Variable speed pumps have been around for years. As I mentioned in last month’s article, I used the technology at my own home at the turn of the century. A control varied the speed of a pump in an ...

As the cost of components and pumps becomes more affordable, variable speed pumps are being used to increase the efficiency and reliability of water distribution systems in multi-story buildings.

There’s a debate among commercial and industrial hydronic system designers: how best to refine and enhance pumping and system efficiency to precisely match output to load (need). Decades ago, ...