You can check for 'cold spots' on your radiators. If they are cold at the bottom and hot at the top you may have a build-up of debris. This is when you need a Power Flush to
prevent blockages in radiators and pipework. For newer boilers, if the system is not well maintained this can invalidate the manufacturer's warranty.
When traditional, heat-only boilers or those with old pipework take longer to heat up, this can be a sign of dirt and debris building up. Also, heating systems with microbore
pipework can become blocked quicker with only a small amount of debris. In all these instances, a Power Flush is recommended and will inevitably rectify the problems.