• Home
  • How do I know if my furnace blower motor is bad?

How do I know if my furnace blower motor is bad?

Author of the blog (work in a car repair shop)
Ask Q

How do I know if my furnace blower motor is bad?

Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. “The most common cause is dirt accumulation due to lack of maintenance,” said Tom Beaulieu, president of Bay Area Services Inc.

What causes a furnace blower motor to go bad?

Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. “The most common cause is dirt accumulation due to lack of maintenance,” said Tom Beaulieu, president of Bay Area Services Inc.

How much does it cost to replace a furnace blower motor?

On average nationwide, a furnace blower motor replacement costs $400 to $600, including parts and labor. A single-speed blower motor costs around $450 to replace while a variable-speed motor costs $600 or more. You'll also need to budget labor, about $75 to $125 per hour.

How long do furnace blower motors last?

Do all furnace blower motors have a reset button?

All furnaces are equipped with a reset button. They are generally red or yellow and are located inside the blower compartment. The reset button is a safety feature that will shut down the furnace when a problem is detected, often a hot or overheating furnace, before it trips the circuit breaker.

Can a bad blower motor cause no heat?

Problems with Your Blower Motor or Blower Motor Resistor Without it, there's no circulation of air—hot, cold, or otherwise. The blower motor resistor is the part that controls the fan speed of the blower motor. Both of these components can fail, resulting in the heating system simply not working.

Is there a fuse for blower motor?

How do you test a blower motor resistor?

Place one lead of the Ohmmeter on terminal 1 of the resistor. Place the other lead on terminal 2 and check against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. Move the lead from terminal 2 to terminal 3 and check this reading against specifications.

Is it hard to replace a blower motor?

The replacement of the blower motor is common and straightforward, so most shops will perform the repair — many on the same day.

How long do furnaces usually last?

Where is a blower motor located?

The blower motor is usually under the dashboard on the passenger side. Blower motors that make loud squeaks or rattling noises may be worn out and on the verge of packing it in, but sometimes those noises are caused by leaves or other debris that can be cleaned out after the motor is removed from the vehicle.

When should a furnace blower motor be replaced?

Why is my furnace blowing cold air when the heat is on?

If your furnace is blowing cold air in your home, this is a sign of an issue with the flame detector, gas supply, air filter, pilot light, or condensate lines. Many of these issues are able to be easily solved on your own by sanitizing or replacing components in the gas furnace.

Why is my furnace humming but not kicking on?

When a furnace blower motor hums but won't start, the most common issue is a faulty run capacitor. This electrical part stores energy to boost the blower motor into starting. If the capacitor does not require replacement, the problem may be with the blower motor itself.

What happens when the blower motor resistor goes out?

If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored.

Is there a fuse for blower motor?

Should I hit the reset button on my furnace?

The purpose of the reset button on a furnace is to shut it down before it can trip your circuit breaker. The need for this may arise if the furnace becomes too hot, or if there is some sort of electrical system interruption. To get the furnace working again, you simply press the reset button back down again.

Why is my furnace running but no heat?

Dirty filters are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won't warm up. If the blower is running but no heat is coming out, replace the filter.

Why is my furnace not blowing hot air?

Troubleshooting Furnaces Not Blowing Hot Air Check batteries of your thermostat and replace the drained or faulty one. Check the fan settings on your thermostat if they are set to “auto” instead of “on”. Make sure someone else has not set your thermostat to a lower temperature.

Can Hear furnace but no heat?

When you turn the furnace on but no heat comes out, there may be an obstruction. Dirty air filters restrict airflow, which can make it feel like not much heated air is coming out of your vents. Check the furnace filter and replace it if its surface is covered with contaminants.

Where is the blower motor located in a furnace?

One of the hardest-working parts of your home's furnace is the blower motor. In a gas forced air furnace, it's located in a box at the base of the furnace next to the air filter, where it draws return air through the filter.

Where is the blower motor fuse located?

Many vehicles have two fuses for the blower motor, one in the interior fuse block and the other under the hood. The blower motor is usually under the dashboard on the passenger side.

How much does it cost to replace a blower motor resistor?

