Whether designing a residential or commercial system, there are several lessons to be learned from Siegenthaler, a.k.a. “Siggy,” including thermal considerations, piping, heat pump technologies, panel radiators, slab heating, controls and ECM circulators in order to provide the ultimate goals: Comfort, high efficiency and a happy customer.

The Spirocombi Magnet is a high-efficiency, coalescing-type combination air eliminator and dirt separator for use in hydronic systems.

A contractor friend decided to take on a part-time job teaching at a local technical school. He had never done this before.

Easy for contractors, safe for those who use it, Zurn explains.

Before I retired from speaking in 2016, I spent decades giving talks about heating systems across the U.S., Canada, Europe and even in the Caribbean. Several times, I even did steam-heating seminars in Hawaii. Life’s funny that way.

When a contractor orders something from you, do you say, “Excellent!” or “Great choice!”?

Avoid lightweight concrete for heated slabs.