View our step by step guide
How to bleed a radiator
1. Check the top and bottomWhile the heating's on, carefully touch the radiator along its top and bottom to compare the heat. Trapped bubbles of air tend to rise upwards and collect at the top. So if your radiator's cold at the top and warm at the bottom, this could be a sign that it needs bleeding.
2. Get your tools ready before you begin
You should find everything you need for bleeding radiators at a DIY shop. You might have most of it lying around the house already. But before you start, make sure you've got:
- a dry cloth
- a radiator or air key
- a small container to catch excess liquid
- and some protective glasses and gloves.