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HomeRepair HelpNutone Vent Hood RepairNutone Range vent hood is overheating Repair
Nutone Range vent hood is overheating
When a NuTone range vent hood is overheating, restricted airflow is the most likely cause. Start by inspecting the grease filter. A clogged or heavily soiled filter makes the blower motor work harder, which can cause overheating. Clean the filter with a degreasing solution and warm, soapy water, or replace it if it is damaged or will not come clean. If the filter is clear, check the air duct for an undersized diameter, excessive length, or an outdoor obstruction such as a bird's nest. Confirm that the vent damper opens fully, since a stuck or partially closed NuTone range vent hood damper can restrict airflow. Next, inspect the blower wheel and fan blade for grease or debris, and clean or replace either part if necessary. These checks address the most common range vent hood overheating problems before you test less likely components such as the motor, capacitor, thermostat, thermal fuse, or control board. Always disconnect power before servicing the hood. Enter your model number to find the exact replacement filter, damper, blower wheel, fan blade, or other part for your specific NuTone range vent hood.
01 - Nutone Range Vent Hood Filter
The filters in the range hood need to be clean to have good air flow. If the filters are clogged, the blower will have a hard time moving air and the motor can overheat. Inspect the filter and clean or replace them if necessary.
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02 - Restricted Air Duct
If the range vent hood has always been too hot, inspect the air duct. If the air duct diameter is too small or the length of the duct is too long, the air flow will be restricted, possibly causing the vent hood to overheat. Refer to the installation instructions for proper vent size and maximum length. You can also inspect the outdoor vent hood for obstructions (a bird's nest, etc.) and confirm the vent damper is operating properly.
Highly Likely
03 - Nutone Range Vent Hood Damper
Most vent hoods have a damper to help keep the outside air from migrating back into the house when the vent is not in use. If the damper is stuck closed, or not opening all the way, the air flow may be restricted causing the motor to overheat.
Common
04 - Filter is Clogged
If the range hood is overheating, the grease filter(s) may be clogged. If a 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.
Common
05 - Nutone Range Vent Hood Blower Wheel
If the blower wheel is clogged with debris the air flow will be restricted which can cause the range vent hood to overheat. You can try cleaning the blower wheel with dish soap and warm water. If the blower wheel cannot be cleaned or is damaged, it will need to be replaced.
Uncommon But Possible
06 - Nutone Range Vent Hood Fan Blade
If the fan blade is clogged with debris the air flow will be restricted which can cause the range vent hood to overheat. You can try cleaning the fan blade with dish soap and warm water. If the fan blade cannot be cleaned or is damaged, it will need to be replaced.
Uncommon But Possible
Frequently Asked Questions
Why is my NuTone range vent hood overheating?
How do I clean a NuTone range vent hood filter or blower wheel?
Can a blocked duct or damper make a NuTone range vent hood overheat?
How do I find the correct NuTone range vent hood replacement part?
Should I keep using my NuTone range vent hood if it gets extremely hot?
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