The extractor hood along with the kitchen is one of the appliances should have a more regular cleaning and maintenance. If not cleaned at least once a month the filters or the inner walls of the hood, in the case that, by accident, we pledge the oil in a paella, or flambee some food, stored fat can ignite and cause a fire.
The filters can be washed in a dishwasher. If you don’t have a dishwasher, place them in the sink and sprinkle with vinegar. Let them a few minutes for this act and then clean them with hot water with a little washing up liquid. Rinse and let dry completely. Without the filters in place, clean the inside of the hood, light board, if it has the bulb clean it too. Let dry completely before refitting to the filters. Once in place, check that they are snug so it does not sag while cooking.
Clean the outside of the hood once a week with hot water and a little dish with a microfiber cloth.
(Original article in organizing and simplifying)