Minimal Hot Water

[mickeydolenz]

Hopefully someone can help with a problem that I am having with my boiler, my radiators are heating up fine but when I use the shower etc the hot water only lasts a couple of minutes and then goes freezing cold. This after the hot water switch has been on for four to five hours.

Any help is appreciated.

The make is a powermax 155 and I believe they are now owned by Baxi.

 

[twgas]

I think this may be a blending valve problem

 

[mickeydolenz]

Thanks for the reply Mick, would this be something expensive to repair??