During a powerflush, a powerful pump unit is connected directly to your central heating system. … Once connected, this pump will flush a powerful blend of chemicals through the pipework. These will remove the sludge and rust in the system, destroy limescale and prevent rust from reoccurring in the future.

Does power flush really work?

Power flushing removes a large percentage of sludge / rust, but not all of it. It is not possible to remove all the sludge from a system especially older systems. Power flushing has limits and on really badly sludged systems it will not work.

Is a power flush messy?

A power flush is really messy. This equipment does not use much pressure and should not cause any leaks or mess, as long as the sludge or rust is not hiding any leaks in the system. So if the system is healthy, this process should cause little or no mess at all.