God knows how they work. I'm asking for a new boiler that's safe,nothing else. I'm feeling a little discrimination here as all the other flats had new boilers fitted about 6 years ago. The next door neighbour told me on Monday that she'd phoned the HA about a 'smelly' drain outside her flat. Two days later they've just been to clean it. Why can't they sort out my more urgent problem?How can it be repaired when the plumber has condemned it?