Im looking at replacing my old Sime Friendly boiler with a Worcester bosch greenstar 37cdi in the next month or so. Would this be a decent boiler to change too as ive had nothing but problems with the Sime? I have a 3bed semi right now but were looking to extending it to 4/5 bed in the next year or two so would want the boiler to be able to cope with the extra rooms. Ive looked on the WB website and i have a few installers near me that im going to get out to quote for me but I just wanted a bit of an idea of what boiler to go for. The main thing is the amount of hot water it can produce as the Sime is useless, you cant even get a decent hot bath in the winter. The website does not show prices for the boiler, what would i be looking at for this type of boiler?Im expecting around a grand for installing it or is that a bit on the low side?