How to Bleed a Radiator in 5 easy steps

How to Bleed a Radiator in 5 easy steps


It's quite easy to tell when a radiator needs bleeding, as the top section will feel a lot cooler than the bottom, or in severe cases the entire radiator will stay cold when the heating system is turned on.

When you bleed a radiator, you release air that has become trapped inside, which improves the efficiency of your home heating system. This means a warmer home and cheaper energy bills.

The good news is, you can do it yourself using our 5 easy steps below;

1. Make sure your heating is switched off as the radiator could be too hot to touch. Hot water could also spray from the radiator if not switched off.

2. Turn the valve at the top of your radiator anti clockwise with your radiator key. You should hear the trapped air release from the radiator. Make sure you have a cloth or towel handy to catch any water that sprays out.

3. Once the trapped air has been released the hissing sound will stop and only liquid will come out. Make sure you re tighten the valve to avoid any more water loss from the radiator

4. Turn your heating back on.

5. Finally check that the radiator is heating up correctly and that heat is evenly spread across the radiator.

Good luck from Team Warmflow!