Empty and rinse the carafe and filter basket after each use

The fastest way to keep your OXO coffee maker clean is to empty it while it is still warm, right after you finish brewing. Remove the carafe from the warming plate and pour out any remaining coffee. Rinse the inside of the carafe with hot water and a soft sponge or cloth — do not use a dishwasher yet, because mineral buildup can hide inside.

Lift out the filter basket (the removable part that holds the paper or metal filter) and empty the used grounds into the trash. Rinse the basket under hot running water, rubbing the inside with your fingers to remove any coffee residue stuck to the mesh or ridges. This takes 30 seconds and prevents stale coffee oils from hardening inside the machine.

Key Takeaways

  • Rinse the carafe and filter basket with hot water when ready after brewing to prevent dried coffee oils from building up.
  • Run a vinegar and water mixture through a brew cycle once a month to dissolve mineral deposits that clog the spray head and slow brewing.
  • The carafe, filter basket, and lid are dishwasher-safe, but hand-washing them extends their life and prevents cloudiness.
  • If water sprays unevenly or drips slowly, mineral buildup is blocking the spray head — a vinegar cycle will restore normal flow.
  • Never soak the main machine body or spray head in water; only the removable parts should be submerged.

Run a vinegar and water cycle once a month to remove mineral buildup

Over time, minerals from tap water collect inside the heating chamber and spray head, slowing the brew and creating uneven water distribution. You will notice this when water stops spraying evenly across the grounds or when brewing takes longer than usual. A monthly vinegar cycle dissolves these deposits and takes about 10 minutes of active time.

Fill the water reservoir with a 1:1 mixture of white vinegar and water — use standard 5% distilled white vinegar from the grocery store. Place the carafe on the warming plate and start a brew cycle without any filter or grounds in the basket. Let the vinegar solution run through completely. The smell will be strong; this is normal. After the cycle finishes, empty the carafe and refill the reservoir with fresh water only. Run two full water-only brew cycles back to back to rinse out all vinegar residue. Your next pot of coffee should taste normal.

Wash the carafe and filter basket in the dishwasher or by hand

The carafe, filter basket, and lid are all dishwasher-safe and can go on the top rack. If you prefer hand-washing, use warm soapy water and a soft sponge. Avoid abrasive scrubbers or scouring pads, which can scratch the glass carafe or damage the plastic lid. Dry these parts with a soft cloth before putting them back, because water spots can form if they air-dry.

Hand-washing actually extends the life of the carafe — dishwashers can cause cloudiness on glass over time, especially if your water is hard. If your carafe has already become cloudy, soak it in a mixture of equal parts white vinegar and water for 30 minutes, then scrub gently with a soft brush and rinse well.

Clean the spray head and water reservoir when water flow slows

The spray head — the part at the top of the machine that distributes water over the grounds — can become clogged with mineral deposits even after a vinegar cycle. If water is dripping slowly or spraying only in one spot, the spray head needs attention. Do not try to poke holes or disassemble it; instead, run another vinegar cycle, this time letting the vinegar sit in the reservoir for 15 minutes before starting the brew. This gives the acid time to soften stubborn buildup.

If the spray head still does not spray evenly after a second vinegar cycle, fill a spray bottle with the vinegar and water mixture and spray it directly onto the spray head from above while the machine is unplugged and cool. Let it sit for 10 minutes, then wipe away the vinegar with a damp cloth. Plug the machine back in and run a water-only cycle to rinse.

Wipe down the exterior and warming plate

The outside of the machine and the warming plate collect dust and dried coffee splashes. Unplug the machine and let it cool for at least 15 minutes. Use a damp cloth to wipe the exterior plastic or stainless steel. For the warming plate, dampen a cloth with a little vinegar and water (1:1 ratio) and wipe away any brown stains or buildup. Do not pour water directly onto the plate or let liquid drip into the machine body.

If the warming plate has stubborn brown spots, let a vinegar-soaked cloth sit on top of it for 5 minutes, then wipe again. Dry the plate with a clean cloth before plugging the machine back in. Never submerge the machine body or any electrical parts in water.

Descale if you have very hard water or notice slow brewing

If you live in an area with hard water (high mineral content), you may need to descale more than once a month. Signs of heavy mineral buildup include brewing that takes noticeably longer than when the machine was new, water that sprays unevenly, or a chalky white or tan crust visible inside the water reservoir. Some people in hard-water areas descale every two weeks.

You can use a commercial coffee maker descaling solution instead of vinegar if you prefer — follow the product instructions, which are usually similar to the vinegar method. OXO does not make a branded descaling product, so any food-grade descaler designed for drip coffee makers will work. After using any descaler, always run at least two full water-only cycles to rinse thoroughly before brewing coffee again.

Frequently Asked Questions

Can I put the whole machine in the dishwasher?

No. Only the carafe, filter basket, and lid are dishwasher-safe. The machine body, heating element, and spray head must never be submerged. Hand-wash the carafe and basket, and wipe the machine body with a damp cloth only.

What if my coffee tastes bitter or stale even after cleaning?

Bitter taste usually means mineral buildup is affecting the water temperature or spray pattern. Run a vinegar cycle, then brew a test pot with fresh grounds. If the taste is still off, the carafe or filter basket may have old coffee oil residue — soak them in hot soapy water for 15 minutes, scrub with a soft brush, and rinse well.

How often should I descale if I use the machine every day?

Once a month is standard for most tap water. If your water is very hard (you can check with your local water utility), descale every two weeks. If you notice brewing slowing down before a month has passed, descale sooner — do not wait for the next scheduled cycle.

Is white vinegar safe to use in a coffee maker?

Yes. Food-grade white vinegar is safe and effective for descaling. Use standard 5% distilled white vinegar. Always run two full water-only cycles after a vinegar cycle to rinse completely before brewing coffee again.

What should I do if water leaks from the bottom of the machine?

First, make sure the carafe is seated properly on the warming plate and that the filter basket is fully inserted. If water still leaks, the machine may have a cracked internal seal — this usually cannot be repaired at home. Contact OXO customer service or consider replacing the machine.