I thinking of replacing my old boiler with a condensing combi probally a baxi potterton as they seem to well regarded. The current boiler is floor mounted in the utility room so would probally put it in the same location unless otherwise advised.The only other place it could be fitted would be in the airing cupboard upstair where the copper tank lives at the moment. The house is a large 3 bed semi with 9 large old double radiators, these will be replaced one by one as I redecorate with more efficient modern rads. I'm also considering fitting underfloor heating to the kitchen and bathroom. The kitchen rad would either be down sized or removed and the bathroom rad would be replaced with towel rad. The only other consideration would be the thermostatic shower. Now you have the info which model would you recommend and are there any pitfalls to look out for.