{"id":19647,"date":"2025-07-02T13:21:12","date_gmt":"2025-07-02T20:21:12","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=19647"},"modified":"2026-07-14T12:54:34","modified_gmt":"2026-07-14T19:54:34","slug":"preparing-your-central-ac-for-winter-a-comprehensive-checklist","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/b\/preparing-your-central-ac-for-winter-a-comprehensive-checklist\/","title":{"rendered":"Preparing Your Central AC for Winter: A Comprehensive Checklist"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Don\u2019t let winter damage your AC. Follow our comprehensive guide to prep your central air system for cold weather and extend its lifespan.<\/p>\n","protected":false},"author":3,"featured_media":19688,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_aviaLayoutBuilderCleanData":"[av_image src='https:\/\/www.appliancepartspros.com\/b\/wp-content\/uploads\/2025\/07\/20250702_1619_Snow-Covered-AC-Unit_simple_compose_01jz6cp8qae85tntktgnjk373z-1500x630.png' attachment='19688' 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-mcmej49u' 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-mckuz1e8' admin_preview_bg='']\r\n<span style=\"font-weight: 400;\">As the seasons change and temperatures drop, most homeowners shift their focus from cooling to heating. But before you fire up the furnace and forget about your central air conditioning system for the next few months, take the time to prepare it for winter. We\u2019ll walk you through preparing your central AC system for winter. Here\u2019s everything you need to know to keep your unit in top shape during the off-season.<\/span>\n\nWe recommend consulting your manufacturer's documentation or<\/span><a href=\"https:\/\/www.appliancepartspros.com\/repair-help\/\"><span style=\"font-weight: 400;\"> contact us<\/span><\/a><span style=\"font-weight: 400;\"> with any questions.<\/span><\/em>\r\n\r\n[lwptoc numeration=\"none\"]\r\n<p style=\"font-size:14.5px;margin:14px 0;font-family:system-ui,-apple-system,sans-serif\"><a href=\"#app-safety-notes\">Full safety notes below<\/a><\/p>\n\n<h2><span style=\"font-weight: 400;\">Why Winterizing Your AC Matters<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Your central air conditioner may not be in use during winter, but it still needs attention. Exposure to cold weather, snow, debris, and rodents can damage outdoor components. Neglecting to clean or inspect the system can lead to corrosion, electrical problems, or system inefficiencies later. By winterizing your AC, you:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prevent moisture buildup and corrosion<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Protect electrical components from freezing conditions<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep pests from nesting inside your equipment<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintain overall efficiency and system reliability<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensure a smoother startup when summer returns<\/span><\/li>\r\n<\/ul>\r\n<h2><span style=\"font-weight: 400;\">Tools and Supplies You May Need<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Before you get started, gather the following tools and materials:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Garden hose with spray nozzle<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Screwdrivers (flathead and Phillips)<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shop vacuum or soft brush<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">AC condenser cover or waterproof tarp<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Foam pipe insulation<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Zip ties or weatherproof tape<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Multimeter (for part testing, if needed)<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replacement air filter<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coil cleaner (optional)<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mild detergent and cloths<\/span><\/li>\r\n<\/ul>\r\n<h2><span style=\"font-weight: 400;\">Turn Off the Power to the AC System<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Start by cutting power to your AC unit. This prevents it from accidentally kicking on during a warm winter day and stops moisture from entering the system during idle cycles.<\/span>\r\n<ol>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Locate the disconnect box near your outdoor condenser unit.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open the cover and pull the disconnect or flip the switch to shut off power.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You can also turn off the breaker labeled for your AC at the main panel as a backup.<\/span><\/li>\r\n<\/ol>\r\n<span style=\"font-weight: 400;\">Turning off the power protects internal components and helps ensure safety while you work on the system.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Clean the Outdoor Condenser Unit<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Before covering your AC, make sure it\u2019s free of dirt, debris, and moisture.<\/span>\r\n<ol>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove leaves, twigs, and grass from around the base of the unit.