To work correctly, a closed hydronic system must be free of air. Air bubbles take up the space that would be occupied by water, thus reducing the overall efficiency of the heating system. Air eliminators, as the name states, get rid of unwanted air in a closed hydronic system. Our collection of air eliminators includes air separators, Microbubble Resorbers , and Air Scoops. All are available up to 1-1/2” inch system connection size.