How to bleed a radiator
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- Опубликовано: 12 июл 2024
- In this video I explain how to bleed your radiators, including the tools you'll need and hints and tips on topping up the pressure afterwards.
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Kitchen towel or similar to catch the water
Bleed key - geni.us/M752Aq (Amazon)
For modern radiators you will typically just need a flat headed screwdriver, although the traditional bleed keys also fit the flat head screw bleed valves.
If you're after a screwdriver, I used a short handled screwdriver in my video as longer screwdrivers wouldn't work where the radiator is close to the wall. Something like this will work well geni.us/qyxSU (Amazon)
Most central heating systems today tend to be pressurised, and it is this sort of system I talk about in my video. If you have a more traditional open vented system, you will not need to top up the pressure after you've bled your radiators.
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Best video I found, clear concise and very well explained.
Thanks Lesley 👍🏻
Thank you. I have this type of modern fitting on my radiators and found this video clear and extremely useful thank you :)
You're welcome Laura. Really chuffed you found the vid useful and thanks for the comment.🙏
Best video on this topic on RUclips
Thanks buddy, I really appreciate that. 👊
very useful. I watched a some other vids before this on and this one was the most helpful because I was unsure about the topping up the pressure. I thought I had to add water lol, silly me. Now I know how to do it. yay! thanks
Thanks for the comment. Glad you found it useful!
Excellent video. Exactly what I was looking for. 👍🏼
Great top tip, I have been doing this hot for years, but will take your trusted advice, thanks
You're welcome. 👌
Thanks this helped!
Thanks so much for this video. Just moved into a house that had the little plastic things on and was scared to unscrew the valve in case I broke something.
Thanks so much for taking the time to comment - glad it helped!
What happens if you don't have access to the boiler? Can I bleed it without having to cool it down?
Good video....
+Rick Stone Thanks Rick. Much appreciated!
Sorry for the novice question but is this best to do when the system is completely cold or when warm... obviously not red hot
Cold because that way you can keep topping up the system to the right pressure.
Charlie DIYte thank you. Bled my radiators and they are working so much better!! Next problem is making sure the mrs doesn’t have it on 24/7! Nest thermostat I think
@@andym8939 Well done mate and thanks for letting me know how you got on. How are you finding the Nest? Toyed with installing one here but it slightly freaks me out that it learns how you like your heating and I suspect my cottage is too small and simple to justify it 🤔
Hi Cahrlie. Can you add a video of how to isolate and remove a radiator from the system so that you can paint behind it? :)
I should do that Rod. You basically need to switch off both valves - ie the lock shield and the thermostatic side, open the bleed valve and then loosen the nut on the valve body where it's attached to the radiator at one end of the rad with a spanner and let it drip into a pan until it's completely empty. You can then release the other side and take it off the wall. You need to be very careful though as there will probably be a lot of sludge in the bottom of the rad, so you need to have plenty of protection down if you have a carpet, to catch any drips. I stained a carpet not doing this. If it's a pressurised system you also need to know how and where to top up the pressure when you refill the system. It's a good idea to take a note of what the pressure was before you start draining the radiator.
@@CharlieDIYte Great! Thanks
My system doesn't have a pressure valve meter ? . The central heating header tank is automatically topped up with the correct amount of water via its own stop cock, taking water from the main water tank, and so presumably stabilises the water pressure automatically.
That's correct Geoffrey. Sounds like you've got what is known as an open vented (non-pressurised) system.
OK so what about a radiator key when the bleeding valve is threaded
I thought you had to do the radiator furthest away from the boiler first (usually the bathroom)
Can u bleed radiators whilst heating boiler is on?
You can but you have to be a bit careful if the water is very hot and if it's a pressurised system you might not know what pressure to top it up to.
Obviously this video is for a combination boiler! If you have a fully pumped system with tank in the roof you won't need to alter any pressure valves at the boiler as the tank in the roof will automatically do this for you!
Not correct. That's a gravity system you're talking about. I don't have a combi boiler. I have a kerosene boiler in the basement, and a hot water tank in the bathroom fed by a tank in the roof, but my radiators are pressurised.
@@CharlieDIYte hello, how do you add pressure back ?
I've a few rads that are cold at the bottom and hot at the top
You've got sludge in the radiators. @plumberparts did a good video on this ruclips.net/video/xG2aPuN3wg8/видео.html
I have a problem. I have the same valve as on 3:30 - But i cant unscrew it to let the air out any idea ?
Have you tried using a bleed key? Might be worth getting one and applying a bit more pressure. It's probably seized up but should open with enough force.
Going sound stupid - but how are you “adding water into the system”? Just been told by my landlord all I need to do is bleed the radiators and that’s it so thought I’d RUclips first to make sure I’m loosening the right “screw” and obviously it’s not as simple as just get rid of the air in the radiator lol (none of my heating is coming on at all)
It depends if your system is pressurised Steph or gravity fed. Gravity fed systems automatically top up any water when you bleed the rads. Whereas a pressurised system needs to be repressurised - there's usually a filler valve somewhere - like in my vid or on a combi boiler if you have one of those.
Could you not play techno music across your narration as it’s very distracting...keep up the great work, really like your videos and thorough explanations. 👍🏼😉
I don't anymore. Sorry about that - it was a big mistake playing music through the entire video!
Charlie DIYte I totally understand, thanks for replying Charlie. I find music is more suited to montage sequence between narration or speaking. I’ve added music to some home movies and it can make or break them truly. The likes of James Horner, Hans Zimmer and John Williams really deserve all the credit they receive! Anyway, keep up the great work, your videos are very helpful and I’m a big fan (as well as a new fan!) 👍🏼😉
Mike Lanigan Thanks Mike! Couldn't agree more - and I use music now sparingly - only for the sped up sequences. It was all part of the learning experience - just wish I could delete it from the old videos 🙄 Thanks so much for supporting the channel - really glad you're finding the videos useful.