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HomeRepair HelpBosch Vent Hood RepairBosch Range vent hood is overheating Repair
Bosch Range vent hood is overheating
If your Bosch range vent hood is overheating or the vent hood feels too hot, start by checking for restricted airflow. A dirty or clogged filter is the most likely cause because grease buildup makes the blower motor work harder and can lead to overheating. Clean the Bosch range vent hood filter with a degreasing solution, or replace it if it is damaged or will not come clean. If the filter is clear, inspect the air duct for an undersized or excessively long run, outdoor obstructions, and a vent damper that does not open fully. A stuck Bosch range vent hood damper can limit airflow even when the hood appears to run normally. Next, check the blower wheel and fan blade for grease or debris, and replace either part if it is damaged or cannot be cleaned. Turn off power before servicing the hood, and allow the motor to cool first. Enter your Bosch range vent hood model number to find the exact replacement filter, damper, blower wheel, or fan blade for your specific appliance.
01 - Bosch 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 - Bosch 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 - Bosch 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 - Bosch 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 Bosch range vent hood overheating?
How do I clean a Bosch range vent hood filter that is clogged?
Can a blocked duct or stuck damper cause my range vent hood to overheat?
Should I replace the blower wheel or fan blade if my Bosch vent hood is overheating?
How do I find the correct Bosch range vent hood filter or other replacement part?
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