What does it cost to heat a 3 bed house per hour?

[Salmiak]

We live in a new build, gas central heating. Today is freezing so I've been tapping the extra hour button on our heating system to keep the house nice and cosy. But I'm wondering how much it costs each time i turn the heating on for that additional hour? Our thermostat is set to 18 if that makes a difference.

It will depend on what tariff you are on so no point asking us as we don't know your prices

Friend worked it out as £1/day for them (house rarely above 15 deg C).

Set your thermostat to 19. It makes all the difference. Take a weekly reading and see how much a week costs.

The only person who can work that out is you as it depends on so many factors; size, insulation, tariff, boiler efficiency, temperature, draught proofing, type of house (detached, semi, terrace)

You'll have to work it out from your bills I'm afraid.

You’d have to know how much each kWh hour is and how many units you’d used each hour.

It would cost more in the morning if the heatings off overnight.

I put the heating on half an hour, off for 20 mins, then repeat.