We advise bleeding your radiators at the beginning of the heating season, before you really need it. Making sure your boiler and heating system is running at its best without any trapped air before you need it.

How do I know if my radiator needs bleeding?

A good way to check if your heating system needs bleeding is to see if your radiators have cold patches at the top but are warm at the bottom. If so, you need to bleed them to let the trapped air escape and the hot water to circulate freely once again.

Should you bleed radiators when hot or cold?

You must not bleed a radiator when the heating is turned on as it may be too hot to touch and hot water could spray out of it. Ensure the heating is turned off before you begin bleeding a radiator. Letting out air when the pump is running will only draw more air into the system from elsewhere.