Air vents should be mounted at any point in a piping system where an air bubble could form. An air separator is an in-line device that removes entrained air (microbubbles) that is moving with the flow of the fluid; they are different products for different purposes and you can't really compare efficiency between the two. All hydronic systems should have air vents (wherever needed) and an air separator.
Air vents should be mounted at any point in a piping system where an air bubble could form. An air separator is an in-line device that removes entrained air (microbubbles) that is moving with the flow of the fluid; they are different products for different purposes and you can't really compare efficiency between the two. All hydronic systems should have air vents (wherever needed) and an air separator.