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Regular air block

Hi Team, I have an air block on the hot water system which is getting to be a more regular problem, I can feedback the cold water supply to remedy the fault but this only lasts a few days. Is there anything else I can do to permanently sort the problem?

2 Answers from MyBuilder Plumbers


I would suggest checking the part 2 ball float in the cold water storage tank, Air locks shouldn't be a common thing unless there are issues with the system.

Check the ball float and water level of the tank, usually about 3/4 full.


Answered 23rd Feb 2017

Is there more than one bathroom in your property?? Do you have a cylinder for your hot water?? If that is the case you may need a Surrey flange installed on the cylinder. In a nutshell what is happening is the hot water level is dropping to much in the cylinder causing the airlock. Have you managed to get it sorted yet?? If not please let me know what system you have and I can try and be more helpful.


Answered 27th Feb 2017

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