Fernox F3 Central Heating Cleaner 500ml Product Code: 51463

Quick and effective neutral cleanser. Removes debris, sludge and scale, restoring efficiency. Non-toxic.


  • Can be Used with Powerflush Machines
  • Suitable for All Heating System Metals
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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : Fernox
  • Product Type : Central Heating Cleaner
  • Volume : 500 ml
  • Model No : F3
  • Pack Size : 1
  • 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

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€18.95 Incl. 23% VAT

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Fernox F3 Central Heating Cleaner 500ml is rated 4.6 out of 5 by 18.
Rated 5 out of 5 by from Excellent results Cleaned a very clogged system well, huge difference in performance and after flushing a couple of times prior to adding protection the water looked very clean.
Date published: 2019-04-17
Rated 5 out of 5 by from Fernox F3 Good effective cleaner and Click and Collect process faultless. Fernox was initially provided by Worcester Bosch, good enough recommendation for me!
Date published: 2019-01-19
Rated 5 out of 5 by from Fernox F3 Quality product, does what it says. My heating system is over 40 years old and still running like new. Maintain it every year
Date published: 2018-06-28
Rated 5 out of 5 by from Noisy boiler Put this in the header tank, as the boiler was getting noisy, after draining the system and refilling, I ran the heating for a couple of hours and the noise issue has gone. Will drain down again after a week, and refill, using F1.
Date published: 2016-12-31
Rated 5 out of 5 by from Good product Good quality product seems to have done the trick good price
Date published: 2016-10-29
Rated 4 out of 5 by from Simples! Easy enough for the home DIY'er to apply to header tank after draining the system, let it work, refill and redrain. Unfortunately it was too late for me to avoid a new pump install but have Fernox f1 inhibiter to put in the tank to help prevent future clog ups.
Date published: 2015-07-22
Rated 5 out of 5 by from Superb Cleaner I've had an extremely noisy heating system for the last year, put one bottle in and no result. drained down and put three bottles in, no result for three days and I finally slept through heating coming on in the morning. Brilliant product would recommend it to anyone.
Date published: 2014-12-21
Rated 5 out of 5 by from Good Cleaner I was surprised how clear the water was when I drained the system for the first time in years to change a valve. However, after running the system overnight with the cleaner I was pleased to see some discolouration when I drained the system for the 2nd time.
Date published: 2014-11-10
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