Let me ask you a question. The hot water temperature in several rooms connected by a hot water pipe in my house is very low. What is the reason? The hotel uses air energy to supply water.

Because the temperature of hot water from other hot water pipes to the room is normal, this pipe itself is abnormal, resulting in too slow hot water flow rate, too small flow rate, poor insulation in hidden parts of the building, uneven distribution between hot water pipes and so on.

It is suggested to check and confirm that the hot water flow and velocity in the hot water pipe are normal first. You can try to turn on the hot water taps in several rooms supplied by this hot water pipe and see if the temperature of the hot water outlet can rise in a few minutes.

If the temperature of hot water outlet can rise after a few minutes, it is caused by poor insulation in the middle of this hot water pipe or excessive pipe diameter; If the temperature of hot water still does not rise, it means that the flow rate and velocity of hot water are too small. Check whether key node components such as water filters and valves on the pipeline are opened normally.

If you can't handle it yourself, find a professional maintenance person to check and repair it.