How To Bleed A Modern Radiator

How To Bleed A Modern Radiator

Ollie
| Interiors Specialist
Sep 23,2024

Knowing how to bleed a modern radiator is such a handy skill to know, especially if you want to keep your radiator operating at maximum efficiency for years to come.

In this Bathroom Takeaway guide, we take you through the step-by-step process of effectively bleeding a modern radiator.

How Would You Know If Your Radiators Need Bleeding?

To check if your radiators need bleeding, follow these simple steps:

  1. Turn on the heating and allow it to fully warm up.
  2. Feel each radiator - if the top is hot but the bottom is cold, no bleeding is required.
  3. If the bottom is hot but the top is cold, turn off the heating and proceed to bleed the radiator.

So.. How Do You Bleed Modern Radiators?

To bleed a radiator in your home, you'll first need to gather the following equipment:

  1. A radiator bleed key
  2. A container to catch any water
  3. Cloth or towel to soak up any additional leakage.

With the necessary supplies on hand, let's review the straightforward steps for properly bleeding a modern radiator in the UK.

Homeowner Bleeding Radiator With Screwdriver

Step 1 - Turn Off Your Heating

Before bleeding the radiators, ensure you have let your radiators cool down completely. Allow the radiators to fully cool off before attempting to bleed them as it will prevent any possibility of scolding.

Step 2 - Find The Bleed Valve On Your Radiator

The bleed valve, which resembles a round hole with a square inside, will be located at the top of the radiator. Place old towels underneath the valve and position a container on top to catch any excess water that drains out.

Step 3 - Loosen The Bleed Screw

To bleed a radiator, simply turn the bleed screw counter clockwise. However, be cautious, as only a quarter to half a turn is typically required. Avoid fully opening the valve, as this can cause a sudden rush of water once the trapped air is released.

Step 4 - Retighten The Screw

Once the hissing of excess air and water stops, you can then retighten the valve and clean up any resulting leaks.

Step 5 - Turn The Heating Back On

Now that the radiator has been properly bled, you are free to turn your heating back on. If you are doing it with multiple radiators use the same 5 steps across your remaining radiators.

Radiator Getting Bled With The Radiator Key

FAQ’s

Do Modern Radiators Need Bleeding?

Yes,for optimal performance, we suggest you bleed your modern radiators every few months. It's also a good idea to bleed them after extended periods of non-use, such as at the end of summer.

How Do You Bleed A Modern Radiator Without A Key?

Instead of a radiator key, a flat-head screwdriver is commonly used to bleed modern radiators. Radiators manufactured within the last 5-10 years often feature a small indentation that allows a flat-head screwdriver to be inserted into the bleed plug.

How To Bleed A Modern Radiator With A Screwdriver?

To bleed radiators with slotted bleed screws, simply use a screwdriver instead of a bleed key. Insert the screwdriver into the slot and turn it counter clockwise to release air from the radiator. This process follows the same steps as using a bleed key.

How Do You Bleed Tall Modern Radiators?

Are you unsure how to bleed tall modern radiators? Well don’t worry, it’s the exact same as a horizontal or your standard radiators!

Which Radiators Do You Bleed First?

Always bleed the radiators furthest away from the boiler in your home. If you are in a 2 floor or even 3 floored house, start from downstairs and work upwards!

Ollie

Interiors Specialist

Ollie is your guru for all housing interior inspiration, top tips, and new trends. The born & raised northerner has a keen eye for modern and stylish-looking interiors and is constantly on the lookout for the newest and best looks to suit your style.