If you hear small shocks in your heating system, it's because there is air. To remove this air, it is essential to purge the radiators. But, especially if your time is limited, it is not necessarily necessary to do all to purge your heating system in its entirety.
Indeed, as the air always tends to rise, do not tire yourself and simply bleed the radiator that is at the highest point in your home.
For technical details, please refer to our sheet
Bleed a radiator
.Suggest a tip for this theme