How to Bleed a Radiator
Save money and improve heating performance in 7 steps
If you’ve heard some odd sounds coming from your radiators lately, especially when they’re starting to heat up, or have noticed that the radiator is cooler in specific places, often nearer the top, there’s a good chance that they’re in need of bleeding.
Radiator bleeding is the process of letting any trapped air escape from your home’s heating system, which will increase heating performance, get rid of those rattling sounds, and ultimately save you money on your heating bill in the long run.
Why do I need to bleed a radiator?
Your heating system is a vital part of your home, providing warmth and comfort all-year round. It’s almost constantly in use, providing hot water to your home on-demand and generating heat from the radiator network spread throughout. It’s not uncommon for air to find its way into a system over time, gradually reducing heating performance and creating some unwanted rattling sounds as it travels through your system.
While this typically affects unvented systems more frequently, it can - and will - happen to every home heating system at some point. By not bleeding your radiators, you will lose heating performance in places where air is trapped, meaning you’ll have to leave the heating running for longer periods of time to warm your home to your liking. We recommend regularly checking your radiators and bleeding them as necessary. If you have to repeatedly bleed radiators then discuss this with your installer when the boiler is serviced as there may be an underlying problem.
When should I bleed my radiators?
Why should I bleed my radiators?
On which position should my radiator thermostat be during bleeding?
How long does it take to bleed a radiator?
Can wrong bleeding result in serious damage?
My radiators are still not heating up properly - what should I do now?
Is your heating system still not working properly?
Contact an installer if your heating system keeps showing problems.