£11.98 was £16.09 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.

Technical Specification
Brand Fernox
Safety Data Sheet click here
Volume (L) 0.5
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm
Due to temporary service restrictions our estimated delivery time is currently 2-3 business days
£5 Free
Turbo usually Next Business Day before 12 noon Temporarily unavailable £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£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
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Reviews
Fernox F3 Central Heating Cleaner 500ml is rated 4.3 out of 5 by 3.
Rated 4 out of 5 by from Heating system flush Easy to use, removed deposits, don’t know what’s left in system!
Date published: 2020-02-15
Rated 4 out of 5 by from Does what it says.... Did the job, cleared out the muck, much improved heat output
Date published: 2020-02-10
Rated 5 out of 5 by from A tale of blocked rads F3 was recommended by a heating engineer to clear up the sludge which mainly affected 3 downstairs radiators that got progressively cooler and stopped working. F3 was applied via the magnetic cleaner and the rads started coming back to normal operating temperature within a few hours of continuous running and some agitation to dislodge the baked in sludge.
Date published: 2020-02-03
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