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Monday, March 12, 2018


Bleeding a Radiator in Your Home

Bleeding a Radiator in Your Home

Bleeding a Radiator

Step – 1

A radiator in need of bleeding usually has cool air trapped in its upper portions. Upon switching on the heat, the top of the radiator or the entire radiator remains cold. However, these symptoms might warrant some other problem other than the need for a bleeding. To be sure;

• Check other radiators, if all of them are lukewarm then something else is wrong with your boiler system. There might be sediments in your boiler system that are hampering the heat flow.

• If the radiator has water under it apart from the coldness, then the radiator has a leak. Turn the heat off and tighten the nuts on your radiator’s inlet valve.

• If the radiators on the first floor aren’t warming up but the radiators on the lower floor are; your boiler system isn’t operating at its full capacity and hot water isn’t able to come to the top floor.

Step – 2

Get a hold of your radiator key to open the radiator’s bleed valve. This valve is situated at the top of your radiator on one end. The valves come with a square bit that can be turned for adjusting the valve. It is advised that you bleed every radiator in the house if you’re bleeding one of them.

Step - 3 

This is important because if the heat is on, chances are you’ll end up hurting yourself. Heating engineers advise that you should always switch off the heat before bleeding radiators because an active heating system pushed more air into the system. Once you’ve switched off the heating system, wait for sufficient time to allow the heat in the system to dissipate. Make sure you check your radiator and if any part of it is still hot, wait before you move to next step.

Step - 4

Open the valves of your radiator and ensure that the intake and outtake valves of the radiators are turned to ‘open’. Once you’ve ensured that, turn the bleed valve bit counter-clockwise to open the valve. If you’ve done everything correctly, you’ll hear a hissing sound signifying the air escaping from your radiator.

Step - 5

Make sure you have a kitchen towel with you to catch the drips from the valve. Once air escapes from the radiator, water will sizzle from the bleed valve. Having a towel or a bowl will keep you from making a mess!

Step - 6

Be patient and wait until water stops squirting out of the bleed valve. Once a steady flow of water takes over the sputtering mix of air and water, tighten the bleed valve because you’ve successfully removed the trapped air from your radiator. Turn the bleed valve bit clockwise to tighten it and make sure that no water is escaping from the valve.

Step - 7

Repeat this step for all radiators in your house. This is advised, even if you’ve been experiencing problems with only one radiator. Boiler servicing service usually takes care of this but if you’ve not been maintaining your boiler system, then chances are other radiators are also prone to entrapping air.

Step - 8

Check the pressure level on your boiler. Now that you’ve released the excess air from the radiators, the overall pressure of your residential heating system has been lowered. Top off your boiler with water if the pressure is too low to ensure the optimal working of your boiler.

Boilers are complicated systems and we would suggest that for boiler repair in north London, whether small or big, hire professionals. You can check out some of the advantages of hiring emergency boiler repair services here!


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