How to bleed a radiator the right way

Want to know how to get your radiators heating like they should be and keep your home warm this winter?
We’re Gas Angel Heating, we’re based in Newcastle and have been looking after homes across North East England since 2007.
We’re here to tell you exactly how to bleed your radiators and give you some easy tips on radiator care.
In this guide, we’ll explain why it’s important to bleed your radiators and share some smart ways to make your heating system work better.

How bleeding your radiators helps

Bleeding your radiators is a simple but effective task that you can do yourself to make a big difference in how warm your home feels.
How to bleed a radiator: An easy, step-by-step guide:

Step 1: Gather your tools
Before you begin, you’ll need a few tools and materials:

  • A radiator key or a flathead screwdriver (depending on your radiator type)
  • A towel or cloth to catch any water
  • A container to collect any excess water (a small bucket or bowl will do)

Step 2: Turn off your heating
Make sure your heating system is turned off. You don’t want hot water circulating while you’re working on the radiator.

Step 3: Identify which radiators need bleeding
Walk around your home and find which radiators are not heating up properly. These are the ones that may have trapped air and need bleeding. Typically, radiators at higher points in your system are more likely to have trapped air.

Step 4: Locate the bleed valve
Each radiator has a bleed valve, which is usually located on the top side or at one end. It looks like a small square or hexagonal nut, and it may have a small hole in the center.

Step 5: Protect your floor
Place a towel or cloth beneath the radiator to catch any water that may come out during the bleeding process. Position your container or bucket nearby to collect the excess water.

Step 6: Bleed the radiator
Use the radiator key or screwdriver to slowly turn the bleed valve anti-clockwise (left) about a quarter turn. You should hear a hissing sound – this is the trapped air escaping.

Step 7: Watch for water
As the air escapes, you’ll eventually see water starting to trickle out of the bleed valve. When you have a steady flow of water with no air bubbles, it’s time to close the valve.

Step 8: Close the bleed valve
Carefully turn the bleed valve clockwise (right) to close it. Be gentle; you don’t want to overtighten and damage the valve.

Step 9: Turn your heating back on
Once you’ve finished bleeding all the necessary radiators, you can turn your heating back on.

Step 10: Check the radiator
Check the radiator to ensure it’s heating evenly. If it’s still not heating properly, you may need to repeat the bleeding process. If the radiator still isn’t heating properly it’s time to book an appointment with a heating engineer.

Expert heating help in the North East
Do you have questions or need help from a friendly local heating expert? If you’re in the North East, you’re in luck.
Our team at Gas Angel Heating is ready to help you with your heating needs.
Feel free to reach out to us at 0191 289 3464 or send us a message. We’ll be there to help in a jiffy.
Why radiator care matters
When it gets chilly and you turn on your heating, it’s important to make sure everything is running smoothly. If your radiators feel uneven or cold in some spots, it might mean there’s trapped air inside. This is where radiator care, specifically bleeding them, comes in handy.
Remember, Gas Angel Heating is here to provide expert assistance whenever you need it. Stay warm and cosy this winter, and don’t hesitate to get in touch if you have any questions.
Get in touch today for radiator help and advice…
☎️ Call 0191 289 3464
Or, send us a message, any time, day or night.

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