Fernox F3 Central Heating Cleaner 500ml

By Fernox Product code: 80785 Pack size: Each

£11.98 was £16.98 Exc. VAT £9.98
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Product Details

Removes sludge, scale and debris from new and existing central heating systems to improve boiler efficiency. Suitable for use with powerflushing machines.


An effective, universal pH neutral, non-foaming liquid cleaner, which removes sludge, scale and debris from existing central heating systems to restore heating efficiency and eliminate boiler noise. When commissioning new systems in accordance with BS 7593:2019 regulations and best practice, Cleaner F3 is ideal to remove flux residues and other installation debris to help extend the life of the boiler and the efficiency of the system. It is suitable for use when powerflushing to accelerate the cleaning process in existing and contaminated systems. A non-hazardous product which is compatible with all metals commonly used in heating systems, including aluminium.

• Neutral universal cleaner for pre-commissioning new systems in accordance with BS7593:2006
• Removes sludge, limescale and other debris to restore heating efficiency of existing systems
• Compatible with all metals and materials commonly used in heating systems
• pH Neutral, non-hazardous, non-foaming formula, which is fast and easy to remove from the system
• One 500ml recyclable bottle treats up to 130 litres of system water (16 radiators) and the equivalent of 250m2 of underfloor systems.

Technical Specification
Brand Fernox
Safety Data Sheet click here
Volume (L) 0.5
Delivery details


Covid-19 Update

  • FREE Next Business Day delivery is available for orders over £25 for orders placed before 9pm Mon-Thur and before 6pm Sunday
  • Saturday and Sunday delivery is available for orders placed before 6pm on Friday for Saturday Delivery and 4pm Saturday for Sunday delivery. Items over 30kg can only be delivered next Business Day Mon-Fri. Orders placed after 9pm Thursday will be delivered the following Monday see here for details
  • Pre-12 delivery service is now available for weekday deliveries. Place your order before 9pm Mon-Thur for next business day delivery by 12pm. Orders placed after 9pm Thur and before 6pm Sunday will be delivered by 12pm Monday. UK mainland only
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • Delivery direct from suppliers is available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Mon-Fri (order by 9pm Mon-Thur & Sun by 6pm) delivered before 6pm £5 Free Free
Pre-12 Delivery Mon-Fri (order by 9pm Mon-Thur & Sun by 6pm) delivered before 12pm next day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery (order by 6pm Friday) delivered before 6pm £10 £5 Free
Sunday Delivery (order by 4pm Saturday) delivered before 6pm £10 £5 Free


Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details

Covid 19 Update

Click & Collect

We are fully open and delighted to welcome our customers into our branches.

Our opening times are 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday

Our speedy 5 min Click and Collect service remains one of the safest ways to buy from us and minimises your time in store. Place your order at toolstation.com 7 days a week, and travel to store once your collection confirmation is received by email or text message.





Don’t forget your mobile number – Please ensure that your mobile number is added so that we can text you when your order is ready to collect.

Your items will be held at your selected Toolstation branch for 14 days, after which point your order will be put back to stock and refunded automatically.

Reviews
Fernox F3 Central Heating Cleaner 500ml is rated 4.1 out of 5 by 14.
Rated 5 out of 5 by from Silent radiators Bought this a couple of years ago to clean out radiators (without power cleaner). Works a treat- they've since been silent and run smoothly. Used F3 again this year as a precaution.
Date published: 2021-05-04
Rated 3 out of 5 by from Service level Very good service and good attitude always helpful and professional
Date published: 2021-03-03
Rated 5 out of 5 by from Excellent product, easy to use. Have used this product before and would not hesitate to use again
Date published: 2020-06-06
Rated 2 out of 5 by from Not as good as suggested. Instructions suggest "One Hour" would be sufficient to clean the system, I left it in for four days. Brown water came out when I flushed the system but when I removed a motorised valve there was still thick, black sediment stuck to the inside of the 22mm pipework ...not impressed! Added Sentinel X400 for two weeks but similar result. Will stick to taking the radiator off the wall each time I decorate.
Date published: 2020-05-15
Rated 5 out of 5 by from Seems to be making the heating better Impressed with how it’s working within the heating system.
Date published: 2020-05-06
Rated 1 out of 5 by from didnt work too well. used something stronger. didnt work too well. used 2 bottles of it. Ended up using Sential X800 which was much stronger and removed alot more debris from the system after leaving it in for 4 days.
Date published: 2020-05-05
Rated 5 out of 5 by from Heating supplies I purchased this item 2 weeks ago. I have used it and it worked very well. Tthe delivery option work superbly.
Date published: 2020-04-26
Rated 5 out of 5 by from Miracle worker! My open vented central heating system had become very noisy over the previous six months, so I drained the system (the water had been treated with Fernox F1 Protector from the original commissioning and seemed fairly clean) and refilled it, adding the Fernox F3 cleaner. After running the pump for an hour I was staggered by the improvement - the system had become virtually silent. I left the cleaner in the central heating for one week before draining it again. This time the water was quite black - clearly there had been a lot of sludge and sediment lurking in the low points of the system. I would therefore wholeheartedly recommend the F3 cleaner, which worked brilliantly for me and was definitely worth every penny of the cost.
Date published: 2020-04-22
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