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Fernox F1 Central Heating Protector 500ml (77218)

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Fernox F1 Central Heating Protector 500ml (77218)

Provides long term protection of domestic central heating systems against internal corrosion and limescale formation. Prevents corrosion of all metals. Suitable for use with all types of boilers, radiators and pipework systems.

  • 1 Year Guarantee
  • Stops Frequent Venting of Radiators
  • Will Treat 16 Radiators
  • Ideal for New & Existing Systems

More Info

View all: Fernox Inhibitors & Protectors

£14.79INC VAT (£29.58/Ltr)
Was £18.49 Save £3.70 (20%)

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Fernox F1 Central Heating Protector 500ml is rated 4.9 out of 5 by 81.
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Rated 5 out of 5 by from Fernox - No. 1 F1 F1 is right about this, speedy to work and easy to use. Great prices from Screwfix, always my first stop to buy anything for the trade.
Date published: 2020-11-18
Rated 5 out of 5 by from Excellent inhibitor - fernoxed As always Fernox does the job and screwfix price of this right now is the best value ever at nearly half what I was paying all last year. My customer said his boiler is purring like a rolls Royce since this treatment.
Date published: 2020-11-12
Rated 4 out of 5 by from Good product The product is very easy to use. Screwfix is very convenient to buy from. I read other reviews and this product seems to be well liked.
Date published: 2020-11-11
Rated 5 out of 5 by from Used before Used this product before never had any problems. Does what it says on the container.
Date published: 2020-11-09
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Can I use the Fernox F1 500ML bottle to top-up a system already treated with "Fernox F1 Super Concentrate Gel 290ml" i.e. is it the same product but in a different format? Will the 500ML F1 also treat 100 litres?

Does the bottle have a shelf life before it's added to the system or does it keep indefinitely?
Asked by: TimSF
Hi TimSF, Yes you can mix different formats of Fernox F1 they are fully compatible, the shelf life of F1 is 5 years from the date of manufacture which is printed on the bottle. Do not store opened bottles as this will age as fast as the product in your system, so you will not be topping up with "fresh" product. A 500ml bottle now treats up to 130 litres but it is not detrimental to overdose.
Answered by: Fernox Client Services
Date published: 2020-11-25

F1 or MB1

Out of the 2 products Fernox F1 or MB1 which one would Fernox recommended for an old direct thermal store. And is there any difference between them? Cylinder is 160ltrs
Asked by: Alexplumber14
Hi Alexplumber 14, Go with the Fernox F1 it does the same job as the MB-1 (which is now not being manufactured anymore).
Answered by: Fernox Client Services
Date published: 2020-11-09

The description says stops Frequent Venting of Radiators. Is there something in the product or do all inhibitors do this

Asked by: Anonymous
Hi Alip, This would apply to any system that is treated correctly with a good quality inhibitor
Answered by: Fernox Client Services
Date published: 2020-11-09

Will Fernox F1 reduce noise/banging in the radiators and pipes?

Asked by: Anonymous
Hi Paul, It will stop it getting worse! But it will not remove what is causing the noise just prevent any further build up. Have you bled all your radiators? Is the water in your system clear or if you run some off into a glass and stand the glass on a white piece of paper can you see debris settling out? If you can see debris or you are having to bleed your radiators a lot I would recommend cleaning your system with Fernox F3 and then protecting with F1.
Answered by: Fernox Client Services
Date published: 2020-10-27

How long does Fernox F1 maintain its protection qualaties in a central heating system on the proviso that the correct strength has been maintained and not been diluted down with raw water

Asked by: Silvertree
Hi Silvertree, We would expect the working life to be at least 10 years but it is a good idea to check it annually by carrying out a nail test- details below: What do you do? 1. Fill a small clean jar with water drawn from a radiator vent or drain off point. 2. Add a few steel nails (not galvanised) 3. Close the lid of the jar and leave for approximately three days. 4. It is a good idea to do a sample of your mains water at the same time for comparison Results of the test: If the nails rust (in the radiator water jar), you can be sure that all the metal within the heating system is corroding. If the nails stay clean and bright then the system already contains an adequate dose of Central Heating Protector. If the nails discolour then just top up with fresh F1 there is no need to drain the system down. Use a dose rate of 1 application of F1 for every 130 litres of water (approx 16 slimline single radiators, count any doubles as 2 and round up).
Answered by: Fernox Client Services
Date published: 2020-08-06
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Specification
Brand Fernox
Label Info 3: Precautionary Statements P103 Read label before use.P102 Keep out of reach of children.P101 If medical advice is needed, have product container or label at hand.
Label Info 3: Precautionary Statements P103 Read label before use.P102 Keep out of reach of children.P101 If medical advice is needed, have product container or label at hand.
Label Info 5: Hazardous Chemical Content Contains 1,2-benzisothiazol-3(2H)-one. May produce an allergic reaction.
Manufacturer Guarantee 1 Year Guarantee
Model No F1
Pack Size 1
Pieces in Pack/Case 1
Product Type Central Heating Protector
Volume 500 ml

Downloads

Safety Data Sheet (COSHH)