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HomeRepair HelpBosch Vent Hood RepairBosch Range vent hood motor is loud or noisy Repair
Bosch Range vent hood motor is loud or noisy
Is your Bosch range vent hood motor loud or noisy? Worn motor bearings are the most likely cause. Turn off power, then gently wiggle the exhaust fan motor shaft. It should not move from side to side. If the shaft has even slight play, the bearings are worn. Older Bosch range vent hood motors with oil spouts may run more quietly after you lubricate the bearings, but replace the exhaust fan motor if lubrication does not help or the motor cannot be oiled. A loose or worn blower wheel is another common cause of range making loud noise. Check that the blower wheel is tight on the motor shaft and is not scraping the fan housing. The fan blade can cause the same problem if it has slipped, loosened, or worn out. These checks can help pinpoint Bosch range vent hood fan noise before you order parts. Enter your model number to find the exact exhaust fan motor, vent fan motor, blower motor, blower wheel, or fan blade for your specific Bosch range vent hood.
01 - Bosch Range Vent Hood Exhaust Fan Motor
The exhaust fan motor bearings might be worn out. To determine if the motor bearings are worn out, try wiggling the motor shaft back and forth. The motor shaft should not move at all. If the motor shaft moves even by a slight amount, the motor bearings are worn out. Some older, larger motors have oil spouts. If your motor has oil spouts, try adding oil to the motor bearings to get the fan to turn freely. If lubricating the motor bearings does not solve the problem, or if the motor can’t be lubricated, replace the exhaust fan motor.
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02 - Bosch Range Vent Hood Fan Motor
The fan motor bearings might be worn out. To determine if the motor bearings are worn out, try wiggling the motor shaft back and forth. The motor shaft should not move at all. If the motor shaft moves even by a slight amount, the motor bearings are worn out. Some older, larger motors have oil spouts. If your motor has oil spouts, try adding oil to the motor bearings to get the fan to turn freely. If lubricating the motor bearings does not solve the problem, or if the motor can’t be lubricated, replace the exhaust fan motor.
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03 - Bosch Range Vent Hood Blower Motor
The exhaust blower motor bearings might be worn out. To determine if the motor bearings are worn out, try wiggling the motor shaft back and forth. The motor shaft should not move at all. If the motor shaft moves even by a slight amount, the motor bearings are worn out. Some older, larger motors have oil spouts. If your motor has oil spouts, try adding oil to the motor bearings to get the fan to turn freely. If lubricating the motor bearings does not solve the problem, or if the motor can’t be lubricated, replace the exhaust fan motor.
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04 - Bosch Range Vent Hood Vent Fan Motor
Usually, when the vent fan motor is noisy, it indicates that the motor shaft bearings are worn out. Some older, larger motors have oil spouts. If your motor has oil spouts, try adding oil to the motor bearings to get the fan to turn freely. If lubricating the motor bearings does not solve the problem, or if the motor can’t be lubricated, replace the vent fan motor.
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05 - Bosch Range Vent Hood Blower Wheel
The blower wheel might be worn out and loose on the motor shaft causing it scrape on the fan housing. Check to make sure the wheel is tight on the motor shaft and has not slipped on the shaft causing it to contact the fan housing. If the blower wheel is loose on the motor shaft it should be replaced.
Highly Likely
06 - Bosch Range Vent Hood Fan Blade
The fan blade might be worn out and loose on the motor shaft causing it scrape on the fan housing. Check to make sure the blade is tight on the motor shaft and has not slipped on the shaft causing it to contact the fan housing. If the fan blade is loose on the motor shaft it should be replaced.
Highly Likely
Frequently Asked Questions
Why is my Bosch range vent hood motor loud or noisy?
Can I lubricate a noisy Bosch range vent hood motor?
Could the blower wheel or fan blade be causing the noise?
How do I test a Bosch range vent hood fan motor before replacing it?
How do I find the correct Bosch range vent hood motor or blower wheel?
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