Matthew has transformed my central heating system which has micro bore pipes to all radiators. One large radiator which had completely stopped working some years ago is now as hot as all the other radiators. I now have an even heat right through the house and it is not only more effective it is much quieter too. The boiler seems to be on a lot less. I would unreservedly recommend anyone considering having the central heating power flushed to go to HH Power Flush. Matthew was efficient, polite, made no mess and did not try to sell me anything I did not need.