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🔥 Keep your heating flawless & efficient — because your home deserves the best! 🏡
Fernox 56599 F1 500 ml Central Heating Protector is a premium liquid formula designed to safeguard domestic heating systems from corrosion and limescale. Compatible with all common metals and materials, it enhances system longevity, prevents cold spots and pump issues, and can deliver up to 15% gas savings when paired with Fernox F3 Cleaner. Ideal for professional-grade maintenance, it ensures quiet, efficient radiators and a cleaner boiler system.
| ASIN | B003HQ97E4 |
| Best Sellers Rank | 4,787 in DIY & Tools ( See Top 100 in DIY & Tools ) 28 in Central Heating System Accessories 98 in Pumps & Plumbing Equipment |
| Brand | Fernox |
| Brand Name | Fernox |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.7 out of 5 stars 2,128 Reviews |
| Global Trade Identification Number | 05014551565999, 05698292057540 |
| Included Components | 1 x Fernox 56599 F1 500 ml Protector |
| Item Form | Liquid |
| Item Type Name | F1 500ml Protector |
| Item Volume | 500 Millilitres |
| Item Weight | 1.1 Pounds |
| Item form | Liquid |
| Item volume | 500 Millilitres |
| Manufacturer | Fernox |
| Material Features | Natural |
| Material Type Free | Acid Free |
| Material feature | Natural |
| Number of Items | 1 |
| Scent | Almond |
| Special Features | Removes limescale |
| Specific Uses For Product | Indoor use only |
| Specific uses for product | Indoor use only |
| Surface Recommendation | Metal |
| Unit Count | 500.0 millilitre |
J**N
Excellent product.
I have been using this product in my central heating system from the new installation which is now 10years ago. I use a full bottle every three years to keep the protection at the highest level for the system, to ensure that all is well within. This has proven to offer excellent protection to the boiler, pipework and radiators. Today I had my heating inspected, boiler serviced and also added an additional radiator to the system by my excellent central heating engineer, who stated that the system and boiler is in exceptional condition for its age and very clean within internally, with no water discolouration or sludge present. Before re-pressurising the system he added a bottle of this via the new radiator to top up the protection of the system.
W**N
recommended by plumber
Great product for keeping the heating system in good condition. Easy to use and gives peace of mind that everything is protected. I noticed the radiators run smoothly, with no strange noises or issues. A reliable solution that does exactly what it should. Good value for money and worth adding during maintenance. Would recommend for anyone wanting to look after their central heating.
M**N
Sealed pressurised system
I’m sure that the inhibitor does its job in the system, however, it would have been useful if it came with an adapter for filling through a radiator of a sealed pressurised system, which is more common these days.
L**S
Good
The best
S**N
Good price
Quick delivery
D**N
Great
Does exactly what it is supposed to do.
R**S
Fernox
Best on the market
B**7
Works well on my old system
Boiler and system 37 years old and going well. Put this in after a new pump fitted. Hoping it will add more years. Who needs an air source heat pump when oil is so cheap.
Trustpilot
3 weeks ago
1 day ago