I like the ease in which even the heat exchangers can be changed. They
virtually clip in and out, so no ditching the boiler if the heat echanger
fails.[/quote]

Yes me too. Also the pcb is in a plastic module, you just undo one big screw and the whole thing pulls off. No taking pictures of all the edge connectors with your digital camera necessary.

The 28kw combi has a small amount of storage; the practical DHW performance is the best I have come across from a 28kw combi. Of course it's only a shaddow of the 40kw Worcester condensing combi, but it's a close second, though maybe ahead in the repair situation.

One gripe, I had to buy sensetive equipment (Kane 400) just to comission this boiler properly. That bugged me, but that's the future, we'll be required to set up gas and air ratios by quite a few more manufacturers in the days ahead.