Learning how to clean inside of coffee maker is essential for any coffee drinker. The inside of a coffee maker houses hidden areas where old coffee oils can stagnate. Over time, this buildup can make your coffee taste bitter and sour. A clean machine simply brews better coffee.
This guide provides a complete, step-by-step process. We will cover everything from daily upkeep to a deep monthly clean. You will need only a few common household items. Let’s get your machine brewing like new again.
How To Clean Inside Of Coffee Maker
A thorough internal cleaning addresses the parts you cannot see. This includes the water reservoir, the internal tubing, and the heating element. Mineral deposits from water, called scale, and oily coffee residue are the two main enemies. We will tackle them separately for the best results.
The following method is safe for most standard drip coffee makers. Always check your manufacturer’s manual first for specific advice. If you have a single-serve pod machine, espresso machine, or French press, the principles are similar but the steps may vary.
Supplies You Will Need For Cleaning
You likely have most of these items at home already. Gathering them before you start makes the process smoother.
- White vinegar or a commercial coffee maker descaler
- Fresh, clean water
- A new, clean paper filter or a reusable filter
- A soft-bristled brush (an old toothbrush works perfectly)
- Mild dish soap
- A soft cloth or sponge
- A small bowl of warm, soapy water
Step-By-Step Deep Cleaning Process
This process uses a vinegar solution to descale and sanitize. Plan to do this when you won’t need the coffee maker for a few hours. The vinegar smell will dissipate after a few brewing cycles with clean water.
Step 1: Prepare The Vinegar Solution
Start by emptying and rinsing the carafe and water reservoir. For a full pot, mix equal parts white vinegar and fresh water. For example, if your machine brews 12 cups, use 6 cups of vinegar and 6 cups of water. If your machine is very scaled, you can use a stronger ratio of two parts vinegar to one part water.
Step 2: Run A Brewing Cycle
Pour the vinegar-water solution into the reservoir. Place a clean paper filter in the basket. Put the empty carafe back on the warming plate. Start a full brewing cycle as you normally would. Let the entire solution run through the machine.
Step 3: Let The Solution Sit
This is a crucial step many people skip. After the cycle finishes, turn off the machine. Let the hot vinegar solution sit in the carafe and within the internal tubes for 15 to 30 minutes. This gives the acid time to break down the hard mineral scale.
Step 4: Complete The Rinsing Cycles
Discard the vinegar solution from the carafe. Rinse the carafe thoroughly. Fill the reservoir completely with fresh, clean water. Place a new clean paper filter in the basket. Run a full brewing cycle with just water. Discard this water. Repeat this rinsing process one more time to ensure all vinegar is gone. If you can still smell vinegar, run another water-only cycle.
Cleaning The Removable Parts
While the vinegar is working inside, you can clean the external components. These parts collect oils with every use and need regular attention.
The Carafe And Lid
Wash the carafe and lid in warm, soapy water after every use. For stubborn stains or oily film, make a paste with baking soda and a little water. Gently scrub the inside of the carafe with this paste, then rinse well. For glass carafes, you can also use a bottle brush to reach the bottom.
The Filter Basket And Permanent Filter
Remove the filter basket from the machine. If you use a permanent mesh filter, wash it with soap and water after each use. Use the soft-bristled brush to scrub the mesh and remove any trapped coffee grounds. Rinse the basket itself to clear any grounds or residue.
Addressing The Exterior And Warming Plate
Wipe down the outside of your coffee maker with a damp cloth. For the warming plate, ensure it is completely cool. Dampen a cloth with a mild vinegar solution and gently wipe the plate to remove any coffee spills or baked-on stains. Dry it with a clean cloth.
How To Clean Specific Internal Components
Some areas need a bit more focused attention. These spots are notorious for harboring mold or thick scale.
