How To Bleed A Boiler - Butler Heating & Air Conditioning

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How to Bleed a Boiler

Do you randomly hear a bubbling noises when you use your central heating system kicks on? Does it feel as if you are losing heat when the boiler is hard at work? The likely issue is going to be air bubbles in your heat unit. You will need the bleed the boiler before it worsens and you require heating repair or an installation.

Bleeding Because Of Bubbles

Air bubbles in your heat unit are not unusual.  The air could remain from the last time you topped off your boiler. Other causes are leaks or poorly fitted ducts. Whatever the reason, your boiler needs to be bled to ensure the radiator works efficiently and prevents ducts from oxidizing. You will also notice a change of electricity bill once the unit’s maintenance comes to completion.

Bleeding The Boiler

If you attempt to drain the boiler on your own, you require several supplies. You need a radiator bleed-key or screwdriver, a tray to collect liquid, and a towel. You also have steps you must follow for your safety and without damaging your boiler.

1. Set radiator to the maximum heat setting and ensure the boiler begins to circulate water. Leave the boiler at the setting for at least fifteen minutes.
2. Turn off your central heating unit to stop airflow or water from being pumped through the unit. Wait approximately ten minutes to allow the boiler to cool.
3. The radiator closest to the heating boiler needs to be turned off using the valve.  Remember to place the tray and towel, so you are not left with a mess to clean up later.
4. Using a screwdriver or bleed key, turn left until water comes out rather than air.
5. You now need to close the bleed valve.
6. Repeat the process with each radiator.  Once each radiator has all been bled, turn the boiler back on.
7. You then need to check the stats. The water pressure should be between 1.5 to 2 bars.

The process of bleeding your boiler may either be too much for you to handle or perhaps you do not have the time.   We at Butler Heating and Air Conditioning, Springboro, OH, are more than happy to help you maintain a healthy heating system.

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