{"id":17731,"date":"2025-05-16T05:37:22","date_gmt":"2025-05-16T12:37:22","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=17731"},"modified":"2026-07-14T12:06:44","modified_gmt":"2026-07-14T19:06:44","slug":"whirlpool-microwave-air-damper-w10843943-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/b\/whirlpool-microwave-air-damper-w10843943-replacement-guide\/","title":{"rendered":"Whirlpool Microwave Air Damper W10843943 Replacement Guide"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Learn how to replace the Whirlpool microwave air damper (W10843943) to resolve airflow and venting issues with this step-by-step guide.<\/p>\n","protected":false},"author":3,"featured_media":17855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Whirlpool microwave W10843943 air damper","_yoast_wpseo_title":"%%title%% %%page%%","_yoast_wpseo_metadesc":"Learn how to replace the Whirlpool microwave air damper (W10843943) to resolve airflow and venting issues with this step-by-step guide.","_aviaLayoutBuilderCleanData":"[av_textblock size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' id='' custom_class='' av_uid='av-mebhodzt' admin_preview_bg='']\r\nIs your Whirlpool microwave making strange noises or failing to vent air properly? A malfunctioning air damper could be the culprit, but don't worry\u2014this common issue is easier to fix than you think. Keep reading to discover how you can effortlessly replace the air damper yourself with just a screwdriver, and be sure to check out our step-by-step how-to video below!<\/span>\r\n[\/av_textblock]\r\n\r\n[av_video src='https:\/\/youtu.be\/NlP5QUctq9A' mobile_image='' attachment='' attachment_size='' format='16-9' width='16' height='9' conditional_play='' id='' custom_class='' av_uid='av-mebhoqu5']\r\n\r\n[av_textblock size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' id='' custom_class='' av_uid='av-me8n7mj3' admin_preview_bg='']\r\nLooking for the right part?<\/b> Enter your appliance model number below to find the exact match and get your appliance running like new again!<\/span>\r\n\r\n[search]<\/span>\r\n[\/av_textblock]\r\n\r\n[av_image src='https:\/\/www.appliancepartspros.com\/b\/wp-content\/uploads\/2025\/05\/20250515_0958_Tech-Savvy-Kitchen-Microwave_simple_compose_01jva3qnjaexfs3xc2kpayzrmq-1500x630.png' attachment='17855' attachment_size='featured_large' copyright='' caption='' styling='' align='center' font_size='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation' hover='' appearance='' link='' target='' title_attr='' alt_attr='' lazy_loading='disabled' id='' custom_class='' av_element_hidden_in_editor='0' av_uid='av-mapfsfor' admin_preview_bg=''][\/av_image]\r\n\r\n[av_textblock size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' id='' custom_class='' av_uid='av-mamwcpvu' admin_preview_bg='']\r\nIs your Whirlpool microwave making strange venting noises or not exhausting air properly? You might be dealing with a faulty air damper, the part that helps direct airflow from the microwave to the outside. The good news? Replacing the damper (part number W10843943) is a quick and easy job you can handle yourself with a screwdriver and a few minutes. Let\u2019s go through how to get your microwave venting like new again.<\/span>\r\n\r\nWatch: How to replace the Air Damper<\/b><\/a>\r\n\r\nThe information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer's documentation or<\/span> contact us<\/b><\/a> with any questions.<\/span><\/em>\r\n\r\n[lwptoc numeration=\"none\"]\r\n

Full safety notes below<\/a><\/p>\n\n

What is the Air Damper and What Does it Do?<\/span><\/h2>\r\nThe air damper is a small flap or vent that opens and closes to control air circulation in your microwave. It is located near the main vent fan on the top, back, or side of the unit. When the vent fan turns on, the air damper opens to allow hot air to escape the cooking chamber and be vented outside. This prevents the microwave components from overheating.<\/span>\r\n\r\nOnce the cooking cycle ends, the fan shuts off and the air damper closes to contain the heat inside. If the air damper becomes stuck, bent, or damaged over time, it can no longer open properly. This prevents proper ventilation, leading to overheating issues. Replacing the faulty air damper restores normal airflow.<\/span>\r\n

When Should the Air Damper Be Replaced?<\/span><\/h2>\r\nThere are a few common signs that indicate it's time to replace your microwave's air damper:<\/span>\r\n