Why is the heating in the building hot during the day and not hot at night?

There are two situations that cause this phenomenon:

1. When there are many people working in the building during the day, the property will increase the supply of heating, and fewer people will work at night. Therefore, in order to reduce costs, the property reduced the supply of heating. Because some buildings are heated by central air conditioning, this heating is to save costs.

2. Residential building. If it is a building where residents live, the heating department is generally responsible for heating. In this case, heating at night will not be reduced, because most residents are at home at night, and the heating department will not reduce heating, on the contrary, it may increase heating for residential buildings. But the reason why I feel that the temperature is falling instead of rising is because your room is not well sealed. At night, the outdoor temperature drops obviously, and the heat loss in a poorly sealed room will increase obviously. So you will feel that the room temperature has dropped.

These are two main situations. I hope I can help you!