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Range Vent Hood Doesn't Vent to The Outside

The part(s) or condition(s) listed below for the symptom Range vent hood doesn't vent to the outside are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Range vent hood doesn't vent to the outside

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Cause 1Exhaust Fan Motor

To determine if the fan motor is defective, turn on the vent hood and check to see if the fan blade is spinning. If the fan blade does not spin, ensure that power is getting to the motor. If power is not getting to the motor, test the switch for continuity. If the motor is receiving power, but the motor won’t turn, replace the exhaust fan motor.

Parts
Cause 2Fan Motor

To determine if the fan motor is defective, turn on the vent hood and check to see if the fan blade is spinning. If the fan blade does not spin, ensure that power is getting to the motor. If power is not getting to the motor, test the switch for continuity. If the motor is receiving power, but the motor won’t turn, replace the fan motor.

Parts
Cause 3Blower Motor

To determine if the blower motor is defective, turn on the vent hood and check to see if the fan blade is spinning. If the fan blade does not spin, ensure that power is getting to the motor. If power is not getting to the motor, test the switch for continuity. If the motor is receiving power, but the motor won’t turn, replace the blower motor.

Parts
Cause 4Blower Wheel and Housing

One possibility is that something is caught in the blower wheel. It is also possible that the blower wheel is rubbing against the blower housing. To determine if the blower wheel is at fault, try spinning the blower fan by hand. If the blower wheel does not spin freely, check for the blower wheel for obstructions. In addition, ensure that the blower wheel is not rubbing against the blower housing. If the blower wheel is clear of obstructions, but it still doesn’t spin freely, replace the blower wheel and housing.

Parts
Cause 5Blower Wheel

One possibility is that something is caught in the blower wheel. It is also possible that the blower wheel is rubbing against the blower housing. To determine if the blower wheel is at fault, try spinning the blower fan by hand. If the blower wheel does not spin freely, check for the blower wheel for obstructions. In addition, ensure that the blower wheel is not rubbing against the blower housing. If the blower wheel is clear of obstructions, but it still doesn’t spin freely, replace the blower wheel.

Parts
Cause 6Fan Blade

Check to see if the fan blade is still tightly fastened to the motor shaft. If the blade is loose, try to tighten it. If the blade cannot be properly tightened, replace it.

Parts
Cause 7Charcoal Filter

If the range hood is not venting correctly check out the charcoal filter(s). If the filter is very dirty it should be replaced as there is no good way to clean them in most cases.

Parts
Cause 8Grease Filter

If the range hood is not venting correctly check out the grease filter(s). If the filter is very dirty it can be cleaned. Remove it and soak it in a degreasing solution until the grease is dissolved. Next, wash it with warm, soapy water to remove any traces of the degreaser. If the filter does not come clean or is damaged, replace it.

Parts
Cause 9Air Filter

If the range hood is not venting correctly check out the air filter(s). If the filter is very dirty they should be replaced as there is usually no good way to clean it in most cases.

Parts
Cause 10Air Flow Problem

Check the vent to determine if it is clogged. In addition, examine the ducting to ensure that it is clear of debris.