--- title: "Range hoods & ventilation" description: "Thermador range hoods & ventilation: paired to the cooktop below it and, on the newer kitchens, talking to it — a hood that will not follow the burner…" url: "https://thermadormiami.support/appliances/range-hood/" date_modified: "2026-08-19" Appliance type: "Range hoods & ventilation" --- # Thermador range hoods & ventilation ### The quietest part of the kitchen to ignore A hood is the appliance people notice last and clean least. Most of what we are called out for on them is maintenance that had been postponed rather than a failure. ### What actually goes wrong - **The fan not starting, or stuck at one speed.** Motor, capacitor or the control, and which of the three is usually clear from whether it hums. - **The light out while the fan works.** Two separate circuits, so this is the smaller job it sounds like. - **A hood that no longer follows the cooktop.** On the newer kitchens the two talk to each other, and a hood that has stopped answering is a connection question rather than a motor one. - **A pull-out that will not pull out.** The mechanism is a slide with a switch on it; when it jams the fan often never gets asked to run. - **Grease.** Filters left long enough stop being filters, and everything behind them starts doing their job instead. ### Salt air and dampers The damper at the end of the duct is the part this coast is hardest on: it sits in the airflow, it is out of sight, and it corrodes until it stops opening. A hood that sounds normal and clears nothing is usually a damper rather than a motor. If yours ducts out through an exterior wall within sight of the water, mention it — it moves that check to the top of the list. Pull-out · Chimney · Island · Downdraft Range hood repair The fan not starting or running at one speed The light out while the fan works A hood that no longer follows the cooktop The quietest part of the kitchen to ignore A hood is the appliance people notice last and clean least. Most of what we are called out for on them is maintenance that had been postponed rather than a failure. What actually goes wrong The fan not starting, or stuck at one speed. Motor, capacitor or the control, and which of the three is usually clear from whether it hums. The light out while the fan works. Two separate circuits, so this is the smaller job it sounds like. A hood that no longer follows the cooktop. On the newer kitchens the two talk to each other, and a hood that has stopped answering is a connection question rather than a motor one. A pull-out that will not pull out. The mechanism is a slide with a switch on it; when it jams the fan often never gets asked to run. Grease. Filters left long enough stop being filters, and everything behind them starts doing their job instead. Salt air and dampers The damper at the end of the duct is the part this coast is hardest on: it sits in the airflow, it is out of sight, and it corrodes until it stops opening. A hood that sounds normal and clears nothing is usually a damper rather than a motor. If yours ducts out through an exterior wall within sight of the water, mention it — it moves that check to the top of the list. --- **[Read full article: Range hoods & ventilation](https://thermadormiami.support/appliances/range-hood/)**