How do i add this f1 to steam boiler? can i add it through an air vent hold on a radiator? thanks

My boiler isn’t steam, it’s hot water. But the directions that I was given was to remove/drain all of the current water in the system completely after the boiler has cooled off. Then add the cleaner. Now what I did was to add a shark bite “T”and poured it into the system as I didn’t have another other place to put it in. Then I removed the “T” and replaced it with a coupler. But on a steam system I would think that you could add it to your radiator top vent and put it in then refill the system. After it’s refilled your going to run it if a few days. I’m doing mine a little longer, like 10 days. So during that time the chemical is going to move around and clean the system. Just make sure you turn off the boiler before you start doing any work on it. I hope that this helps

How many gallons will this treat?

My bottle says that it will treat up to 34 US gallons.

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Fernox 56599 F1 500 ml Central Heating Protector

Fernox 56599 F1 500 ml Central Heating Protector

Product ID: 92537112

Details

Brand
Fernox
Item Form
Liquid
Material Feature
Natural
Scent
Almond
Specific Uses For Product
Indoor use

⚡Up to 15% gas savings

🔥Stops radiator cold spots

🛡️Corrosion & scale defense

€ 96.34

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Description

🔥 Keep your heating flawless and your energy bills low—because comfort is non-negotiable!

PUMP PROTECTOR - Prevents sticking pumps to avoid costly repairs and downtime
RADIATOR REVIVAL - Eliminates cold spots and frequent venting, ensuring consistent cozy heat
ENERGY SMART FORMULA - When paired with F3 Cleaner, cuts gas bills by up to 15%—save while you stay warm
ULTIMATE SYSTEM SHIELD - Protects all metals from corrosion & limescale for lasting heating efficiency
UNIVERSAL COMPATIBILITY - Works seamlessly with all boiler types, radiators, and pipe materials

Fernox 56599 F1 500 ml Central Heating Protector is a natural, acid-free liquid designed to safeguard domestic heating systems from corrosion and limescale buildup. Compatible with all metals and materials in boilers, radiators, and pipes, it enhances system longevity and efficiency. Used alongside Fernox F3 Cleaner, it can reduce gas consumption by up to 15%, while preventing radiator cold spots, pump sticking, and frequent venting for a consistently warm home.

Specifications

ASIN	B003HQ97E4
Best Sellers Rank	#139,543 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #611 in Industrial Lubricants #7,787 in HVAC #15,835 in Pumps & Plumbing Equipment
Brand Name	Fernox
Customer Reviews	4.6 4.6 out of 5 stars (28)
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 ml
Item Weight	1.1 pounds
Manufacturer	Fernox
Material Features	Natural
Material Type Free	Acid Free
Model Number	56599
Number of Items	1
Part Number	56599
Scent	Almond
Size	16.91 Fl Oz (Pack of 1)
Special Features	Removes limescale
Specific Uses For Product	Indoor use only
Surface Recommendation	Metal
Unit Count	16.91 Fluid Ounces

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€ 96.34

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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