© 2006 GE ECM by Regal-Beloit
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Indoor Blower Motors v0.2
Constant Airflow
Airflow is one of the most important factors in an HVAC system. Proper airflow is
required to maintain capacity, efficiency and comfort.
- Decreased airflow leads to decreased heat transfer, which reduces the
capacity of the system.
- The system now has to run longer to provide the same amount of heating or
cooling to the home. This reduces the efficiency of the system as longer run
time uses more energy.
Incorrect airflow can lead to numerous and expensive repairs.
- Tripping limits cause the electronic controls to cycle more reducing longevity.
- Overheated heat exchanges expand and contract more, often putting more
stress on today’s thinner wall metals.
- Flooding can lead to compressor failure.
- Frozen evaporators can cause water damage to critical electronic controls
including the motor when they thaw.
Continuous airflow (constant fan operation) is being utilized more often with the
increased focus on Indoor Air Quality (IAQ).
This is where the ECM motor excels. Not only does it maintain constant airflow, but it
also uses less energy in doing so. The energy savings is even larger when
continuous fan is utilized.
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