how do i bleed my radiator?

Question

i have a radiator in my upstairs bathroom thats warm on the bottom and cold at the top. i hve been told it needs bleeding but wot is that and how do i do it?

Answer 1

go to a harware shop and buy a radiator bleeding key, when your central heating is on insert the key in your radiator and gently turn maximum of three turns or the bleeding nipple will shoot out.if u hear a hissing sound thats the air comeing out ,once water squirt out tighten and and watch your rad warm up. there simple!!

Answer 2

Ensure that the central heating is switched off before bleeding or this can introduce even more Air into the system.
If you have a header tank ensure that the water supply is not isolated to this tank! If you have a boiler which requires manually topping up like a combi then top it up after and possibly during bleeding (depending on how much pressure there is left in the system)
Ensure both valves at the bottom of the radiator are open.
Using a radiator bleed Key insert it onto the Brass bleed screw at the top of the radiator.
Have some kitchen towel or a cloth to catch any drips and slowly turn the key anti-clockwise, about half a turn. You should hear hissing, which is air being forced out by the water.
As soon as water squirts through the bleed screw, re tighten it and make sure it is not leaking before moving on to the next radiator!
Repeat this on all radiators.
Top up the boiler if necessary!

Answer 3

We have just dealt with this but here we go again.
Go to a diy shop and buy a radiator bleed tool a brass one is best. At one end at he top of the radiator there is a plug inside of which is a small square brass plug. The bleed tool fits in the there and over the square. While the system is on put the bleed tool in and turn it anti clockwise until you hear the air hissing out and then stop turning. You may need a pair of pliers to start it as they sometimes get stiff. If water comes out just tighten it again as the problem is not air. When all the air is out a trickle of water will run down the radiator. Wipe this with a piece of rag. Tighten the bleed tool clockwise. Finger tight should be enough
It is very easy to do as long as you do not unscrew the bleed screw completely

Answer 4

Use a bleeding key to open the valve at the top side of the radiator ( you can get a key from a hardware shop). Air should hiss out and if the heating is on, water should rise through the radiator. Have a cloth ready to mop up any dripping as the water reaches the valve. When water reaches the valve, tighten it and the radiator should function properly.

Answer 5

You should have a small key to fit on the square pin for the want of the proper name, turn the key anti clock wise very slowly, and let the Hot air out, better do this holding a small tub or glass underneath to catch any water that spills out. If you do this be care full if the bottom of the radiator is hot , better waiting until it is a bit cooller
If you have a homebase store near you I have seen a tool there which the tool has a container to do the job in one .

Answer 6

radiator key - insert top right hand side, and, having ensured that you have a cloth handy, open the valve using the key (remember left loosey, righty tighty). The air will escape, allowing the hot water to get into the top of the radiator. Once all the air has escaped, water will begin to come out of the valve, so now close it firmly with the key.

Ta da, one bed radiator. Now off downstairs for a cup of tea, you've deserved it.

Answer 7

You need to go to a hardware store and ask for a radiator key, about one dollar, on the end of the radiator at the top, there is a little nozzle, about the thickness of a pen, turn the key just a little until all air is out and water starts to drip, you should do all radiators in your house. especially when its time to put your heat back on after summer.

Answer 8

at the top right hand or left hand side at the back of the radiator you will see a little screw. it shaped like a fifty pence. you need a special radiator key to unscrew it. make sure you have a container handy because when you start to unscrew you will hear a hissing noise. don't panic that is just the air coming out. you will slowly feel the radiator getting warm and when the reaches the top screw tight again. good luck i will be doing the same myself this weekend.

Answer 9

temporarily - specific you are able to, and it does sound such as you do would desire to bleed them. there will be a bleed valve on the astounding of the radiator which you will turn (would would desire to get a wee key for this), which will launch the air. whilst the combi equipment replaced into put in they'd have put in the astounding quantity of water to maintain the equipment pressurised. So by potential of taking air out of the equipment you will decrease the rigidity in it. interior the combi boiler there will be a manner of putting water into the equipment to swap the air you have taken out. You do would desire to be careful that as quickly as doing this you do no longer over-pressurise the equipment (usually a million.5 bar is the utmost). it somewhat is a reasonably at as quickly as forward technique, only take care. I actually have a combi boiler & heating equipment and do on occasion bleed the air out, it somewhat is not something unusual so no would desire to fret.

Answer 10

You need to let out some of the water using the radiator key