How much does a blower motor resistor cost? To replace the blower motor resistor, it would cost you anywhere between $50 to$150 – this includes the cost of equipment and labor. However, by doing it yourself at home, you can save up to $70.

Where is the blower resistor located?

The blower motor resistor is usually extremely easy to access, but the hard part can be positioning your body inside the car to remove the part. The resistor is at the bottom of the HVAC housing or just behind the glove compartment.

How long should a blower resistor last?

How long should a blower motor resistor last? While a blower motor resistor is built to last for the car's lifespan, you can expect it to last for 10-15 years, but it's possible for them to last longer or shorter depending on the climate, driving habits, and quality of the resistor.

What is the difference between a fan motor and a blower motor?

What Is a Blower Motor? Unlike the condenser fan motor, the blower motor is located indoors. It's the component that blows cool air through the ducts and into different parts of your home. So it's essentially your air mover.

Below you will find two interesting articles on a similar topic 👇

Why is there no voltage coming out of my blower?

How often should you replace your blower motor?

Tired of looking for a video for your question?

Video Answer below 👇

Were our answers helpful?

Yes No

Thanks so much for your feedback!

Have more questions? Submit a request

FAQ for the last Day

  • What time do most vehicle fires occur?
  • Almost half (44 percent) of the vehicle fire fatalities were between 15 and 34. Only 10 percent were at least 65 years of age. Highway vehicle fires were most common between 3:00 p.m. and 6:00 p.m.Where do most vehicle fires start at? What car catches fire the most? It found that hybrid vehicles, which have an internal combustion engine and an electric motor, had the most fires per 100,000 vehicl...


  • What car company has the most fires?
  • What car has the most fires? It found that hybrid vehicles, which have an internal combustion engine and an electric motor, had the most fires per 100,000 vehicles (3475), while vehicles with just an internal combustion engine placed second (1530 per 100,000). Fully electric vehicles had the fewest: 25 per 100,000. What brand of cars are catching fire? In the years after ABC Action News first expo...


  • What happens if my car catching fire?
  • Contact the fire department: Immediately contact the fire department as a burning car in the middle of the road can be dangerous. The fire department will be able to control the situation quickly and put off the fire. Do not attempt to put off the fire on your own: Never try to put off the fire on your own.What happens if your car is on fire? The National Fire Protection Association Council recomm...


  • Can a car’s exhaust system cause a fire?
  • Over time, the fumes leaking from a cracked exhaust pipe will damage surrounding components, and could even cause a fire. When they first come out of the engine, exhaust fumes are extremely hot, but cool gradually as they reach the tailpipe at the back of the vehicle.Can an exhaust set on fire? Antilag and two-step systems are a great way to induce fire from your exhaust. Antilag systems work by c...


  • How much water does it take to ruin your engine?
  • Even six inches of water can reach the bottom of passenger vehicles and if that happens it can set off a chain reaction of devastating damage to your engine.How much water is bad for a car? You and the vehicle can be quickly swept away. * Six inches of water will reach the bottom of most passenger cars causing loss of control and possible stalling. * A foot of water will float many vehicles. * Two...


  • Can a car explode if it overheats?
  • When cars overheat, a variety of major problems can arise - your radiator can explode and the engine could catch fire, among other potentially dangerous situations.What can cause a car engine to explode? Cracked or loose wiring or electrical problems, including a fuse that blows more than once. Oil or fluid leaks. Oil cap not on securely. Rapid changes in fuel or fluid level, or engine temperature...


  • Where do most vehicle fires start?
  • What is the most common cause of vehicle fires? The leading causes of vehicle fires were mechanical failures or malfunctions and electrical failures or malfunctions. Older vehicles accounted for three-quarters of the highway vehicle fires caused by mechanical or electrical failures or malfunctions. Maintenance is important throughout the vehicle's years of use. What causes a car to start on fire?...


  • Can a bad catalytic converter cause a car to catch fire?
  • The short answer is no. The catalytic converter itself won't burst into flames, but it can become a fire hazard. An overheated catalytic converter can ignite surrounding flammable materials while it's running hot.Overheating catalytic converters A car’s exhaust system can get extremely hot, up to 2,000 degrees in fact. However, if your catalytic converter gets damaged or gets even hotter than that...


Comments

Leave a Comment

<
Email us