Bleeding a radiator with the heating on is not recommended and can be dangerous. Here's why:
Risks of Bleeding a Radiator with the Heating On:
- Scalding: The hot water inside the radiator can be extremely hot, potentially causing severe burns if it splashes out during bleeding.
- System Pressure Issues: Bleeding a radiator with the heating on can cause a sudden drop in system pressure, potentially leading to airlocks or other problems.
- Damage to the Radiator: The sudden pressure change can damage the radiator's internal components, potentially causing leaks or malfunctions.
Best Practices for Bleeding a Radiator:
- Turn off the heating system: Before bleeding a radiator, always turn off the boiler and allow the system to cool down completely.
- Locate the bleed valve: The bleed valve is usually located at the top of the radiator.
- Use a radiator key: Insert a radiator key into the bleed valve and turn it counter-clockwise to release the air.
- Listen for the hiss: As the air escapes, you will hear a hissing sound.
- Close the valve: Once water starts to flow out, close the bleed valve.
Always prioritize safety when working with heating systems. If you are unsure about any aspect of bleeding a radiator, consult a qualified plumber.
