How To Check Furnace Inducer Motor? Essential Tips And Guide

The Inducer Motor is a key part of a gas furnace heating system. It helps keep the system safe and working well by creating a flow of air. If your furnace won’t start, doesn’t generate heat, or makes strange noises, there could be an issue with the Inducer Motor.

To check it, first, turn off the power and take off the access panels, so you can locate the Motor. Usually, it’s connected to the blower and draft inducer. Inspect the fan blades for damage – like wobbling or worn-out bearings.

If it all looks good, use a multimeter to test the capacitor. A bad one can cause poor fan performance. You should also test the pressure switches and wiring connections.

However, if you hear strange noises like rattling or whirring coming from the vents or exhaust, it’s likely that the windings are worn out and you need a new Inducer Motor

How To Check Furnace Inducer Motor

Signs of a bad Inducer Motor

To identify a bad inducer motor in your furnace, start by checking for signs such as strange noises, failure to start, or blowing cold air. These issues could point to problems with the inducer motor. In this section, we will discuss these signs in detail and help you understand what to look out for. We’ll cover each sub-section briefly, so you can take the necessary action to fix the issue or seek professional help.

Strange noises

Grinding, whirring, or high-pitched sounds? Clanking noises? Vibrations? All are bad signs that something’s wrong with your inducer motor in your HVAC system. Don’t ignore them! They could lead to further damage and even system failure.

Stay proactive – if you notice anything out of the ordinary, get in touch with a professional right away. Don’t be caught unaware by unexpected issues. Keep your HVAC running effectively by being mindful of any strange sounds, noises, or vibrations.

Failure to start

Your furnace could be having trouble due to a bad inducer motor. It helps to exhaust the combustion gases by creating air pressure. Without it, your furnace won’t ignite – a big safety hazard.

Signs of trouble include noises, cycling on and off, and bad smells. Other subtle clues could be fluid leaks, clogged components, or dust-restricting airflow.

Pro Tip: To keep your inducer motor running well, get regular preventative maintenance by certified HVAC technicians. Annual tune-ups will keep the system in top shape and avoid any hazardous malfunctions.

Blowing cold air

Is your furnace blowing cold air, not warm? It might be a sign of a bad inducer motor.

This motor is responsible for getting rid of dangerous gases and providing the proper airflow for the burners.

When it’s not working, there won’t be enough airflow. This will make the furnace put out cold air. Also, you might hear weird noises or feel vibrations. These are warnings that you need to fix or replace the motor soon.

Ignoring these signs can be expensive. Comfort Pro Heating & Air Conditioning says, “If you don’t replace the faulty motor, the heat exchanger can crack and fail.” So make sure to keep up with regular furnace maintenance.

Solve the mystery of the bad inducer motor with these steps:

  1. Step 1: Turn off the power to the furnace.
  2. Step 2: Locate the inducer motor.
  3. Step 3: Remove the motor from the furnace.
  4. Step 4: Inspect the motor for any signs of damage.
  5. Step 5: Replace the motor if necessary.
  6. Step 6: Reinstall the motor and turn the power back on.

Steps to Check Inducer Motor

To check the inducer motor of your furnace, follow these steps with the help of our guide. First, turn off the furnace and remove the access panels. Next, locate the inducer motor and check for any physical damage. Then, test for voltage and check the pressure switch. Lastly, check for a bad capacitor. These are the essential steps you need to take to ensure your HVAC system is functioning smoothly and that you avoid any damages or costly repairs.

Turn off the furnace

Before inspecting your furnace’s inducer motor, the primary step is turning it off. This guard against unintentional injuries from electrical shocks or hot surfaces. Shutting off the furnace also guarantees the motor has cooled down enough for you to check it safely. Here’s a 6-step guide:

  1. Look for the furnace’s power switch.
  2. Flip it down or switch it to the “off” position.
  3. If there’s no visible power switch, locate your home’s circuit breaker panel.
  4. Carefully open the panel door and find the breaker controlling your furnace.
  5. Flip this breaker switch down or to the “off” position.
  6. Ensure all lights and sounds of power are off before inspecting.

