CW3 Central Heating System Cleaner | Treats Up To18 Radiators | Boiler, Radiator & Pipe System Cleaning & Descaling Solution | Cleans & Removes Rust, Debris, Scale, Sludge | Underfloor

This product is amazing, we had no hot water in shower, although CH was fine, thought it was due to sticking switching valve. Put this CW3 in the system via towel rail and eezyfill dosing tool, took about 10 mins. Next morning shower hot and heating system quieter. Drained system after 4 days and then added CW1 and CW2. The boiler heating system and hot water are now perfect and so quite. Would highly recommend these products, saved me £300 in call out and replacement valve costs.

Make sure you use this regularly, on a new system. Id say once a year, like having the chimney sweep in & top up with the same brand inhibitor. We fitted a screw type magnetic filter & have had no problems since.

It was delivered quickly after the order. Packaging was adequate not excessive and the product seems cost effective.

Absolutely fantastic product. Read a lot of reviews before buying this item. 100% worth it. Put it in my mums radiators and what a difference, the radiator is piping hot! Then I bought it again for my own and worked a treat. Highly recommend this product to anyone!

This is added to the tank and left for a period of time. Certainly worked on my CH system and exposed an unanticipated weak spot.

Excellent!! It was very effective.

Excellent product. Great value for money.

Works a treat!

Di facile uso fa il suo lavoro

J'ai une chaudière vieille de 15 ans et les radiateurs avaient des zones froides au fond, la chaudière était bruyante. Après avoir lu de bonnes choses en ligne, j'ai décidé d'essayer le Coswarm CW3 plutôt que de payer pour un powerflush complet. Je l'ai ajouté via la boucle de remplissage, j'ai fait tourner le chauffage pendant quelques jours, puis j'ai vidé et rincé plusieurs fois jusqu'à ce que l'eau soit assez claire. J'ai ensuite ajouté l'inhibiteur CW1 de Coswarm. La différence est très perceptible. Les radiateurs chauffent désormais uniformément de haut en bas et ma chaudière est plus silencieuse, j'ai l'impression que tout le système fonctionne plus efficacement. Facile à utiliser et un bon rapport qualité-prix. Je recommande vivement.

Bought this to clear up sludge that seems to have accumelated, and compared to just draining the radiators, an immense amount of sludge got cleared out ( take precautions with adapters and hose, wouldnt want this black stuff all over walls, room or furniture !). While I wish that perhaps Coswarm cleaners would come in a bigger/smaller bottle and perhaps have some indicator if half/25% full for easier knowing doses and price ratio to make it more competitive, overall Ill say that the product succeeds, and I hope to keep recommending to friends and others.

totalmente inutil, lo tuve en el sistema de calefacción que tenías más de 20 años sin mantenimiento durante una semana circulando agua fría y al vaciar el sistema no salió nada de suciedad ni óxido. la sensación de haber tirado a la basura 40€ que me cobraron por esto.

qualité et prix