Fernox F2 Central Heating Boiler Noise Silencer 500ml Product Code: 44452

Helps reduce boiler noise and improves heat transfer efficiency. Non-toxic.


  • Suitable for All Boiler Types
  • Prevents Bacterial Contamination
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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : Fernox
  • Sealant Adhesive Volume : 500 ml
  • Product Type : Central Heating Boiler Noise Silencer
  • Volume : 500 ml
  • Model No : F2
  • Pack Size : 1
  • Suitable System : Suitable for All Boiler Types
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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€22.95 Incl. 20% VAT

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Fernox F2 Central Heating Boiler Noise Silencer 500ml is rated 4.9 out of 5 by 9.
Rated 5 out of 5 by from Boiler silencer Boiler had been noisy for some time due to "kettling". Put this into the system via the bathroom towel rail. Within 10 min of switching the heating back on the noise was gone. I could not believe it was so effective.
Date published: 2018-08-31
Rated 5 out of 5 by from Solved a problem Have used before and found this product to be very effective, solved the boiler noise and extended its useful life
Date published: 2018-03-26
Rated 5 out of 5 by from Great product This cured a whistle from my boiler within minutes of putting it into the system. Just the job.
Date published: 2018-02-28
Rated 5 out of 5 by from Just the job I have an old boiler that was making loads of noise and the banging seemed to be effecting the pump too. The F2 stopped the noise pretty much instantly and the pump has quietened down as well. My only complaint is that it is more expensive than some of the other products but you do get what you pay for.
Date published: 2017-09-06
Rated 5 out of 5 by from Does What it Says it Does I have an aging Baxi combi which became noisy, sounded like a jet engine in the middle of the night. After injecting this into the system there was an almost immediate reduction in noise, but now some six weeks on the boiler is just purring like a big cat. I cannot be sure about reliability as six weeks is not long enough, buy if it lasts a year it will be worth it. Would definitely use it again.
Date published: 2017-03-27
Rated 5 out of 5 by from Noisey boiler silenced It does exactly what is claimed on the label. Once added to the boiler water circuit all that dreadful noise is gone.
Date published: 2016-11-02
Rated 5 out of 5 by from Perfect Having had a noisy boiler for years, the engineer suggested I try using this product. I read other reviews saying that it either worked quickly or might take 2 months so my expectations were low. Having used the No Nonsense filling kit to inject it into the top of a chrome towel rail/radiator I was amazed and pleased to notice a huge improvement almost immediately. I'm just annoyed I didn't find out sooner! A great product that worked for me.
Date published: 2016-10-13
Rated 4 out of 5 by from Very Good This is second time I have purchased this product. I added it to my heating system just over a year ago and have had no noise from my boiler since, after years of knocking. Great product.
Date published: 2014-06-07
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