"I was a bit confused about the package size when I bought it because I thought I had bought the big bottle since it was more expensive, but I had actually bought the smaller tube. Anyway I installed it without too much grief, simply drained the system down a bit and injected it into a vent in an upstairs radiator. No problems there, but I am not sure that it has done much good, I wanted to try and reduce the sound of radiators wooshing when the heating first came on, but this product doesn't seem to have helped much, but to be fair it does seem to be more designed for cutting boiler noise, which wasn't my problem. I maybe need to give the system another really good clean out and put in more inhibitor, although it was done in May. I feel bad about saying that I don't recommend it, but the rating system demands a yes or no."
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Review 3 for No Nonsense Central Heating Noise Reducer 310ml Concentrate
"Wanted some boiler noise reducer. Always used Furnox product in the past and always worked. They did not stock Furnox and only had 'their own brand' No Nonsense on the shelf. Reluctantly purchased and used the product. What a waste of time and money, no difference in noise what so ever. Company did agreed for me to pay the difference and they ordered me in the Furnox."