Once you’ve shut off the furnace, leave enough time for both the system and motor to cool down if needed. Then, you can look at other components such as switches, filters, or pilot lights.

Remember safety when dealing with electrical equipment. Research shows most winter home fires are due to neglecting safety procedures when running a heating source like a furnace. So, always stick to safety guidelines when doing DIY maintenance work on your furnace. Let’s remove the access panels and discover the motor’s secrets!

Remove the access panels

Inducer motors are a must for gas furnaces. So, when you want to check it, you have to start by removing the access panels. Here’s how:

  1. Turn off the furnace and wait 15 minutes for it to cool down.
  2. Find the blower motor’s panel and take it off – unscrew it or lift it off its hinges.
  3. Then, look for any screws or clips that hold the panel in place.
  4. Carefully pull out the panel and store it in a safe spot.
  5. If needed, repeat steps 2-4 for any other panels.

Note: Some components may require more advanced tools or knowledge. It’s best to get professional help in such cases.

Also, remember to turn off all power sources before any repairs or maintenance.

In conclusion, you can easily remove access panels to check your furnace’s inducer motor. Just follow these steps and take the necessary precautions.

Locate the Inducer Motor

Inducer motors are important for sucking out fumes from gas furnaces and boilers. Here’s how to locate it like a pro.

  1. Remove the furnace panels to expose the interior. Inspect the venting system and follow it back to the furnace. You’ll find the fan motor near the end of the vent pipe.
  2. Look for a white PVC or black metal pipe coming out of the roof or wall. This is the flue pipe and can help you find the inducer motor.
  3. Check around and below the control board inside the furnace’s access panel. The inducer motor should be attached to wires.

If you can’t find it, consult your owner’s manual or contact an expert. Remember, not all furnaces have an inducer motor. Its position and style may vary.

Old gas furnaces had gravity-fed exhausts relying on natural ventilation. But due to safety concerns, manufacturers included mechanical devices, like draft fans, leading to today’s inducer motors. Finding physical damage is hard – but at least with your furnace, you won’t get poked!

Check for physical damage

Inspecting the inducer motor is essential for running the HVAC system. Part of this process is checking for physical damage. Here are some steps to follow:

How To Check Furnace Inducer Motor

Safety measures must be prioritized – don’t touch exposed electrical components.

A technician failed to detect physical damage in an aged HVAC inducer assembly. This caused excessive vibration and further internal damage within two months. Inspect and maintain your HVAC Inducer regularly to prevent this. Lastly, check for voltage to ensure your motor is the only thing sparking.

Test for voltage

Testing voltage is key when examining an inducer motor. A multimeter is an ideal tool to measure the voltage at connections and components. It’s a handheld device that reads electrical currents, helping you spot any issues with the inducer motor’s performance.

To carry out a successful voltage test, make a table with columns such as ‘Connections‘, ‘Voltage‘, and ‘Acceptable range‘. Test each connection in each component separately and see if it is within the acceptable range. For instance, when testing connections between GND & VCC, put probes on each connection; black on GND (Ground) and red on VCC (Voltage). Pay attention to the polarity; if not followed correctly it will result in incorrect readings.

Besides testing voltage continuity with a multimeter, you can also look for voltage drops across circuits or wires. A high voltage drop shows resistance, meaning the inducer motor needs more current which leads to it deteriorating over time.

An industrial electrician faced costly downtime due to issues with his inducer motor. To diagnose the problem, he used different meters like an ammeter and voltmeter to test all components. He found zero resistance across one of the components, which ended up needing to be replaced.

Checking the pressure switch is like viewing your blind date’s profile prior to the first date – it’s essential to make sure everything is in order.

Check the pressure switch

When troubleshooting an inducer motor, check the pressure switch. This ensures the motor is functioning. Disconnect the power source first. Locate the pressure switch near the draft inducer motor assembly. Gently remove the tubing or hoses. Test for continuity with a multimeter. No continuity? Replace the switch. Resolve other issues first. They can affect the results.

