if your daughter gets any kind of benefit, that includes Tax credit, child tax credit etc she can apply to the government scheme called warm front to get a free new boiler. We did this and got central heating put in, because we just had electric heaters and it was all free.
Lots of good quality boilers available. I would get hold of a good, recommended boiler installer first. Then go on his recommendation, since he'll have experience of them.
Hongkongphooey... No, she not on any kind of benefit. She's a very hard working girl who struggles for money. Both her washing machine and boiler have broken down, the boiler must take presidence.
The Builder - thanks for your advice, we'll do just that.