Run vinegar and water through the brew cycle to dissolve mineral buildup
Fill the water reservoir with equal parts white vinegar and water — a 1:1 ratio works best. Do not add coffee grounds or a filter. Turn on the machine and let it run through a full brew cycle, letting the vinegar solution drip into the carafe below. This acid cuts through the mineral deposits (called scale) that accumulate inside the heating element and tubes over time, which is what slows brewing and affects taste.
The entire cycle usually takes 5 to 10 minutes depending on your machine's size. You will smell vinegar strongly — this is normal and means the solution is working. Let the carafe cool for a few minutes before handling it.
Key Takeaways
- Mix equal parts white vinegar and water, fill the reservoir, and run a full brew cycle without coffee or a filter.
- Vinegar dissolves mineral scale that builds up inside the heating element and tubes, which slows brewing speed and affects coffee flavor.
- After the vinegar cycle, run two full cycles of plain water through the machine to rinse out all vinegar taste and smell.
- Clean your drip coffee maker with vinegar once every one to three months, depending on how hard your water is.
- If your machine has a removable spray head or showerhead, soak it in vinegar solution for 15 to 30 minutes to clear any clogged holes.
Rinse the machine thoroughly with plain water
After the vinegar cycle finishes, empty the carafe and refill the reservoir with plain water only. Run a full brew cycle to rinse the inside of the machine. Repeat this a second time with fresh water. Two rinse cycles remove most of the vinegar smell and taste that would otherwise linger in your next pot of coffee.
If you still detect vinegar after two cycles, run a third one. This is especially important if your machine is small or if you used a very strong vinegar solution. The goal is to smell only water when you open the top of the machine.
Clean the removable parts separately
While the machine is running its vinegar cycle, remove the carafe and the brew basket (the part that holds the filter and grounds). Wash both with warm soapy water and a soft sponge or cloth. Rinse them thoroughly under running water and set them aside to dry.
If your machine has a removable spray head or showerhead — the part at the top that distributes water over the grounds — soak it in the vinegar-and-water solution for 15 to 30 minutes. Use an old toothbrush or a small bottle brush to gently scrub any holes that look clogged or discolored. Rinse it well under running water before putting it back.
How often to clean with vinegar
The frequency depends on your water hardness. If you have soft water (low mineral content), cleaning once every three months is usually enough. If you have hard water (high mineral content), clean once a month or even every two to three weeks. You will notice the machine brewing more slowly than usual — this is the first sign that scale has built up and a vinegar cleaning is due.
Hard water is common in many regions, but you can check your water hardness with an inexpensive test strip from a hardware store or by calling your local water utility. They often provide this information for free.
Common mistakes to avoid
Do not use vinegar that is stronger than standard white vinegar (5 percent acidity). Cleaning vinegar or pickling vinegar is too strong and can damage the machine's internal seals and heating element. Stick with plain white vinegar from the grocery store.
Do not skip the rinse cycles. Running the machine with only vinegar and then when ready brewing coffee will result in vinegar-flavored coffee that is unpleasant. The two water rinses are not optional — they are part of the cleaning process.
Do not let vinegar sit in the machine overnight or for hours after the cycle finishes. Run the rinse cycles within an hour of finishing the vinegar cycle. Vinegar left sitting can corrode certain internal parts, especially in older machines.
Alternative cleaning methods
If you do not have vinegar on hand, a commercial coffee maker cleaning solution (like Cafiza or similar brands) works the same way: mix it with water according to the package directions, run it through a brew cycle, then rinse twice with plain water. These solutions are formulated specifically for coffee makers and work slightly faster than vinegar, though vinegar is cheaper and works just as well.
For light maintenance between vinegar cleanings, you can run a cycle with plain water only. This does not remove scale but helps flush out old coffee oils and residue that can affect flavor. Some people do this once a week or every other week.
Frequently Asked Questions
Can I use apple cider vinegar instead of white vinegar?
White vinegar is better because it is clear and leaves no residue. Apple cider vinegar contains sugars and other compounds that can leave a sticky film inside the machine. Stick with standard white vinegar from the grocery store.
What if my coffee maker has a built-in water filter?
Remove the filter before running the vinegar cycle. The vinegar can damage or degrade the filter material. After you finish rinsing the machine, replace it with a fresh filter before brewing coffee again.
How do I know if my machine needs cleaning?
The most obvious sign is slower brewing — water takes noticeably longer to drip through. You might also notice the coffee tastes flat or bitter, or the machine makes unusual sounds. Any of these means mineral scale has built up and a vinegar cleaning will help.
Can I clean the carafe in the dishwasher instead of by hand?
Yes, most glass carafes are dishwasher-safe. Check your machine's manual to be sure. Plastic carafes should be hand-washed to avoid warping. Either way, rinse the carafe well before putting it back on the machine after the vinegar cycle.
Will vinegar damage my coffee maker?
No, when used correctly. Standard white vinegar at a 1:1 ratio with water is safe for all drip coffee makers. The key is rinsing thoroughly afterward and not letting vinegar sit in the machine for hours. If you follow the steps in this guide, your machine will be fine.