Due to lack of wall space (French doors, fireplace, open plan on three walls) i have a couple of rooms where it would make sense to change from horizontal radiators to vertical, to free up once remaining large wall for sofa. Currently the sofa is pushed close to the radiator, which stifles the heat and also sticks out further into the room.
So a long winded way of asking, has anyone moved from horizontal to vertical and noticed a difference in heat output? A couple of heating engineers have mentioned their concerns.