Retrofit Variable Speed Furnace Motor

Is it louder when heating cooling.

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. When the r g circuit is made the blower motor operates on heating speed. Compared to a conventional single speed furnace a variable speed furnace performs better and uses about two thirds less electricity. 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. Throughout operation the furnace monitors incoming data from your hvac system to automatically make blower motor speed adjustments. Variable speed furnaces are able to run at a range of speeds rather than one speed as traditional furnaces do. But over the years several manufacturers have developed variable speed electronically commutated motors ecms specifically designed as retrofit replacements for faulty psc motors.

The higher the seer the lower your utility bills. Should be if circ is on lowest speed there is no way to retrofit an existing furnace with an variable speed ecm. In recent years new furnaces with bpm motors have gained market share. During the cooling mode variable speed systems typically result in an efficiency gain of about 1 seer seasonal energy efficiency ratio.