By Michael Michaud
Recent advancements in motor controls have had huge impacts on the circulator pump market. Specifically, circulator pumps with what are known as Electronically Commutated Motors, or ECMs, trigger an intelligent speed control system that provides substantial energy savings. This is because speed-controlled pumps automatically adjust their output to changing demand, whether it's because of outside temperature, amount of sunlight, overall activity, or other heating sources.
From: Adoption of Electronically Commutated Motor Pumps Increases as Energy Savings Add Up, FacilitiesNet