High heat causes motor insulation to fail prematurely. If the motor windings are burning out frequently during heating season and not cooling season, the cause is probably that the high heat is worse during the heating season when the blower is delivering hot air.
Why does my AC work but not the heater?
Clogged Ducts
Uneven airflow throughout your home can be caused by a blockage in your home’s ductwork. It’s easy for dust to build up inside your home’s ducts, especially in the cold winter months when most homes have poor ventilation. Clean your vents regularly to prevent dust from interfering with your heater.
What causes a furnace motor to burn out?
Buildup of dust, dirt, or debris. Electrical problems, including an excessive voltage supply. Motor insulation failing prematurely due to high temperatures. A weak blower capacitor.
What would cause a furnace blower not to kick on?
If you see or hear the fan turn on, your blower motor is not the culprit. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly.
Does the blower motor control heat and AC?
The HVAC blower motor is the heating and cooling systems component that sends conditioned air from the furnace, heat pump, or air conditioner into the home. Once the system heats or cools the air, the blower motor forces it through the duct system and out the vents in rooms throughout the house.
How do I know if my blower motor resistor is bad?
If you try to increase the air pressure and you feel no difference in the pressure blowing, then your blower motor resistor may be failing. A damaged blower motor resistor will work on one fan speed which may not be enough to keep the inside of your car cool or warm enough.
How long should a blower motor last on a furnace?
10 to 20 years
How Long Does a Furnace Blower Motor Last? Blower motors are designed to last just as long as your furnace itself, anywhere from 10 to 20 years. Just as with any HVAC system, the better maintained and serviced your equipment is by experienced HVAC technicians the longer it will last and the fewer repairs you’ll face.
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.
Do all furnace blower motors have a capacitor?
Capacitors are used in many but not all electric motors including air conditioners, heat pumps, furnace or air conditioner blower fan motors, refrigeration equipment compressors, and well pumps.
How much should it cost to replace a furnace blower motor?
$400 to $600
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.
Can a furnace blower motor be repaired?
Replacing a Furnace Blower Motor
And all you need to make sure is that you have all the required parts according to the model and you are good to go with replacing the motor all by yourself. The Blower Furnace units are always designed in a way that you can replace the parts individually in case it goes faulty.
How long do furnaces usually last?
15 to 20 years
A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.
