Maxflush Limited

How to bleed a radiator?

Take care first, make sure the heating system is off and, ideally, allowed to cool. Next you need to identify the bleed points on the radiators and ensure they are accessible. Using a bleed key and a piece of kitchen roll, slowly open the bleed screw with the tissue underneath and you should hear the air being forced out past the bleed screw. Keep the tissue there until the air stops and liquid starts to dribble out of the point. You have now bleed that radiator. Do the same to all radiators and then check the system pressure as you may need to top back up.

What's the average cost of a powerflush?

The cost of a powerflush will vary greatly depending upon where you are in the UK. In the south west, we usually look at around £400 for a standard powerflush of 7/8 radiators, but each system will be different and a detailed assessment will need to be carried out every time. We will also look at system future proofing with filters/deaerators, chemical protectors and water testing.

Why is my radiator cold?

There could be many reasons for a cold radiator. Could the valves be turned off? Is the room already at a required temperature? TRV’s will shut down if the room is already warm. Is it just cold at the top/bottom? Could be a build up of air in the top (will require bleeding/venting) or an accumulation of debris at the bottom (will probably require a powerflush or system clean).