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Lennox: Constant Torque Furnaces

Both the EL195E (95 percent AFUE) and ML180E (80 percent AFUE) furnaces feature Power SaverSM constant torque motor technology. Using five discrete programmable taps to determine the optimal operating speed allows both furnaces to maintain a programmed level of airflow over a wide range of external static pressure, even under less-than-optimum duct configurations and other conditions that produce high or varying static pressure. When applied as a complete system, the furnaces can increase overall cooling efficiency by as much as one or more SEER points, says the company. Depending on the application, this can equate to several hundred dollars in energy savings per year, promoting environmental sustainability, according to the manufacturer.


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