The paper towel trick for detecting energy loss
This is a trick that's becoming increasingly popular, and for good reason: it's as simple as it is effective. Take a paper towel (or a regular sheet of paper) and place it between the refrigerator door and the seal. Then close the door.
If the sheet slides or comes off easily, it means the seal is no longer completely airtight. As a result, warm air enters, cold air escapes, and the refrigerator has to work harder to compensate. This is far from ideal, both for your energy bill and for proper food preservation.
