CosWarm CW2 Central Heating System & Boiler Silencer – Treats Up to 18 Radiators - Radiator Noise Reducer – Reduces Boiler Noise - Underfloor heating

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.

Poured this into my heating system, it went quiet for about 30mins and then returned to its normal annoying noise

Excellent!! It works very well

Works a treat!

Does exactly what it says. Our boiler was really noisy and I had my doubts this would do anything but have to say I’m amazed at the difference.

Wasn’t too sure in the beginning if it would work but after using it I would definitely buy it again

Brilliant product sorted my issue

It seems ok but it didn’t work for my system

Bluish liquid. After 3 weeks in the system: no difference, did not eliminate or reduce kettling sounds. I will skip this brand for the next step.

Rempli son rôle comme indiqué sur la notice. Le produit est resté cinq jours dans le réseau du chauffage central, les radiateurs ont été désemboués, ils chauffent très bien maintenant.

Ho atteso qualche giorno ma .... nessun risultato!.. costo?..una follia x mezzo litro di nemmeno si che ..con tante aspettative e altrettante delusioni! Nessun cambiamento.. gorgoglia come prima!...ho dovuto richiedere intervento tecnico... nuovamente! Soldi buttati!

Algo si hace

Avec les bonnes indications, la différence se fait sentir au bout d un mois de traitement et un désembouage. Merci pour ces économies futures