Install the Spirovent® at the point of lowest solubility, which is the place in the system where the temperature is the highest and pressure the lowest. Note as well to always "pump away" from the expansion tank, never towards it.

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Custom fabricated 24" high velocity combination air eliminator / dirt separator for the hot water system and custom fabricated 30" high velocity air / dirt for chilled water.
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Industrial Gallery
Spirovents have been installed in many new and existing industrial HVAC systems.
Residential Gallery
Spirovent® remains the world class standard that others attempt to reach. Often copied but never equaled.