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use a garden hose to gently rinse dirt and dust from the exterior coils. Spray from the inside out, using low pressure.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If coils are especially dirty, apply a coil cleaner, let it sit, then rinse.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wipe the top and sides with a damp cloth and mild soap to remove bird droppings or sap.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Let the unit dry completely before covering it.<\/span><\/li>\r\n<\/ol>\r\n<span style=\"font-weight: 400;\">Avoid using a pressure washer, excessive force can bend or damage the fins.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Inspect the Unit for Visible Damage<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Look for signs of wear or potential issues that should be addressed before winter.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Check for:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Damaged or bent coil fins<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cracks or rust spots on the housing<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loose screws or panels<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Frayed or exposed wiring<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Signs of rodent activity or droppings<\/span><\/li>\r\n<\/ul>\r\n<span style=\"font-weight: 400;\">Fix minor issues like loose panels or visible debris. If you find wiring damage or a compromised electrical component, make a note to replace or repair it before the next cooling season.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Cover and Protect the Condenser Unit<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Covering your AC\u2019s outdoor unit helps protect it from snow, ice, falling debris, and nesting animals. That said, it\u2019s important not to seal the unit completely, as that can trap moisture and promote rust.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Tips for covering your AC:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use a breathable cover designed for AC units (not a plastic tarp).<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If using a tarp, leave some space at the bottom to allow airflow.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Secure the cover with bungee cords or zip ties so it doesn\u2019t blow away.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Place a piece of plywood and a brick on top if you\u2019re worried about icicles or heavy snow falling from above.<\/span><\/li>\r\n<\/ul>\r\n<span style=\"font-weight: 400;\">Some homeowners skip the cover altogether in mild climates, but it\u2019s a smart idea if your winters are cold, snowy, or windy.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Insulate the Refrigerant Lines<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Your AC\u2019s copper refrigerant lines (running from the condenser to your house) should already be insulated. But the foam insulation can crack or wear down over time.<\/span>\r\n<ol>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspect the line set for missing or brittle insulation.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replace any damaged insulation with foam pipe wrap or rubber tubing.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use weatherproof tape or zip ties to hold it in place.<\/span><\/li>\r\n<\/ol>\r\n<span style=\"font-weight: 400;\">Protecting these lines prevents energy loss and helps avoid freezing in extreme cold.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Clean or Replace the Air Filter<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Even though your AC won\u2019t be running during winter, it\u2019s a good idea to check and replace your HVAC filter now. Many heating systems use the same ductwork and blower as your AC, so airflow remains a shared responsibility.<\/span>\r\n<ol>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove the current filter and hold it up to the light.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If light doesn\u2019t pass through or if it\u2019s visibly dusty, it\u2019s time for a new one.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use the correct size and MERV rating for your system.<\/span><\/li>\r\n<\/ol>\r\n<span style=\"font-weight: 400;\">Changing the filter improves airflow, energy efficiency, and indoor air quality during the heating season.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Inspect the Indoor Parts<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Your AC's indoor components may not be outside in the cold, but they still need some seasonal care. Take a few minutes to:<\/span>\r\n<ol>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wipe down the air handler or furnace cabinet exterior.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vacuum around the base to remove dust and debris.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the drain line or condensate pan for algae or clogs.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspect blower motor wiring and look for signs of overheating or loose connections.<\/span><\/li>\r\n<\/ol>\r\n<span style=\"font-weight: 400;\">If you have a smart thermostat, you may also want to update settings for heating season or program a new schedule to match your winter lifestyle.