There are a number of symptoms you can look for to see whether a power flush would be beneficial for your heating system. The first area to check is your radiators. If they are cold when your heating is on, or have cold spots, then you may have a blockage. You can also test by bleeding your radiator and checking whether the liquid is dirty inside. If your boiler regularly cuts out, or bangs continuously, this is again a sign that your system may need a power flush.
