Can anyone give me a rough idea of heating this?

[ParkerTalbot]

Looking at a large house (by our standards, not necessarily the PH masses!)

It's 4500sqft on mains gas... But... built in 1820 so no cavity insulation or anything like that but does have double glazing. the ceilings are very high though - probably 20ft throughout.

Anyone with anything similar that can give me some sort of very rough ballpark?

[ParkerTalbot]

Thank you, Surrey. Couple of woodburners/open fires (though I expect these cost more than gas) - knowing my wife the whole thing will be heated!

[ParkerTalbot]

Equus said:

Really? On a 4,500ft2 house? That's well over twice a modern storey height (circa 8ft).

Obviously warm air rises, so you're going to heating (and losing heat from) a lot of volume that you'll never feel the benefit from.

Well maybe I've overegged it a bit but the ceilings are over double the door frame heights so certainly felt that way!