https://wetheadmedia.com/my-boiler-is-making-a-banging-noise/ Plumbing, Heating and Pool Repair Guides Sat, 15 Oct 2011 17:31:29 +0000 hourly 1 https://wordpress.org/?v=6.0.11 https://wetheadmedia.com/my-boiler-is-making-a-banging-noise/comment-page-1/#comment-20778 Sat, 15 Oct 2011 17:31:29 +0000 https://wetheadmedia.com/?p=9421#comment-20778 how can the water inside a sealed pressurized hot water heating system evaporate especially when every heating loop is required to have a fresh water make up pressure reducing valve and either a low water cut off or flow switch for safety

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