Hi All, I have a small rental flat which has a 10 year old non condensing boiler which needs replacing. The boiler is for a small two bedroom flat and is a combi boiler which is what the replacement will be. I'm looking at several options but would appreciate some advice on a few issues which have come up. The current boiler is in a cupboard located against a party wall with no easy access to outside from the cupboard. The vertical flue rises about 3 to 4m from the boiler to the pitched roof terminal. Obviously this will need replaced with a flue suitable for condensing boilers. However I've been told the length may cause problems. Also there is an issue with getting the condensate away as there is no nearby outside wall. One option to solve the above problems is moving the boiler into the loft directly above it's current location. This would reduce the flue length substantially but also allow the condensate an exit via the eaves or similar. I assume the condensate would have to be taken back down to ground level via pipework? Are there any issues with having a combi boiler located in the loft? Has anyone any other suggestions as moving the boiler to an outside wall would be very tricky and expensive. Your advice is appreciated.