Why do blower motors fail?

Like other components in your HVAC system, the blower motor can wear down over time. Some of the reasons a blower motor might fail are overheating, and excessive moisture. … Blower motors that are clogged with debris, or that become saturated with moisture can fail due to overworking or electrical shorts.

What causes a blower motor to go bad?

Weak Airflow from the Vents

There are a number of possible reasons why this is happening, including dirt and dust buildup, bad capacitor, and an aging motor. If your blower motor is dirty or has a bad capacitor, you can call in an HVAC technician to fix the problem.

How long do blower motors last?

The average lifespan of an HVAC blower motor is between 12 and 15 years. Fortunately, your HVAC blower motor doesn’t need much maintenance to survive this long.

What are the signs of a bad blower motor?

Here are just a few of the signs that your blower motor is going bad.

  • Weak airflow. This is one of the first signs of a bad blower motor that people tend to notice. …
  • Noises. Have you noticed any unusual noises coming from your vehicle’s HVAC system? …
  • Smoke or smells.
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How do I know if my blower motor needs to be replaced?

1. Weak airflow from the vents. One of the first symptoms of a potential problem with the vehicle’s heater blower motor is low airflow from the vents. If when the air or heat is turned on the vents blower noticeably less, or weaker air, that may be a sign that the heater blower motor is starting to wear out.

What happens when blower motor relay goes bad?

If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

How much does it cost to replace a blower motor?

Cost to Replace Central or Forced Air Blower Motor

Replacing a blower motor costs $450 on average with a typical range of $250 to $800. With a warranty, you might pay as little as $150 for labor alone. For high-end models, like those with large motors or access issues, you might pay as much as $2,000.

How often should you replace a blower motor?

Blower motors that are clogged with debris, or that become saturated with moisture can fail due to overworking or electrical shorts. Something to consider when replacing the blower motor in your HVAC system is how often you are paying for repairs. Most residential furnaces should last between fifteen and twenty years.

How long does it take to replace blower motor in car?

This is around a 4 hour job by an experienced Tech. At home, by a Novice with decent skills, about 5 hours plus!

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How often do blower motors go out?

Even though the manufacturer states their blower motor will last two decades, we advise all clients to expect a 10-20-year life span due to age, use, and proactive maintenance.

What does a bad blower motor sound like?

You might hear this as a noise coming from directly behind the vent, perhaps a light slapping, or a sudden pop before you notice a problem with airflow. Whirring noises might also result from a bad bearing in the motor. … This is a telltale sign of a bad blower motor.

Can you drive with a bad blower motor?

If your blower motor stops working or even short circuits, you will have no airflow produced for the system. … Additionally, a bad blower motor can also disable a completely operational A/C and heating system. Of course, you will not want to drive your car in extreme heat or cold from outside.

Can a blower motor be repaired?

Blower Motor Replacement: When Good Parts Go Bad. … There are a number of things that can go wrong with your heating system, but if the air stops blowing altogether and the same is true on cold air settings, a blower motor replacement is likely in order. The good news is that it’s a fairly straight forward repair.

How much does it cost to fix an AC blower motor?

A typical HVAC blower motor replacement will cost an average of about $450- with a general range that’s between $250 and $800. With a solid warranty on the HVAC blower motor, you may only have to pay about $150 for the labor.

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Can a blower motor get weak?

Weak airflow is a sign of blower motor failure. This part wears out eventually, meaning its fans can no longer push adequate amount of air out the vents or through window defrosters. In other situations, air may not blow out on some speed settings at all. Ask your mechanic to check it out.

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