Tuesday, March 15, 2011

How to Repair a Range Hood


A range hood that doesn't adequately remove smoke and smells from your kitchen is usually suffering from one of a few common problems: The grease filter or some part of the exhaust ductwork may be clogged, or the fan may be bad. Neither of these repairs should take you much time.

Unclogging the exhaust system
Remove the grease filter by sliding it out of its clips.
Submerge the filter in a plastic pan filled with hot, soapy water and 1/2 cup (4 fl oz/125 ml) ammonia. Let it soak for at least 15 minutes. If it's still dirty, soak it again, then rinse it thoroughly and set it aside to dry.
Remove the exhaust fan. Unplug the fan, then use a screwdriver or a nut driver and socket to take out the screws that attach it to the hood.
Clean the fan blades with an old toothbrush dipped into the ammonia-water mixture (see Warning).
Clean the inside of the exhaust ductwork, using a plumber's snake with a heavy rag tied around the end. Push the snake through the ductwork. Soak the rag in the ammonia and water mixture, then run it through the ductwork. Rinse out the rag and repeat the operation until the duct appears to be clean.
Clean the exhaust hood that's attached to the outside of your house. Use the old toothbrush and the ammonia-water mixture to loosen the grit and grime around the flapper plate. Make sure the plate moves freely when you're done. If it sticks closed, it can prevent the exhaust hood from working.
Reinstall the grease filter.

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