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
Download more information
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 service up to 3 working days: €8.95

Free delivery on all orders over €70.00

Click here to see information on our delivery service



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€23.45 Incl. 23% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Fernox F2 Central Heating Boiler Noise Silencer 500ml is rated 4.8 out of 5 by 6.
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
Rated 5 out of 5 by from Worked for me!! Used Sentinel x800 to clean the system first. The knocking and clanging got much worse than before, so drained the system and flushed it twice. Added the F2 and turned the heating on for a couple hours that night. Didn't get woken up in the morning from the boiler, actually can't hear it at all !! woohoo.....
Date published: 2012-01-07
  • y_2018, m_1, d_18, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_IE, sid_44452, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie