Should you leave the heat on all day?
Is It Better to Leave Your Heat at the Same Temperature All Day or Turn It Down? … "Don't let anyone tell you that your furnace has to work harder to bring the temperature up from a cooler temperature. That's a myth. No matter how cool the house has gotten, it will warm up at the same rate."
What is the most economical setting for central heating?
Most traditional central heating systems are controlled by your boiler. The temperature you set your boiler to is the temperature at which it heats water. So the key here is to set the temperature no higher than you need. For your heating, the ideal temperature setting is around 70°C.