I have recently had a Stratford EB12 eco boiler fitted in my living room and a house full of radiators. The heat sink radiator has been installed in my sons box room in an airing cupboard. The room is unbearably hot when the system is on even with the window open. I have requested that the engineers move it to a larger room, hallway or bathroom. They say that due to the system set up this is impossible. I then asked if it could be moved up into the loft above, less than 1.5m. They say this is also impossible. I am at a loss now what to do as this is a really big issue for us. The room heats up really quickly and the temperature is uncomfortable. We've had the door and window open and it's still hot. Son feels sick in the room as it's too hot for him. Are there any solutions I can suggest to the installers or even find a different plumber to help if they refuse? Thanks in advance for any help.