Recent content by KH1000

There are 16 radiators in all. I could add another pump but it would have to be close to the existing one, but on the return side - can't get to piping to seperate top floor. Don't want to change system to unvented yet - building extension in the next year or so and splitting in to two flats...

There are 16 rads in all, probably a lot for a single 5 metre head pump?

I tried closing all the other rad valves and the top story rads still didn't get hot.

The top floor of my old three story house does not get any heat in the top story radiators at all. The boiler is on the ground floor and the pump is on the middle floor. I hired a power flush machine and used double the dose of cleaner and, whilst flushing with the boiler running, noticed that...