintenance: Extend The Life Of Boilers: Inhibits scaling, corrosion, rusting buildup in boilers and plumbing linesSave Money: Prevent expensive maintenance and costly downtimeFights: Lime, scale, mineral deposits, rust, oxygen corrosion and condensate corrosionProtect Boiler: Acts as a protection on your systems and stops frequent venting of radiators For All Metals: Prevents corrosion of all metals found in the system like aluminum, ferrous metals, copper, copper alloys, mild steel and stainless steel.Features:Highly concentrated formula: Treats up to 18 single radiatorsVersatile: Compatible with all boilers, radiators and pipework systems as well as existing and new heating systemspH neutral formulaWhy Choose A Product That Is NSF Certified?Millions of people take the safety of their food, water and consumer products for granted on a daily basis. Why? Because of three letters: NSF. When the product is NSF certified, it means that it meets meet strict standards for public health protection. From extensive product testing and material analyses to unannounced plant inspections, every aspect of a product’s development is thoroughly evaluated before it can earn this certification.What Are You Waiting For? Click On The “Add To Cart” Button Now!

Review: Este producto estaba agotado y me puse en contacto con el proveedor me dio respuesta rápida y me aviso cuando desertcart ya disponía de el. Contacte por email en ingles pero con frases simples y no hubo problema. El producto es muy aconsejable para que la caldera y la instalación se mantenga lo más limpia posible, además el ruido de la caldera a desaparecido. Resumiendo, no es barato el producto, pero si me ahorro de cambiar piezas de la caldera y un mejor rendimiento, sale a cuenta usarlo.
Review: work as advertised very good product

## Features

- EXTEND THE LIFE OF YOUR BOILERS with CosWarm CW1 Boiler Inhibitor. This revolutionary formula protects your system from scale formation, corrosion buildup and provides continuous protection. It stops frequent venting of radiators and ensures long-lasting and smooth working of boilers.
- SUITABLE FOR EXISTING & NEW HEATER SYSTEMS: CosWarm CW1 steam boiler inhibitor can be used for all types of boiler, radiators and pipework systems. Boiler lime and rust. It is compatible with all metals and materials (including aluminum) commonly used in central heating systems.
- SUPER CONCENTRATED FORMULA: Our highly concentrated formula treats much more and requires no secondary containment for it to work. 500 ml of CosWarm CW1 can treat up to 18 single radiators (150-liter system).
- NSF CERTIFIED FOR SAFETY: Millions of customers take it as a mark of quality assurance because every aspect of a product’s development is thoroughly evaluated by one of today’s most respected independent product testing organizations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B086DV7PD5 |
| ASIN  | B086DV7PD5 |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 4.6 4.6 out of 5 stars (319) |
| Customer reviews | 4.6 4.6 out of 5 stars (319) |
| Date First Available | 20 November 2020 |
| Date First Available  | 20 November 2020 |
| Item Weight | 500 g |
| Manufacturer | CosWarm |
| Manufacturer  | CosWarm |
| Manufacturer reference | CW1-AU |
| Manufacturer reference  | CW1-AU |
| Part number | CW1-AU |
| Product Dimensions | 18.3 x 8.7 x 5.8 cm; 500 g |
| Product Dimensions  | 18.3 x 8.7 x 5.8 cm; 500 g |

## Images

![CW1 Central Heating Inhibitor & Protector | Treats Up to 18 Radiators | Boiler Water Chemicals | Prevents Rust, Corrosion & Scale in Boilers, Hot Water Systems & Hydronic Heating Systems - Image 1](https://m.media-amazon.com/images/I/61XPeGavngL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 27 February 2021*

Este producto estaba agotado y me puse en contacto con el proveedor me dio respuesta rápida y me aviso cuando Amazon ya disponía de el. Contacte por email en ingles pero con frases simples y no hubo problema. El producto es muy aconsejable para que la caldera y la instalación se mantenga lo más limpia posible, además el ruido de la caldera a desaparecido. Resumiendo, no es barato el producto, pero si me ahorro de cambiar piezas de la caldera y un mejor rendimiento, sale a cuenta usarlo.

### ⭐⭐⭐⭐⭐ Review
*by E***Z on 5 December 2025*

work as advertised very good product

### ⭐⭐⭐⭐⭐ Review
*by A***K on 12 May 2025*

Does the job.

## Frequently Bought Together

- CosWarm CW1 Central Heating Inhibitor & Protector | Treats Up to 18 Radiators | Boiler Water Chemicals | Prevents Rust, Corrosion & Scale in Boilers, Hot Water Systems & Hydronic Heating Systems
- CosWarm CW3 Central Heating System Cleaner | Treats Up To18 Radiators | Boiler, Radiator & Pipe System Cleaning & Descaling Solution | Cleans & Removes Rust, Debris, Scale, Sludge | Underfloor
- CosWarm CW2 Central Heating System Silencer – Boiler & Radiator Noise Reducer Absorber & Dosing Liquid for Closed Loop System, Hydronic System – Reduces Boiler Noise - For 18 Single Radiators

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-05*