Bleeding a unvented non-combi boiler rads
- Thread starter James2001
- Start date
1. Get a bleed key
2. Look on YouTube for any videos.
Andy
2. Look on YouTube for any videos.
Andy
What makes you think you need to bleed the rads?
- Joined
- 5 Feb 2026
- Messages
- 2
- Reaction score
- 0
- Country
They have horrendous heat distribution and barely heat up at all
Normally only if the rads are cold at the top do the rads need bled. If the rads are cold in other areas around the bottom then that's usually something else.
As suggested - bleed key and you'll find loads of step by step tutorials online. The rad vent is opened on the rad until only water escapes and you need to know how to top up the boiler pressure to what it should be, as you go along.
As suggested - bleed key and you'll find loads of step by step tutorials online. The rad vent is opened on the rad until only water escapes and you need to know how to top up the boiler pressure to what it should be, as you go along.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
