Are ECM Water Pumps Worth It?

The AEA has offered rebates for several years on pumps that use electronically commutated motors—or ECMs for short. Like many newer energy-saving technologies, these pumps have taken a while to catch on, but more and more northerners are discovering their benefits. ECM-based pumps use small computers, permanent magnets (instead of electromagnets) and low-voltage DC power … Read more