Retrofit Variable Speed Furnace Motor

And while not all contractors consistently offer ecms those who do often report increased profits as well as improved customer comfort and satisfaction.

Retrofit variable speed furnace motor.

The problem is the furnace control module doesn t use a separate speed when the unit is running in continuous fan mode. The higher the seer the lower your utility bills. Variable speed furnaces are able to run at a range of speeds rather than one speed as traditional furnaces do. When the r g circuit is made the blower motor operates on heating speed.

Throughout operation the furnace monitors incoming data from your hvac system to automatically make blower motor speed adjustments. During the cooling mode variable speed systems typically result in an efficiency gain of about 1 seer seasonal energy efficiency ratio. The differing speeds control heating and cooling airflow through the home. Should be if circ is on lowest speed there is no way to retrofit an existing furnace with an variable speed ecm.

More efficient motors are available evergreen for retrofits but they pretty much function like standard multi speed psc motors. According to the manufacturer s documentation your furnace should have a 3 or 4 speed blower motor. Compared to a conventional single speed furnace a variable speed furnace performs better and uses about two thirds less electricity. But over the years several manufacturers have developed variable speed electronically commutated motors ecms specifically designed as retrofit replacements for faulty psc motors.