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.
Can a furnace blower motor get weak?
If the airflow coming out of the vents is weak, it can mean that your blower motor is having a hard time pushing enough air through the ducts to achieve your desired temperature. … It’s important to note that weak airflow can also result from dirty or leaky ducts or a clogged filter.
How do I know if my HVAC blower motor is bad?
Signs of an Overheating Blower Motor
- A “hot” or burning smell from vents in the home. This symptom is often coupled with the furnace shutting off completely. …
- Loud humming and other unusual noises. We have many homeowners call us mentioning humming and other odd sounds. …
- Furnace cycles off and refuses to restart.
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 much does it cost to replace furnace blower motor?
How much does a furnace motor replacement cost? On average nationwide, a furnace blower motor replacement costs $400-$600, including parts and labor. A single-speed blower motor costs around $450 to replace while a variable-speed motor costs $600+.
How do you test a blower motor?
How to Test a Blower Motor
- Use voltmeter or ohmmeter to check for a blown fuse. If you find one, replace it.
- Start car and see if blower motor works. …
- If the circuits are in good repair but the blower motor keeps blowing fuses, replace the blower motor [source: You Fix Cars].