Expansion tanks help keep the pressure under control in a closed-loop hydronic system, but where is the best spot to locate that tank and how large does it need to be? And does the equation change with modern low-temperature hydronic heating system designs?

Hydronics expert John Siegenthaler will answer these questions and more in this edition of HPAC Magazine's 30 Mechanical Minutes, virtual content for real-time professionals. There will be time for Q&A so bring your own questions as well.