When you want the most comfort and energy efficiency from your heating and cooling system, look for one that has an electronically commutated motor (ECM) in the blower or outdoor condenser. These motors offer many advantages over permanent split capacitor (PSC) motors, the most common kind used for HVAC equipment.
ECMs offer these benefits over PSC motors:
- An ECM uses up to 80 percent less electricity than a PSC motor, which lowers heating and cooling costs. Air conditioners or heat pumps with an ECM in the outdoor condenser, as well as the indoor blower, use substantially less energy than PSC motors. In fact, central cooling systems with ECMs have higher SEER (seasonal energy efficiency ratio) ratings than systems with a PSC.
- Blowers with ECMs inside them run more quietly. The electronically commutated motor does not use brushes, which lowers the amount of noise it creates. Some blowers start and stop slowly, which lowers the noise load even more.
- Some HVAC systems have sensors that vary the motor’s speed depending on the conditioning needs. In the summer, an ECM in the blower removes more humidity since its operating speed is slower than a PSC. Removing the humidity helps the air feel cooler, and you may be able to raise the thermostat’s settings without sacrificing comfort.
- The longer running time also traps more airborne particles in the filter, giving you better indoor air quality.
- ECMs don’t create as much heat when they run as a standard PSC motor does, which helps lower your home’s need for cooling.
- The ECM requires less maintenance and it has a longer lifespan than a PSC motor.
These motors can be placed inside existing equipment or if your HVAC system is older than 10 years, replacing it with equipment that has an ECM inside will lower your heating and cooling bills and increase your comfort.
If you’d like to learn more about an electronically commutated motor and your HVAC system, contact Team Bob’s Heating Cooling Plumbing. We’ve provided HVAC services for Grand Traverse and the surrounding counties for more than 30 years.
Our goal is to help educate our customers in Traverse City, Michigan and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about Electronically Commutated Motors and other HVAC topics, download our free Home Comfort Resource guide.
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