Ours has been on constantly since Christmas eve but normally it's just between 6:00 and 7:30 and then 17:00 and 22:00. I've got a few days off this week (one day back at work yesterday was enough... truthfully we've got builders 'doing' our roof so need to be here if only to keep dogs quiet) so the heating's on but low. I'll light the fire this afternoon and probably curl up with a dvd but this morning I'm twiddling.