How to bleed a radiator: A very simple guide

29 Jan 2020

how to bleed a radiator simple step by step guide

"How do you bleed radiators?"

A simple guide to do it yourself

Wondering how to fix your radiators yourself? Great! Not only have you come to the right place, you're about to discover it's actually really easy to do on your own

Warning signs and knowing when it's due:

If you find that a room in your house isn’t as warm as it used to be or maybe you’ve noticed that a radiator isn’t completely heating up, it might be time to bleed your radiator.

Also, listen for noiseWhen air builds up, radiators start to clang and become noisy.

Ideally, you’d be bleeding them annually. However, many of us put if off and only end up doing it when it’s needed. So how we do bleed a radiator when the time comes?

What you'll need:

- Radiator key (or a screwdriver in a pinch)

- Old towel

- Small bucket or wash bowl

How to bleed a radiator:

Even if you’re not the handiest around the house, it’s not very difficult to bleed a radiator.

First of all, you’ll need to go and find your radiator key – you were definitely given one when the radiators where installed (so start checking that mysterious junk drawer in your kitchen).

In case you can’t find it, fear not! You can pick one up on the cheap in any hardware shop or simply use a screwdriver.

Bleeding a radiator in 4 easy steps:

radiator bleeding guide step 1
1. Turn off the heat in the house. Bleeding a radiator that is currently turned on can introduce more air into the system, so you’ll want the radiator to settle completely before releasing the trapped air.
radiator bleeding guide step 2
2. Once everything’s cool, insert the radiator key and turn counter-clockwise to open the valve. You should hear a hissing sound as air escapes the radiator. This allows water from your heating system to fill the space left by the air.
radiator bleeding guide step 3
3. As air escapes from the radiator, you will see some water 'bubble' or 'splutter' from the valve. If you regularly bleed your radiator, a tea towel is all you’ll need to keep your floor dry, but for bigger jobs take out a washing up bowl or bucket.
radiator bleeding guide step 4
4. Finishing up! Once a steady stream of water begins to spurt through the valve you will know that you have released all the trapped air from your radiator. Re-tighten the valve, ensuring there are no leaks and wipe the area dry.

Still in a fix? 

If you need a helping hand, or, if you've followed the steps above but are still having issues with your heating, it's probably time to call in a pro. To help you find the best rates in your area, try searching for a local plumber right here

Simply hop here or post your job below and we'll find pros and quotes for you to compare in no time!

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