B
BigBurner
richard7186, beware of company spam. Take advice from independent people.
Independent people who don't install or maintain boilers are best of all.
In fact, if you don't take Big Burners advice, the only other person I can think of, who has more experience and knowledge, is the independent bloke down the pub. He'll tell you which car to buy, too.
His mate does. Apparently Honda and Toyota are very good, better than BMW.
Yes you can run the HXi on a sealed system but I still prefer to fit a system boiler, ie the 600 series Vaillant, as the HXi and the Vaillant 400 series are poor quality in comparison.
Yes, sadly the 400 series are of lesser quality. They are based on an old design but brought up to date with the latest Ecotec electronics.
Saying that though does not mean to imply they are no good, just not up to the 600 and 800 series build quality.
You will find that most need the pump set on max to keep them working, as they are very susceptible to locking out if they detect a poor flow through them, which many do for some reason.
I would recommend going for a system boiler ie the 600 series and removing your header tank. All in all the price will be about the same but you will have a better system.
I would have no hesitations recommending a glowworm ultracom boiler. Its based around the original xi, but after a number of years in production, every minor problem has been ironed out. I and a couple of people I know fit these models regular now with no problems. I see nothing wrong with fitting a heat only boiler, but I would also, as most do, strongly recommend a magnaclean fitted.
To be honest, I wouldn't get rid of the ultimate, its a pretty solid boiler, a side from the odd ignition problem. Its not hugely inefficient compared to modern boilers.
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