Trade Chemicals C100 Central Heating Inhibitor, 500ml

Trade Chemicals C100 Central Heating Inhibitor is a 500ml concentrate listed to treat 100L of heating-system water. The manufacturer says it helps limit corrosion and scale, as well as hydrogen gassing, microbiological growth and boiler noise. Its usefulness depends on dosing for the system volume and following the instructions.

At a glance

Concentrated inhibitor for central-heating boilers, radiators and internal pipework.
Manufacturer claims it helps reduce corrosion and scale build-up.
Also claimed to help control hydrogen gassing, microbiological growth and boiler noise when used as directed.
The listed 500ml bottle is stated to treat 100L.

Price

£7.64Save 24%

Reference price: ~~£9.99~~

Price checked: 12 Nov 2026

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Often bought together

Prozwee Transparent Central Heating Dosing Tool,Radiator Dosing Funnel - For Adding Fernox central heating inhibitors, sludge removers, leak sealants, and Sentinel X100 chemicals

£13.99

Pros and cons

Pros

Combines several stated protection aims, including corrosion and scale control, in one central-heating treatment.
The 100L treatment claim gives a basis for matching the bottle to system volume.

Technical specifications

8 specifications

Identity
Brand	Trade Chemicals
Part number	C100

Treatment and use
Volume	500ml
Claimed system capacity	Treats 100L

Dimensions and installation
Weight listed	500 g
Package dimensions	17.9 x 8.2 x 5.7 cm; 500 g

Pack details
Item package quantity	1
Batteries included	No

What to know before buying

Dose according to heating-system size and follow the instructions. For gravity-fed systems, the supplied directions describe draining, adding the dose via the feed and expansion tank, refilling and venting. A pressurised method is also mentioned.

Who is it for?

A good fit for

Householders or heating professionals seeking a central-heating inhibitor for boilers, radiators and pipework.
Buyers whose system volume fits the listed 100L treatment claim.

Less suited to

Buyers who need a product for a different system type or a treatment capacity not supported by the listing.

Trade Chemicals C100 Central Heating Inhibitor, 500ml · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 370 ratings

5 stars80%80%
4 stars15%15%
3 stars4%4%
2 stars1%1%
1 star0%0%

Customer feedback describes the inhibitor as good quality and effective for helping prevent corrosion, scale and microbial growth. This aligns with the product's stated purpose, but feedback does not independently establish performance in every system. The supplied rating distribution is predominantly five-star, with some lower ratings, and does not explain individual experiences.

Positive themes

Customer feedback highlights perceived quality and functionality.
The supplied review summary reports perceived effectiveness against corrosion, scale and microbial growth.

Frequently asked questions

How much system water does this bottle treat?

The listing states that the 500ml bottle treats 100L. Match the dose to the system size and follow the product instructions.

What does the inhibitor claim to help control?

The manufacturer claims it helps reduce corrosion and scale and helps control hydrogen gassing, microbiological growth and boiler noise when used as directed.

Can it be used in a gravity-fed system?

The listing gives gravity-fed directions involving draining the system, adding the required dose through the feed and expansion tank, then refilling and venting. It also mentions a pressurised method.

Does the listing say overdosing will harm the system?

It says overdosing will not harm the system when used as directed, while also advising users to choose the appropriate quantity for system size.