What central heating inhibitor should I use? Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[Gary G]

Could someone tell me what inhibitor to use for my central heating.
I have a main 24he combi boiler.
Not sure if I have an indirect system or not.
How do I tell?
Thanks

[stoneyboy]

Hi gary g
Your type of boiler does not matter, try and find a label on your system which tells you what inhibitor has been used before. Otherwise you will have to consider how you can dose your system see what is available
Regards S.

[Royort]

I always used to use Fernox, but that has increased in price considerably over the years, a plumber suggested Screwfix’s own brand which seems to do the job ok at almost half the full price of Fernox.