Radiator and system bleeding after boiler maintenance

After draining, repairs, or refilling, air may remain in the circuit. Air reduces efficiency and causes noise.

Symptoms of air

A radiator that is cold at the top, water sounds, and intermittent circulation are common signs.

Radiator bleeding

Bleeding should be performed carefully until the air stops and a steady stream of water appears.

Pressure check

After bleeding, the system pressure should be checked, as it may have decreased.

Automatic air vents

These must be functional and show no signs of leakage.

Recurring air

If the problem returns frequently, there may be a leak, incorrect pressure, or another issue in the circuit that requires professional inspection.