Thanks Al, that's embarrassingly simple! I've always had a tank in the loft but my new home has a combi and I was scratching my head trying to work out where to put the cleaner.

Grate tip and advice as usual Al 👍

Thank you! This video saved me a tenner and buying stuff that I was only gonna use one

Love this channel. Much appreciated.

I have a sealed system and did that with my bathroom towel radiator but having poured in all the inhibitor I filled the empty container with water and poured that in until it reached the very top. Quicker to re-pressurise and of course I swilled out the very last drop of inhibitor.

Super video, thanks, really helped

Like the painting of bude!

Careful with new modern TRV's on towel rads, even when closed to their OFF setting (frost symbol) they don't shut the water off to the radiator as they dont push the little pin in the TRV carcass all the way that stops the water so there's pressure continually getting into the radiator. Always best with the new TRV's to unscrew the securing ring to release and take off the thermostatic head from the TRV base, find or borrow the plastic blanking cap that came with the unit, and screw that on firmly in it's place so it pushes the pin and stops the water/pressure. Then after checking the other side valve is fully closed, then the towel rad can be bled with a bleed key and top sealed nuts loosened.

I found an angled pipe fitting in my garage, which had the same thread as the plug hole. I used some putty on the thread to prevent any spills, which got pushed to the thread end. The open end of the pipe fitting, pointing upwards, was higher than the water level in the radiator. I used a small funnel to pour in the inhibitor, followed by some clean water to rinse. Easy !

Nice one al 👍👍

Lovely picture of Bude behind you Al!

Another top vid!!! Inhibitor is something that's meant to be added approx every two years i understand. Can you simply do this every two years or do you have to start worrying about dilution rates after the first time of doing this? As I assume if u don't fully flush the system down there will still be some "older" inhibitor in the system?

Great video. Is it best practice to open all the lockshield and TRV valves when adding a cleaning solution like Fernox F3 to a f&e system? I assume this would help all the sludge to pass through the system?

Is this the same for leak sealant. I've tried twice on with fernox and sentinel express systems and it never worked. So I'm going to try the liquid version and this seems quite straightforward

Excellent, thanks! Incidentally, are you from the same part of the world as Stanley Unwin? I think you sound a lot like him, (except I can understand you a bit better!)

Hi Al, how do you wanna do the bottom? Where does the water go? How do you collect the water? How do you connect it all up how much of it do you take out my radiator goes right to the floor does this mean I have to take the radiator off how do you do that great video if you’re a plumber

👍👍👍AL

my heating system has a shut valve that flushes directly to the sewer system... should I drain my heating system using this valve or the way you described in the video is better? thanks

Dear Al, if I want to add Inhibitor myself, but don't want to drain the system again (and risk more air getting in!! :( ) but don't have a towel rail (open, F & E, condensing boiler system), is it possible to do it via another radiator? Which would be the best one? Do you have a video for this? Thank you as always for all your help, Isla

hello mate couple of questions how much inhibitor do you put in qnd also your not turning the main water off just the shut off and trv at the towel rail 👍

Make sure your radiators are cold when adding any chemicals into the system as you don't want to burn yourself

Could you answer this quesion for me please ? I really liked the tutorial about introducing inhibitor into the central heating system through a radiator. My question is : Would it be possible just to use a syphon to drain off 500 to 100cls? Silverline do a syphon that looks ideal. Thanks for your interesting videos.

Will this get rid of sludge that could be causing overflow from the f and e tank?

The very first time i fitted rad I had the presence of mind to fit a valve with a drain tail. It happened to be right next to the back door too so I can drain the whole system easy peasy. Why isn't that standard practice?

My towel radiator is on the hot water circuit and not the heating circuit (regular system boiler). Will this method still work OK?

How often do u need to add inhibitor ...don't think we've done ours for 10 years. Is that bad? 🙈

Can i do the same and it will go to all my other radiators around the house ? Shall I switch boiler off when doing this ?

Hi. I have a Gibraltar towel rail in my bathroom. I’d like to know what way do I turn the tap handle to turn radiator off

Can you add some inhibitor without draining the heating system?

Did this this afternoon, now my towel rail doesn’t work at all 😂 all other 7 radiators work fine though.

@Dereton33 I am going to post a comment on 1 of your videos from 7 years ago about compression fittings and pointing compound. I would leave the comment here but it may confuse some viewers. I just posted here so you would be aware of my intentions, I would like to know your opinion on a particular problem. Thanks.

Can i add inhibitor and leakage sealer at the same time ?

If you have a drain value downstairs why not just drain a little from upstairs .open air vent value and pour it in thier ,instead of opening valve in bottom.

Just for a layman, why would a central heating system need cleaning?