Hi, I've had problems with a powermax 185. I've had it regularly serviced but since the last service the volume of hot water has seriously diminished. I brought the service chap in again and he tells me that the blender valve may need replacing at a cost of £90+ and a fan may need replacing at a cost of £150+ because the boiler is noisy when it kicks into action. I'm a bit sceptical because he told my neighbour the same thing 6 months previously. If your house is 'New' as in new build then it is still under warranty and you can get the builder to come out to it. The best thing you can do is to educate yourself on your heating system. Try this website, http://www.miketheboilerman.com/powermax.htm
I learnt a lot from this guy - not enough to fix my boiler but enough to know not all service chaps are on the straight and narrow. I've joined a care plan.
Jan
April 2008