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.

Related Work

American Museum of Natural History - New York, NY
Custom fabricated 30" high velocity air eliminator installed to solve noise problems in the existing system.
International ALERT Academy, Big Sandy, TX

“I have not had to vent a coil in the three months since

Penn State University - State College, PA
Penn State is one of our largest university customers with more than 90 units installed across campus.
Mosinee School District - Mosinee, WI
“We couldn’t get the chilled water supply temperatu