Albert C Marysville , OH March 08, 2016 Appliance: KitchenAid Microwave Hood Combo KHMS2040BSS0 Kitchenaid Microwave Khms2040bss0 / : Filters needed to be replaced. How to replace Microwave Charcoal Filter. Ordered filters and replaced as directed. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes