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Bleeding your radiators

Whilst you may think that radiators are the type of thing that you can just turn on and they work. However, this isn't always the case. Sometimes you are going to need to take care of these important parts of your home. One of the most common jobs that you are going to need to do on your radiator is to bleed them. But what does bleeding them involve and it is a tricky to do it?

Why do you need to bleed your radiators?

Over time, small amounts of air will enter your central heating system as the mains water flows through it. This air, then will collect at the top of the radiator and this will prevent the top part of it from filling with the gloriously warm water, and will reduce the amount of heat that the radiator kicks out.

In order to stop this problem from arising, you need to bleed your radiators on a regular basis. This process will release the trapped air from within the radiator, and it will ensure that your central heating system is performing efficiently. The job doesn't have to be a tricky one, and if you are unsure on how to do it, then you need to ensure that you ask a plumber to do this for you.

How to bleed your radiators

You will know that your radiator needs bleeding because when you touch it you will see that there are cool spots, particular near to the top of the radiator. If you notice this, then the time has come to try and bleed them. To do this you will first need to ensure that you have turned your heating off, and give it some time for your radiator to cool down, the last thing you will want to do is to burn yourself with hot water from inside the radiator.

You will also need to make sure that you have a cloth or a bowl to make sure that you minimise the risk of any mess and water being spilt all over your floor.

In order to bleed your radiator, you will need a radiator bleeding key, or if you have a modern radiator then you will only need a flat- headed screwdriver. At the top of your radiator there will be a valve that you can place the key or screwdriver into, you will need to slowly turn this valve anti-clockwise. As you do this, you will hear gas escaping, in the form of a hissing sound. Eventually, the gas will stop coming out, and instead you will have water coming out instead. As this happens, it is important that you close the valve quickly and stop water from coming out all over the floor.

Once you have bled your radiator, you need to check your hot water system pressure. If you have bled a lot of gas, then you may find that the pressure of the system is low, which means that you will need to top it up using the filling loop which can be found on your boiler.

You should be able to turn your radiator on and find that the radiator warms up just as it should. If it does, then you have successfully bled your radiators!