0500 41 41 41
Cookie Reports - Screwfix Cookie Policy


Fernox Central Heating Protector F1 500ml

Product Code: 77218

Provides long term protection of domestic central heating systems against internal corrosion, limescale formation and bacterial contamination. Prevents corrosion of all metals. Use on all types of boilers, radiators and pipework systems. Non-toxic.

  • Stops Frequent Venting of Radiators
  • Prevents Bacterial Contamination
  • 10 Year Manufacturer's Guarantee
  • View more information


Download more information...

Safety Data Sheet (COSHH)


4.8235 5 17

Add to saved list

Available for deliveryNext Day Delivery
Available for collection from store Store Collection Check stock in your store
Page 1 of 4
Page 1 of 4
Fernox Central Heating Protector F1 500ml 4.8 5 17 17
25 years and still working Have used this for 25 years now. Still get very little sludge from radiators. 8 Jun 2015
Reliable product I had to drain the heating system and so needed to add an inhibitor when refilling. Fernox F1 has a good reputation and I've used it before, although not usually the cheapest option. Great to be able to get it at Screwfix on a Saturday afternoon, when all the plumbers merchants had closed for business. 5 Jan 2015
Fernox Products We often go back to a system after years of 'benign neglect' to find everything working well and still a high inhibitor value reading. Well worth the slightly extra costs - excellent value right across the range of products. 14 Dec 2014
Good stuff Have previously used the MB-1. Tried this and it seems ok, less space taken up in van due to being concentrated 10 Dec 2014
  • 2015-06-29T14:30:02.213-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_17, tr_17
  • loc_en_US, sid_77218, prod, sort_default
Page : 2 next>


Download more info (pdf)

Brand Fernox
Manufacturer Guarantee 10 years
Manufacturing Standards KIWA
Model No F1
Pack Size 1
Product Type Central Heating Protector
Sealant Adhesive Volume 500 ml
Total Product Weight 646 kg
Volume 500 ml