A study by Modernize showed average homeowners spend $200-$400/year on HVAC repairs. A bad capacitor isn’t someone obsessed with working out.

Check for a bad capacitor

A capacitor is a vital part of an inducer motor. It stores and releases electrical energy when needed. If the capacitor is bad, it can lead to a faulty inducer motor which causes heating or cooling issues. To keep the motor running, you need to check if the capacitor is bad. Here’s a guide:

  1. First, turn off the power supply to the inducer motor.
  2. Locate the capacitor which can be inside the blower compartment or another part of the furnace.
  3. Inspect it for any damage like bulging or leaking. If there are any, replace them immediately.
  4. Use a multimeter to check if current flows through each terminal.
  5. Check the resistance across both terminals and note down the readings. Compare this with what is given in the user manual.
  6. If the resistance is high, replace the capacitance or call a technician.

It’s best to get professionals to do regular checks. This will keep the motor running smoothly and increase its lifespan. Checking the capacitors is like getting a new heart for your HVAC system – it sounds overwhelming but it’ll bring back the heating and cooling.

Replacing Inducer Motor

To replace the bad furnace inducer motor, you need to find the correct replacement, remove the defective motor, and install the new motor assembly. It’s important to get the right replacement inducer motor from the manufacturer. Next, you need to remove the defective inducer motor carefully and safely, ensuring there’s no damage to other furnace parts. Finally, install the new motor assembly in place of the defective one, and reassemble everything. These steps can help you to repair your furnace inducer motor without calling a professional HVAC technician.

Find the correct replacement

Finding the right replacement for an inducer motor can be tricky. You’ve got to make sure the new one matches your old one’s specs, or else it won’t work! To help, here are 3 steps:

  1. Find the model number on your existing motor’s label.
  2. Hunt online or at a local HVAC supplier for a compatible replacement.
  3. Compare specs, like the voltage, horsepower, and rotation direction.

Remember, not all motors are interchangeable. So double-check before buying! If you need help, call an experienced HVAC technician.

Inducer motors have come a long way since they first appeared in residential furnaces in the late 1980s. They’ve become more reliable and energy efficient every year. Nowadays, they’re an essential part of all modern furnaces and boilers. So, say goodbye to the old motor and get ready for a new one!

Remove the defective motor

When a furnace’s inducer motor is defective, it is essential to remove it. To do this safely and correctly, one must pay close attention to detail and follow the steps. Firstly, switch off the furnace from the breaker panel or unplug it. After that, unplug the motor connectors one by one. Then, use a nut driver or socket set to remove the mounting bolts and take out the motor belt. Discard the old motor as per the guidelines. Clean the accumulated dirt and debris in the chamber. When replacing, be sure to install and maintain it correctly. Otherwise, you will be stuck with hefty repair bills. Get a good replacement motor for reliability and install it like a puzzle master.

Install the new motor assembly

Replacing the inducer motor is key to keeping your furnace at peak performance. If you need help, get a professional technician. But before you buy, make sure you pick a compatible motor for your furnace model. Here’s how to install it:

  1. Start by turning off the power and unplug any electrical connections to the old motor.
  2. Take out the screws that secure the old motor and detach it from the furnace.
  3. Fit and secure the new motor assembly onto the mounting surface with the right screws.
  4. Plug the electrical connections back in as they were previously.

Did you know? According to, a failing inducer motor can lead to problems like inefficient heating, odd noises, and even complete system breakdown.

Conclusion: It may cost you a pretty penny, but at least you won’t have your heating system sacrificed to the HVAC gods!


First, see if power is supplied. If the fan starts after a few seconds, there’s power. If not, it’s likely a bad capacitor. Check the motor directly. Turn off the electricity first. Then take the inducer blower away from the system. Look for signs of damage or wear, like worn bearings or broken wires