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Secure the Area Around Your AC<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Winter storms can blow branches, leaves, and other debris into your unit. Keep the area around your condenser clear.<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Trim nearby branches that could drop leaves, snow, or sap.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove or relocate lawn furniture that might get blown into the unit.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid placing snow shovels, salt bags, or equipment near the AC.<\/span><\/li>\r\n<\/ul>\r\n<span style=\"font-weight: 400;\">A clean, open space around your AC prevents damage and makes it easier to access when it\u2019s time to uncover it in spring.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Make a Spring Reminder<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">Once you\u2019ve completed your winter prep, set a reminder for spring to uncover and inspect your AC before turning it back on.<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Add a calendar event or phone reminder for the first warm week of the season.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Include notes like \u201cRemove AC cover,\u201d \u201cTurn power back on,\u201d and \u201cInspect drain line.\u201d<\/span><\/li>\r\n<\/ul>\r\n<span style=\"font-weight: 400;\">You\u2019ll thank yourself later when you're not scrambling to remember what was covered or disconnected.<\/span>\r\n<h2><span style=\"font-weight: 400;\">Where To Find Us\u00a0<\/span><\/h2>\r\n<span style=\"font-weight: 400;\">If you need any replacement parts for your appliances, you can enter your<\/span><a href=\"https:\/\/www.appliancepartspros.com\/b\/how-to-find-your-appliances-model-number\/\"> <b>model number<\/b><\/a><span style=\"font-weight: 400;\"> at<\/span><a href=\"https:\/\/www.appliancepartspros.com\/\"> <b>AppliancePartsPros.com<\/b><\/a><span style=\"font-weight: 400;\"> to locate and order them quickly. Most orders arrive in just two business days, and we have tons of great information in our<\/span><a href=\"https:\/\/www.appliancepartspros.com\/repair-help\/\"> <b>repair help section<\/b><\/a><span style=\"font-weight: 400;\"> and<\/span><a href=\"https:\/\/www.youtube.com\/@appliancepartspros\"> <b>YouTube videos<\/b><\/a><span style=\"font-weight: 400;\"> to help you troubleshoot.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Stay connected with the latest DIY tips, tutorial videos, and repair guides by following us on <\/span><a href=\"https:\/\/www.facebook.com\/appliancepartspros\"><b>Facebook<\/b><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/instagram.com\/appliancepartspros?igshid=OGQ5ZDc2ODk2ZA==\"><b>Instagram<\/b><\/a><span style=\"font-weight: 400;\">, and <\/span><a href=\"https:\/\/twitter.com\/applpartspros\"><b>Twitter<\/b><\/a><span style=\"font-weight: 400;\">. We love hearing about your repair stories and successes. If you need more help or want personalized guidance, feel free to reach out. We\u2019re ready to help you take on your next project with confidence!<\/span>\n\n<em><span style=\"font-weight: 400;\">The information in this article may not apply to your specific appliance model.\n\n<div id=\"app-safety-notes\" style=\"border:1px solid #E6E6E6;border-radius:8px;overflow:hidden;margin:22px 0;font-family:system-ui,-apple-system,sans-serif\"><div style=\"background:#1C437C;color:#fff;padding:9px 16px;font-weight:700;font-size:15px\">\u26a1&nbsp;Electrical safety \u2014 before you start<\/div><ul style=\"margin:0;padding:14px 20px 14px 38px;font-size:15px;line-height:1.6;color:#1A1A1A;background:#fff\"><li style=\"margin:6px 0\"><b>Disconnect power<\/b> before you start \u2014 unplug it or switch off the breaker, and <b>confirm it's dead<\/b>.<\/li><li style=\"margin:6px 0\">Follow your <b>local electrical code<\/b>.<\/li><li style=\"margin:6px 0\">Anything involving <b>household wiring, outlets, or the breaker panel<\/b> itself is <b>licensed-electrician territory<\/b>.<\/li><\/ul><\/div>\n[\/av_textblock]\r\n\r\n[av_blog blog_type='posts' categories='16' link='category' blog_style='blog-grid' content_length='content' contents='title_read_more' date_filter='' date_filter_start='' date_filter_end='' date_filter_format='yy\/mm\/dd' offset='0' conditional='' bloglist_width='' columns='3' preview_mode='auto' image_size='portfolio' items='3' paginate='yes' lazy_loading='disabled' alb_description='' id='' custom_class='' av_uid='av-mcmedxlj']\r\n\r\n[av_social_share title='Share this entry' buttons='' share_facebook='' share_twitter='' share_whatsapp='' share_pinterest='' share_reddit='' share_linkedin='' share_tumblr='' share_vk='' share_mail='' share_yelp='' yelp_link='https:\/\/www.yelp.com' style='' av-desktop-hide='' av-medium-hide='' av-small-hide='' av-mini-hide='' alb_description='' id='' custom_class='' av_uid='av-ufsq1r']\r\n\r\n","_aviaLayoutBuilder_active":"active","footnotes":""},"categories":[16,84],"tags":[12631,12638,12639,12635,12640,12636,12633,12637,12634,12632],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Preparing Your Central AC for Winter: A Comprehensive Checklist<\/title>\r\n<meta name=\"description\" content=\"Don\u2019t let winter damage your AC. 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