The heating in our house is normal during the day and cold at night until seven or eight in the morning. Water is hot, but it is cold if it is not waterproof. Live on the second floor.

1, ask the neighbors to see if there is such a situation. If there are both, it is the problem of the heating company. If you don't find someone else, find him. The biggest possibility is the water pressure he gave, and the water temperature is unstable, resulting in poor circulation.

2. If there is nothing wrong with the neighbors, it is basically the problem of heating at home. There are generally two situations: first, the heating entrance or circuit of your home is not smooth; And the radiator of your heating is not adjusted properly.

3. If a lot of gas is released every time you drain water, it is because your heater contains a lot of gas, and it is not easy for your heater to exhaust, which leads to the circulation being blocked.

I was tortured, too.