Understanding the Difference: Constant Torque vs. Constant CFM ECM Blower Motors
For modern HVAC technicians, the evolution of blower motor technology has been nothing short of revolutionary. We have moved far beyond the days of simple, single-speed PSC motors, entering an era of sophisticated Electrically Commutated Motors (ECM). Within this category, however, there is often confusion regarding the specific performance capabilities of Constant Torque versus Constant CFM...
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