---
product_id: 248271297
title: "CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating"
brand: "coswarm"
price: "€ 36.62"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.nl/products/248271297-cw2-central-heating-system-and-boiler-silencer-treats-up-to
store_origin: NL
region: Netherlands
---

# Non-toxic & biodegradable formula Reduces boiler noise effectively Treats up to 18 radiators (150L system) CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating

**Brand:** coswarm
**Price:** € 36.62
**Availability:** ❌ Out of Stock

## Summary

> 🔕 Silence your boiler, amplify your comfort.

## Quick Answers

- **What is this?** CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating by coswarm
- **How much does it cost?** € 36.62 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/248271297-cw2-central-heating-system-and-boiler-silencer-treats-up-to)

## 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

- • **Eco-Friendly & Safe:** Non-acidic, non-toxic, and biodegradable formula protects your family and the planet.
- • **Easy Maintenance Boost:** Fast-acting leave-in treatment restores heating efficiency without draining or flushing.
- • **Silent Comfort Upgrade:** Eliminates annoying boiler kettling and clanking for a peaceful home environment.
- • **Broad System Compatibility:** Works seamlessly with most domestic boilers, radiators, pipes, and metals including aluminium.
- • **Long-Lasting Concentration:** One bottle treats up to 18 radiators, ensuring extended noise reduction and system care.

## Overview

CosWarm CW2 Central Heating System & Boiler Silencer is a powerful, eco-friendly liquid treatment designed to reduce boiler and radiator noise in systems up to 18 radiators (150 litres). Its fast-acting, non-toxic formula is compatible with most heating systems and metals, providing a safe, long-lasting solution that enhances heating efficiency while protecting the environment.

## Description

Free delivery and returns on eligible orders. Buy CosWarm CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating at desertcart UK.

Review: Great results - When our boiler started making unusual noises (kettling), the heating engineer recommended draining and flushing the system. With the unsettled weather did no want to do this now, so thought I would try this noise reducer and am not disapointed. 24 hours of putting CosWarm CW2 in the header tank we noticed a reduction in the noise and now a week later the boiler is back to its old self. Hopefully this will last.
Review: Yes. Reduced Noise - Have an old boiler which is very noisy. This stuff worked great.

## Features

- Contains benzisothiazolone. May produce an allergic reaction.
- Safety data sheet available on request.
- SHHHH…DOSE YOUR BOILERS with CosWarm CW2 Boiler Silencer. It isn’t very pleasant to be around noisy boilers, but our boiler liquid can effectively solve this problem and restore the heating efficiency of your boilers and radiators.
- GIVE YOUR BOILER SOME TLC: It is crucial that you don’t take a noisy boiler for granted and immediately remedy it with our boiler noise reducer. Our leave-in treatment is a gentle yet highly effective solution that eliminates boiler noise and keeps your boiler bubbling and healthy always.
- SUPER CONCENTRATED & FAST-ACTING FORMULA: Our boiler and central heating system noise silencer can treat up to 18 individual radiators, i.e., a 150-litre system. This ensures that this bottle will go a long way in curing the boilers.
- WIDE COMPATIBILITY: Our boiler noise silencer can be used with most domestic boilers, radiators, pipes and heating systems. It is also compatible to use around metals most commonly found in the heating systems, including aluminium.
- SAFE FOR YOU, THE BOILERS & THE ENVIRONMENT: Our non-toxic and non-acidic radiator silencer is a safer alternative and can be used worry-free around people, the environment and in your heating systems. As this central heating silencer liquid is biodegradable, it won’t harm Mother Nature either.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08LD42WHM |
| Best Sellers Rank | 270,177 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,517 in Central Heating System Accessories |
| Brand | CosWarm |
| Colour | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (81) |
| Date First Available | 19 Oct. 2020 |
| Item Weight | 550 g |
| Package Dimensions | 18.3 x 8.5 x 5.8 cm; 550 g |
| Special Features | Heating system noise reduction |

## Product Details

- **Brand:** CosWarm
- **Colour:** Black
- **Form factor:** Pedestal
- **Indoor/Outdoor usage:** Indoor
- **Special feature:** Heating system noise reduction

## Images

![CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating - Image 1](https://m.media-amazon.com/images/I/412vxquuc2L.jpg)
![CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating - Image 2](https://m.media-amazon.com/images/I/418psxAl4PL.jpg)
![CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating - Image 3](https://m.media-amazon.com/images/I/41La6twNrvL.jpg)
![CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating - Image 4](https://m.media-amazon.com/images/I/41fSihExDNL.jpg)
![CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating - Image 5](https://m.media-amazon.com/images/I/51+-fQFHKfL.jpg)

## Questions & Answers

**Q: Does this stop tapping in the pipes?**
A: Yes

**Q: Would this help with tapping noise from pipes**
A: Hello. not sure about tapping. I used it because the boiler was a bit loud. I worked for me.

**Q: Can it be left in the system or have to be drained thanks**
A: Hi it should be left in the system

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great results
*by A***J on 5 February 2021*

When our boiler started making unusual noises (kettling), the heating engineer recommended draining and flushing the system. With the unsettled weather did no want to do this now, so thought I would try this noise reducer and am not disapointed. 24 hours of putting CosWarm CW2 in the header tank we noticed a reduction in the noise and now a week later the boiler is back to its old self. Hopefully this will last.

### ⭐⭐⭐⭐ Yes. Reduced Noise
*by S***N on 23 December 2024*

Have an old boiler which is very noisy. This stuff worked great.

### ⭐⭐⭐⭐⭐ Works well
*by A***R on 12 May 2023*

Excellent!! It works very well

## Frequently Bought Together

- 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
- 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 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

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-15*