Refrigerator door seals are an important component of the appliance that helps maintain the cold temperature inside. Over time, these seals can wear out and lose their effectiveness. To ensure your refrigerator door seals are working properly, periodically check for any signs of wear or damage. Look for cracks, tears, or gaps in the seal that could be letting cold air escape. One easy way to test the seal is to place a dollar bill between the seal and the refrigerator door and try to pull it out. If the bill slides out easily, it's time to replace the seal. Replacing door seals is a relatively simple DIY task that can help improve the efficiency of your refrigerator and save energy. You can purchase replacement seals from the manufacturer or an appliance repair store and install them yourself with some basic tools. By maintaining your refrigerator door seals, you can prolong the life of your appliance and keep it running efficiently for years to come.