Its not cool to come across as a tight git you knowThe heating is set to 19.5 in our house and it comes on whenever it needs to. It has certainly been on the past few mornings and evenings. I would much prefer to be comfortable and pay a few quid a day.
I pay around £100 a month for electricity and gas, so around £3.30 a day. This is split 70% gas, 30% electricity = £2.30 of gas a day on average (obviously more in winter, minimal in summer with water and cooker heating). Well worth it IMO.