Caleffi announces the release ofidronics Number 7 - Mixing in Hydronic Systems, its semi-annual design journal for hydronic and solar professionals. Mixing products have advanced into more intelligent and durable devices. A solid understanding of how they function and how to apply them will enable maximum heating system performance. This issue of idronics discusses a wide range of mixing options for use in both standard and specialized applications. Visitwww.caleffi.us, to download this latest issue or register to receive a complimentary copy by mail.