Furnace Induction Motor

A replacement draft inducer motor will cost between $500 and $700. These motors are specific to manufacturers, so it can be harder to find the exact model needed. Technicians may not have the specific model on hand during emergency repair jobs at odd hours. Repairs cost less, with prices ranging from $250-$450.

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

Tapping noises are one of the most common signs of a bad inducer motor. These noises may be the result of dirt or soot collecting around the fan shaft. They might also come from the bearing in the motor clicking together. Vibrating noises are another sign of a bad inducer motor.

What causes an inducer motor to fail?

Most inducer motors failures are simply attributed to the older age of the furnace. In most cases, the internal bearings wear out and since the unit is a sealed unit, there is no way to repair the original motor. Instead the unit is simply replaced with a new one.

How long do furnace inducer motors last?

Furnace inducer motors can have a life expectancy of 12-15 years. A replacement furnace inducer motor can cost around $800.

How long will a noisy inducer motor last?

Barring unforeseen issues, a high-quality inducer motor is designed to last up to 20 years. Heat and other factors can shorten its lifespan, but it's not the type of part you should replace every decade. Inducer motors are also not necessarily something easy to repair.

What happens if the inducer motor stops working?

If the inducer motor doesn't turn on when it's supposed to, the furnace will recognize this and shut down. It will wait a bit and try again. If the motor doesn't start after 3 to 5 tries, the control board will stop sending voltage to the inducer motor, and essentially locking it out from attempting it anymore.

How do you test an inducer motor?

Use a multimeter on the voltage setting to test power going to the inducer motor. Probe the hot (black wire) and neutral (white wire). ... Inducer fan motor electrical and power issues

1. Check if the board is getting power.
2. Use your multimeter to test between the R and C terminals on your control board.

Can you lubricate furnace inducer motor?

Furnace Maintenance If the motor has oil ports, it should be lubricated annually. Apply two or three drops of 10-weight nondetergent motor oil (not all-purpose oil) to each port. Do not overlubricate. If the blower shaft has oil ports, it, too, should be lubricated annually, following the same procedure.

Does the inducer motor always run?

Simply put, an inducer fan should start up when your thermostat calls for heat. It will do this anywhere from 30 seconds to one minute. What is this? It then stays running for as long as your system is heating the house and shuts off when your system cycles off.

How do I know if my inducer motor capacitor is bad?

Look for these signs and symptoms.

1. Symptom: Clicking Noise. Fortunately, a capacitor can show symptoms of failure before, or during a failure event.
2. Symptom: Acrid Burning Smell Coming from the Furnace. ...
3. Symptom: Humming Sound from the Blower. ...
4. Symptom: No Power At All. ...
5. Symptom: Erratic Motor Operation.

What safety protects a furnace if the inducer motor fails?

A furnace pressure switch is an automatic safety feature located near the motor. It shuts the furnace down if it senses negative pressure created by the draft inducer motor. This protects your home from dangerous backdrafting, which is when exhaust fumes are reintroduced into the system.

How do you fix a noisy inducer motor?

Noisy Draft Inducer The small motor mounted within the housing can begin to make noise when there is buildup on the wheel (such as sulfur or creosote) or when the motor is close to the end of its usable life. The remedy for a noisy inducer is to replace the entire assembly.

How much does it cost to install an inducer motor?

The average cost of a Carrier inducer motor replacement is between $800-$1800.

Should I replace a 15 year old furnace?

After about 15 years or so, you may need to consider a furnace replacement if your unit has been experiencing significant problems and requiring frequent repairs. You can extend the lifespan of your furnace by performing regular maintenance, including changing the filters and cleaning the burners.

Why do induction motors make noise?

The acoustic noise in induction motors has three main sources: the first one is the ventilating system which is responsible for the noise level of 2 and 4 pole-motors due to the fan speed. The second is the magnetic noise, generated by vibration of the core due to the electromagnetic forces in the airgap.

Why does my furnace make a loud noise when it turns on?

Your ductwork expands and contracts during your furnace's heating cycles. This can sometimes create booming or banging sounds when your air handler turns on and the pressure changes inside of your ducts.

Why is my furnace exhaust fan so loud?

A loose fan belt can cause the fan to turn off-balance and make unwanted noises. Replace a loose belt with the correct model, ensuring it is correctly seated in the belt groove so that the fan can rotate smoothly. Your exhaust fan and motor may have been installed incorrectly, causing abnormal noises during operation.

How do you test a bad inducer?

So if your inducer motor is no easy while it's running the first thing I like to check if I come out

How do you replace a furnace inducer motor?

Now loosen the clamp and slide the exhaust pipe up disconnect grounding wire and the draft inducer

How does water get into inducer motor?

one cause is an improperly pitched vent pipe. If the pipe doesn't have the proper pitch back towards the furnace, it will fill with water while the furnace is running. As soon as it shuts off, the water rushes back towards the furnace, overloads the in-line drain fitting, and ends up in the inducer.