Cleaning The Water Reservoir
Even though vinegar runs through it, the reservoir can develop a slimy film. Unplug the machine and remove the reservoir if possible. Wash it in the sink with warm, soapy water. If it’s not removable, wipe it out thoroughly with a vinegar-dampened cloth, then with a water-dampened cloth. Let it air dry completely.
Descaling The Internal Tubes And Heating Element
The vinegar process described above is designed to descale these parts. If you have extremely hard water, you may need to repeat the vinegar cycle twice before the rinsing cycles. You’ll know it’s working when you see brownish flakes or debris in the carafe during the cleaning cycle.
Maintaining A Clean Coffee Maker
Regular maintenance prevents major buildup and makes deep cleaning easier. A little daily and weekly care goes a long way.
Daily And Weekly Habits
- Empty and rinse the carafe and filter basket after each use.
- Wipe down the exterior with a dry cloth to prevent dust accumulation.
- Once a week, run a cycle with just water to help flush out any loose particles.
- Always use fresh, cold water in the reservoir; never reuse water.
When To Perform A Deep Clean
The frequency depends on your water hardness and how often you brew. A good rule of thumb is to descale with vinegar every one to three months. If you notice your coffee brewing slower than usual, that’s a sign of scale buildup. If your coffee starts to taste off despite using fresh grounds, it’s time for a clean.
Alternative Cleaning Methods
While vinegar is effective and economical, some people dislike the smell. Here are other reliable options.
Using Lemon Juice As A Natural Cleaner
The citric acid in lemon juice also breaks down mineral scale. Use the juice of two lemons mixed with water to fill the reservoir. Run the brewing cycle, let it sit for 15 minutes, then run two cycles with clean water to rinse.
Commercial Coffee Machine Cleaners
These are formulated specifically for coffee makers and are often odor-free. Brands like Urnex or Dezcal are highly effective. Always follow the package instructions carefully, as they are more concentrated than vinegar.
Troubleshooting Common Cleaning Issues
Sometimes, you might encounter persistent problems. Here’s how to handle them.
Persistent Mold Or Mildew Smell
If a vinegar clean doesn’t remove a musty smell, try using a baking soda solution. Mix two tablespoons of baking soda into a full reservoir of water. Run a brewing cycle, let it sit for 30 minutes, then run two clear water cycles. Baking soda is a great deodorizer.
Extreme Mineral Buildup
For severe scale, you may need to use a commercial descaler or repeat the vinegar process two days in a row. Patience is key; don’t use abrasive scrubs inside the machine, as they can cause damage.
FAQ Section
How Often Should I Clean My Coffee Maker?
You should wipe down external parts daily. A full internal descaling and clean should be done every one to three months, depending on your water hardness and usage.
Can I Use Apple Cider Vinegar To Clean A Coffee Maker?
It’s not recommended. White vinegar is preferred because it is clear, odorless after rinsing, and has a consistent acetic acid content. Apple cider vinegar can leave a residue and a lingering scent.
What Is The Best Way To Clean A Keurig Or Single-Serve Machine?
The principle is similar: descale the internal tank and needles. Use a commercial descaler or a vinegar solution made for single-serve machines, as the tubes are narrower. Always run multiple rinse cycles.
Why Does My Coffee Still Taste Bad After Cleaning?
Old coffee oils can cling to plastic parts. Ensure you cleaned the reservoir and carafe thoroughly. Also, check that your coffee beans are fresh and your grinder is clean, as these are common culprits for bad taste.
Is It Safe To Run Vinegar Through My Coffee Machine?
Yes, for most standard models, it is safe. The mild acidity dissolves minerals without harming the internal components. The key is to rinse it out thoroughly with several cycles of fresh water afterwards to prevent any vinegar taste.
Keeping the inside of your coffee maker clean is a simple but vital task. It protects your investment and ensures every cup tastes its best. By incorporating these steps into your routine, you’ll enjoy fresher, cleaner coffee and extend the life of your appliance for years to come. Start your next cleaning session today—your morning self will thank you.