How to Remove an Airlock from Your Hot Water System

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Ever switched off and drained your hot water system to fix a leak, only to turn on your water and find no hot water?

Method 1
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    If the cold water runs OK, but the hot water doesn't, or runs slowly then trickles off, then you may have an airlock, which is when air in the pipes isn't being moved by the hot water, thereby blocking the pipe.
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Method 2
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    the end that is not connected to the hot water connection of the washing machine
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  • Question
    How do I fix an airlock in a hydronic heater that is connected to a hydronic water system in a condo community?
    Community Answer
    Within your distribution piping, normally at the heater a small tank is mounted on top of the piping, or there may be a small spring-loaded valve. The tank fills with water and presses against a rubber bladder pressurized with air, which fills and empties in response to system pressure. The bladder breaks or leaks and no longer maintains system pressure and needs to be replaced. The spring-loaded valve works in opening and releasing high pressure and air during extreme system pressure. This valve can be manually released (warning: hot temperatures!) to bleed off pressure/air. This valve fails when the spring breaks or gets soft and must be replaced.
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  • Question
    How do I remove an airlock in my hot water system?
    Community Answer
    You remove the airlock from your hot water system by flooding it, and then it becomes a waterlock system.
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  • Question
    What do I do if the hot water doesn't work consistently?
    Community Answer
    Call a plumber. If that doesn't work, mix boled water with water from the cold tap to take a bath.
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      • Similar techniques can be followed by using a mixer shower: Block the water from coming out of the shower head, with say a thin plastic bag placed over the pipe
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      • Check that your airlock is fixed, after all this.
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      Things You'll Need

      • Piece of hose
      • Duct tape
      • Qualified plumber!!

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