How to bleed a worcester boiler?

British manufacturer Worcester Bosch has been one of the best domestic boiler manufacturers since 1962. Worcester is a part of a reputed brand Bosch. They have a wide range of heating appliance including the boilers and solar heating solutions as well. They have always been committed to delivering reliable and efficient central heating products to their customers.

Worcester boilers are one of a kind. They were the pioneer of the combi boiler in UK. They provide best quality and cost-effective boilers to the users. This brand is said to be the synonymous with quality and reliability because of their premium products.  They believe in making the best for their customers and aims in making environment friendly products as well. In fact, this brand is the UK market leader in domestic boilers and has even supplied boilers to her majesty The Queen’s Sandringham Estate.

Also they believe that not all boilers are same, nor the demand of every individual is. Therefore, for that instance they have offered the best range of boiler for every property size which will be compatible with every demand and need of the customer.

Bust sometime it happens that your boiler gets stuck while operating, this may be due to some fault or an issue. First notice carefully and find the fault in your boiler. If you think your boiler need to bled, then not to worry we are here to help you.

We will tell you simple steps about how to bleed a Worcester boiler which will surely makes your boiler work perfectly again.

  1. To bleed the air, before the start of the process you need a wrench, tubing to slip over the bleeder and a catcher to catch the oil.
  2. You can use brake bleeder wrench. They come with two ends sized differently. Also there ends are the box ends wrench that right size will work well.
  3. Now you can take clear tubing which can be pushed over the bleeder and remember it should be long enough to reach the container that will catch the mixture of the fuel and the air that you are going to bleed.
  4. Now for a container, you require something which doesn’t matter or reacts when fuel oil is put into it, for this you can use any plastic bottle.
  5. Also gets an aluminum tray or a plate which should be kept under the area to prevent the spills on the floor as the reaction going to spills stinks.
  6. Now you need to find the bleeder screw on the oil pump section and put the wrench on it.
  7. Make the positioning in the way you are convenient to operate. You just need to turn the wrench to open the close screw.
  8. Place the wrench and check it
  9. Now push the tube over the bleeder and into the correct place.
  10. Put the other end into the plastic bottle.  Now you can bleed the air out.
  11. Now locate the reset button on the oil burner control and press it
  12. Open the bleeder screw and let the mixture of oil and air run into the plastic bottle.
  13. Just keep a notice, when the fuel running out of the tube loses the milky color, this means the air has been bled out.
  14. Close the bleeder valve and the burner should light
  15. However, if the burner goes out on reset before all the air is bled out, immediately close the bleeder as soon as you can and now repeat the bleeding process until the air is gone.


Remember always do the following steps with the precautions. Do not harm yourself while doing all these steps. If you think your problem is bigger than contact the expert as soon as possible.

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