Noise in the system - There is air trapped in the heating system

What does System noise (air) mean?

Audible noise, such as gurgling or bubbling, is present in the heating system pipes, indicating the presence of air pockets.

• Air introduced into the system during initial filling or maintenance.
• Incomplete venting of the system after draining or refilling.
• Small leaks in the system drawing in air.

Click steps to track your progress.

1. 1

   Locate and open air vents on radiators and other high points in the system to release trapped air.

2. 2

   Ensure the system pressure is adequate after venting, topping up water if necessary.

3. 3

   Let the pump run; it is designed to be self-venting through the system over a period of time.

4. 4

   Consider using the Grundfos GO Remote app's 'Pump venting' function if noise persists after manual venting.