If you have a radiator that feels hot at the bottom and cold at the top then you need to bleed your radiator. Bleeding your radiator is a very simple DIY task, but you will need a radiator key.
Once you have allowed the air to escape from your radiator the water will rise to the top of your radiator making the radiator energy-efficient and consistently hot all over.
Why Does Air Fill A Radiator
Over time air will begin to replace the water in your heating system, which in turn replaces water with air. If your radiators need bleeding on the ground level then they will also need bleeding on all floors.
- The system has been turned off over winter
- New radiators always need bleeding
- Old system or insufficient/older boiler
- Your system might be leaking
Bleeding Radiators 101
When you bleed your system and replace the air with water you will need to top-up the system from the water-mains. After each level of the house has been bled you must return to the boiler to turn on the overflow until the system pressure is stable for the boiler to kick-in.
If after bleeding you radiator it fills with air again and you cannot get the pressure back-up then your system leaks and you “MUST” call a plumber to investigate the system.
Do not do this if you do not have the correct tickets because a lot can go wrong and you will not be covered by your house insurance.
Conclusion – Hot and Cold Radiators
Bleeding your heating system is a DIY task most homeowners should accomplish. You should be bleeding your system each year so you get the maximum heat from your radiators.
Happy Heating 😉