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air in water lines

  1. Air continuously in hydronic two-zone system

    HVAC
    Hello all. First time home-owner here and my first experience with hydronic heat. I'm have issues with air getting in my system and subsequent knocking/tapping, etc. This issue is made worse when closing off the lower level via the zone valve. Some background on the system: 1. Both circulators...
  2. Air in water supply lines

    Plumbing
    I had a leak under the kitchen sink and had a plumber replace all the lines and shut off valves - hot, cold water, ice maker and dishwasher. He also replaces the lines with PVC. Everything was fine for about 5 days, but now everytime I turn on any faucet or the shower there is a small amount of...
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