Coffee maker looking grungy? Add vinegar to the water reservoir until 1/4 full. Fill the reservoir with water until full. Run the coffee maker through its usual cycle (without a filter). Turn off the coffee maker and let it cool for about 10 minutes. Run the vinegar and water mixture through the coffee maker again. Let cool for another 10 minutes. Run plain water through the coffee maker; let cool for another 10 minutes. Hand-wash the carafe and filter basket in hot, soapy water. To learn more great tips contact MyGuy.