Best Central Heating System Fix Solutions – 2019

It took me some time to discover how to quiet the clanging and knocking in my old central heating system and it has proven to be the best of central heating radiator fix solutions.

I use Fernox. It works.

It not only removes the noise within 24 hours, but you can also clean, protect and even seal leaky systems with the Fernox range of products. (I cannot tell you how glad I was to NOT be woken at 5.30 am by the banging and knocking!)

By the way, I am super grateful and therefore must pay my dues to this wonderful plumber who introduced me to Fernox and then via Youtube, taught me to bleed and flush my central heating system.

Check Up Your Boiler

With the winter heading in, most of us have to do a radiator and boiler check-up. Plumbers and boiler services are not cheap…and not always done properly! So I wanted to service my central heating system myself and eventually found the Fernox range of self-services central heating radiator flush solutions. They are so good they are rated Amazon Choice products (which are better by far than the bestsellers.)

For the best central heating radiator fix solutions, try the Fernox range will cover all bases and can be used in new and old central heating systems. I for one, am glad I found them via an experienced plumber on youtube!

The Fernox Range of Products

  • Fernox 1 – protects against corrosion and scale when used with Fernox 3 cleaner.
  • Fernox 2 – reduces boiler noise and improves heat transfer efficiency
  • Fernox 3 – removes sludge, flux and debris
  • Fernox 4 – plugs small internal weeps and leaks in central heating systems
  • Fernox 5 – sludge remover for heavily contaminated systems when power flushing.

Fernox 1 – Protecting Your Central Heating Radiators

Top rated amazon choice protector.
Protect new and old radiators

This is top-rated and an Amazon Choice product for central heating radiators and boiler flushing which you can do yourself. There’s no need to call in plumbers (although you can if you wish to do so.) You can clean the radiators yourself!

Your system will need protection against corrosion and the build-up of the fine debris in the water passing through your system. The protectant is best used with the Fernox cleaner to maximise the longevity of its protectiveness. The Fernox F1 solution will do the following:

  • Protect Against Corrosion & Scale
  • When Used with F3 Cleaner Can Achieve 15% Gas/oil Savings
  • Stop Frequent Venting of Radiators
  • Prevents Sticking Pumps
  • Prevents Radiator Cold Spots
    Find out the full report here!
    (You can also purchase the fast install version with the radiator feed nozzle.)

Fernox 2 – Reducing the Central Heating Boiler and Radiator Noise

I was very relieved to discover the Fernox 2 solution which is specific to quiet boiler and radiator”kettling” or clanging.

This solution will effectively stop the noise ins a system of 10 radiators. While it can be used on its own, it will save more energy and money if used in conjunction with the cleaner F3.

Find the full details here.


Fernox F3 – Your Central Heating Radiator Cleaner

The Fernox F3 is a boiler and central heating system cleaner which is one of the best Central Heating Radiator Flush Solutions on the market and Amazon Choice rated by customers. It is popular primarily because it is pH neutral and non-hazardous so that anyone can use the solutions at home.

Cleaner F3 removes flux residues and other debris to help extend the life of the boiler and the efficiency of the system.

  • Removes sludge, flux and debris from new and existing central heating systems
  • When used in conjunction with Protector F1 gas savings of up to 15% can be achieved
  • Neutral universal cleaner for pre-commissioning new systems in accordance with BS7593:2006
  • Treats 100L system or up to 10 single radiators
  • Compatible with all metals and materials commonly used in central heating systems.

Fernox F4 – Leak Sealer

The Fernox F4 will seal any internal leaks in your central heating system and retain good pressure in your sealed system.

  • Ideal for reducing pressure loss from sealed systems
  • Seals most holes and small inaccessible leaks
  • Saves time and money on draining down and repairing
  • Does not cause blockages of the pump, air vents etc
  • Compatible with all metals and materials commonly used in central heating systems

Filling The Radiator

Here’s a tip. Notice the bottle? It comes with the nozzle to feed the radiator. The hassle of feeding the radiator is a big one when you are a basic DIYer like me. So the nozzle is a real timesaving benefit – unless you want a royal mess with a straw and Fairy washing up bottle (that would be me…it did work eventually.)

If you are thinking of doing a similar service every year or two, you can invest in a proper easy filler tube which makes it faster into which to pour the Fernox.

Full details here.


After warm summers when the radiators are barely used, boilers normally need a  service prior to the winter season. You can pay a plumber to input these products (it’s always easier but a bit pricey) or you can do it yourself if you follow good instructions like this one below.

The Fernox central heating radiator fix solutions are proven to work and are pH neutral, non- hazardous easy to use. It can even save your costs by 15%.

How Fernox Gets Rid of the Racket

The most common cause of boiler noise, also known as ‘kettling’, is limescale deposition within the heat exchanger of the boiler. This condition is worsened if magnetite is also present in the system, as this combines with the limescale to form a much harder deposit.

To get the full explanation of how and what it is, click here.

So Here’s My Opinion

This family of central heating system products really work.

If you need to get that central heating system flushed, quieted and working efficiently, I would suggest reading up on the Fernox website about all the products. You don’t need to use all of them either:- maybe just Fernox F2 and F1 or maybe only F2 , depending on the system issues.

Best of all, you can gain savings of around 15% on your gas bill!

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