Abstract: A centrifugal fan arrangement includes a centrifugal fan rotatably mounted within a scroll housing and a plurality of circumferentially spaced fan blades fixed to a central fan axle extending along an axial direction and/or to a circumferential fan ring extending in a plane orthogonal to an axial direction. The scroll housing includes a housing main portion with a maximum housing diameter D and a maximum axial housing width H, a housing inlet portion and a housing outlet portion, said housing main portion surrounding said centrifugal fan at radially outer locations to define a circumferentially extending air guiding space. The housing inlet portion is located at radially inner locations to define an inner air inlet space. The housing outlet portion is located at a radially outer location to define an air outlet space.