If properly designed, a closed-loop hydronic system should rid itself of most air within a few days of initial start-up.

Question

Quizplus · Accepted Answer

A closed-loop hydronic system includes an expansion tank that allows for the expulsion of air as the system is filled with water. The automatic air vent also helps to release any remaining air pockets. If the system is properly designed and installed, it should be able to rid itself of most air within a few days of start-up.

If Properly Designed, a Closed-Loop Hydronic System Should Rid Itself