What is a ECM blower motor?

How does an ECM blower motor work?

An ECM can be described simply as a basic electric motor, operated by a microprocessor- based motor control. Instead of line voltage being provided directly to the winding (speed taps) to energize the motor (as in PSC and shaded-pole motors), line-voltage power is supplied continuously to the motor control.

What is the difference between an ECM motor and a variable speed motor?

What is the difference between an ECM motor and a variable speed motor? The word “variable speed” refers to the blower motor that is inside your air handler or furnace. It is an ECM (electronically commutated motor). An ECM’s are types of DC motors that function with a built-in inverter and a magnet rotor.

Is an ECM motor worth it?

ECM motors are expected to keep homeowners more comfortable, too. First, they provide more efficient airflow. … Some homeowners may opt for repairing an old furnace, but it can be a costly decision when compared to the energy savings of replacing it with an energy efficient furnace.

IT\'S FUNNING:  How often do you need to recharge your cars AC?

How much does it cost to replace an ECM blower motor?

An HVAC blower motor replacement costs an average of $450 but anywhere from $150 to $2,000 to replace.

HVAC Blower Parts Cost.

Belt $5 – $100
Housing $100 – $300
Capacitor $150 – $450
ECM Motor Module $230 – $830

What is the purpose of ECM motor?

In the simplest terms, an ECM motor lowers the total electrical consumption of an AC or furnace and helps to maintain proper air flow through the system. ECM motors contain a microprocessor, which is the key component of what makes them able to provide higher efficiency.

Are ECM motors noisy?

The wide range of the ECM motor, high efficiency, and programmability gives it a virtually unlimited range of performance characteristics. … Also, since the motors run on high speed all the time, the noise levels are also high.

Is an ECM blower motor a variable speed?

The term “Variable Speed” actually refers to the blower motor inside the furnace or air handler. It’s an Electronically commutated motor, or (ECM). … The initial cost of a furnace with an ECM will be higher than a traditional furnace, but the typical payback on a variable speed furnace is just 4 to 5 years.

Is a variable speed blower worth it?

The best news … a variable speed furnace motor is 80–85% more efficient than a standard furnace motor. … If you don’t have a 90% efficiency or higher furnace in your home, then yes it may well be worth the cost to upgrade.

Why do ECM blower motors fail?

Some older ECM motors will overheat and even fail when constantly running in over-amped conditions. Newer models are designed to drop airflow but time will tell on how well they will hold up. Other consequences of high static installations include noise at the registers from higher air velocities.

IT\'S FUNNING:  What happens when you overload a motor?

What are the two motors on a furnace?

There are two different types of blower motors for your forced air system, the PSC (permanent split capacitor) and ECM (electronically commutated motor). PSC motors were the old standard, and if your furnace is over 5 years old it probably has one.

Which is better ECM or PSC motor?

PSC motor (permanent split capacitor) – Runs at a constant speed. ECM motor (electronically commuted motor) – Runs at a variable speed. This provides several benefits, including energy savings, lower need for maintenance, improved comfort and better airflow and indoor air quality.