Whether it is the radiator installed before or just in the heating process of the installation of the new radiator, there will inevitably be some minor problems. 

Let's watch it together. Sound caused by heat sink debris: one is left in the welding slag or block, and then the heating system of impurities in the sand will enter the radiator and precipitation, with water rinse and sound.

1. Because the water flow in the radiator is uneven or debris is cleaned, when the water absorption of the heating radiator and return water is uneven, you will hear the sound.

2. The heating system radiator interface is not smooth, the heating valve is not fully opened, the opening is too small, the bulb makes a squeak, the heated water hits the radiator wall causing noise. 

2. Because of the pressure during the water supply:

The main principle of a radiator for heating is to circulate water, to heat water in the boiler, to pressurize it with a pressure pump and feed it to the upper level, and to continue heating each household heating pipe. 

Connect to. So, water is always flowing. You will hear the sound of running water, but the size of the sound, but the relationship between the water level in the radiator, for less water sound is very large, and it does not require sufficient pressure in the water supply during this process. 

Having a small noise on the radiator heats up the sound of the radiator for a variety of reasons. This is actually a relatively normal phenomenon, but if you're in trouble, you can call an expert.