To bleed a radiator with a key, you need to release trapped air, which will improve its heating efficiency. According to the provided YouTube video, here's how:
Steps to Bleed a Radiator
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Identify Your System:
- Before you start, check if you have a gravity-fed system or a combination boiler.
- If you have a combi boiler, ensure you know how to repressurize it after bleeding. The video highlights that knowing how to repressurize is key if you have a combi boiler.
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Gather Your Supplies:
- You will need a radiator bleed key and a cloth or container.
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Locate the Bleed Valve:
- This is usually found at the top of one end of the radiator. It has a square center.
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Insert the Key:
- Place the radiator key into the square center of the bleed valve.
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Open the Valve:
- Turn the key slowly and anti-clockwise. You should hear a hissing sound as the air is released.
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Wait for Water:
- Keep the key turned until water starts to come out instead of air. Be prepared with the cloth or container to catch the water.
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Close the Valve:
- Once the water starts flowing, close the valve by turning the key clockwise. Do not overtighten the valve.
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Check Your System Pressure (if applicable):
- If you have a combi boiler, you may need to repressurize your system as noted in the reference video. Consult your boiler manual for the correct pressure and procedure.
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Repeat as Necessary:
- Check other radiators for trapped air and repeat the process as needed.
Key Considerations
- Safety: Be cautious as the water might be hot. Wear gloves if necessary.
- System Type: Identify whether you have a combination boiler or a gravity fed system before bleeding the radiator. This is crucial, especially for repressurization after bleeding.
- Repressurization: If you have a combination boiler, learn how to repressurize the system.
By following these steps, you can effectively bleed your radiator and improve your heating system's efficiency.
