On Sunday, 5 November 2017 08:24:43 UTC, Brian Gaff wrote:
The reason is efficient heating of the living space. The higher the ceiling
the more space one has to heat. Heat rises so you are heating a lot of the
room before you get any heat lower down.
Brian

Best to put downward blowing ceilings fans in. Or course there is still more volume to heat. Or a more sophisticated internal vent system so recirculate the air.
Simon.