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Furnace Blower Motor Repair: What You Need to Know?

Dec 3

If you're like most people, the last thing on your mind when your furnace blower motor stops working is what's inside of it. If it's not spinning, there's no way it can keep your house comfortable during the cold months. When you experience issues, it's best to bring in the experts for a quality heating repair service in Sandpoint, ID.

The squealing noise coming from under your furnace could mean there is black dust blowing out the side vents. All that dusty exhaust only signals one thing—time for a new furnace blower check.

But before you do that, here are five things you should know about furnace blower motors and how to diagnose them.

What Causes Furnace Blower Motors to Fail?

Furnace blower motors are almost always driven by alternating current (AC), which means they are powered by electricity. This makes them significantly more prone to wear and tear than their DC counterparts used in things like water pumps or lawnmowers. You can find out if your furnace has an AC blower by looking at the buttons on the front face of the unit. If there are buttons for heat, cool, and fan, then you've got an AC motor.

Most Furnace Blower Motors Are Not Interchangeable—If They Break, Replace Them!

Furnace blower motor repair is a specialty job. That's why you shouldn't even think about trying this project on your own. Whatever model you have at home, if you try to take apart the blower assembly and it doesn't go back together correctly, then there's no way that machine can work properly ever again. The solution? Just buy a new one or let the pros do heating repair service in Sandpoint, ID for you!

There Are Two Kinds of Furnace Fan Motors: Permanent Split Capacitor (PSC) and Single Induction Motor (SPI)

A blower motor is a type of induction motor. This means it works using alternating current and forces magnetic fields to rotate. An induction motor is different from a universal or "series" motor in that the second kind only produces torque at certain speeds (revolutions per minute). If you are unsure which fan motor you use and need a quick fix after it fails, call the experts for a heating repair service in Sandpoint, ID.

Furnace Blower Motors Fail Because of Heat Buildup

Furnace blower motors fail because they overheat—usually after running for three to six years, depending on the machine's efficiency level. The life of your furnace blower may depend on the quality of its installation—overusing it will lead to failure sooner than necessary. The key is not to run it more than half an hour before turning the temperature down again, especially during the days that you don't need heating anyway!

It Can Be Helpful to Swap Out Your Furnace Blower Motor With a Brand New One At Least Once Every 5 to 10 Years

Even if your furnace blower motor is working well now, it's still a good idea to plan for its eventual replacement. Think of it like flossing—no matter how good you are at brushing, there's no way you can prevent dental problems if you never floss. The same rule applies to your heating unit. If you want to enjoy years of reliable service down the road, then replacing your current blower every once in a while isn't such a bad idea!

Having Problems With Your Home Heating System?


These are just some basic things about furnace blower motors that everyone should know before calling the experts for heating repair service in Sandpoint, ID. If you're interested in saving money on this home project, you should speak with reputable furnace experts first.

You can call Bill's Heating & A/C for assistance or service for your heating system. Dial 208-777-5528 now.