What happens if you don't descale your coffee machine?

Author: Dr. Melvin Murazik  |  Last update: Friday, March 6, 2026

If your machine is left alone without cleaning, that residue will have a few undesirable effects on your coffee: Your coffee will begin to taste bitter. Your coffee and coffee machine will produce an acrid smell. Coffee residue can cause clogging and blockages that can render a machine unusable.

Is descaling coffee machine necessary?

Descaling is an essential maintenance task for coffee machines, and here are a few reasons why it is necessary: Scale buildup: Over time, minerals such as calcium and magnesium in the water used for brewing coffee can accumulate inside the machine.

Is it bad to drink coffee from a machine that needs to be descaled?

Such products can safely come into contact with foodstuffs: even if some coffee machine descaler is left in the water system, it causes no harm to the human body and doesn't affect the flavour of your coffee.

Can I use a coffee machine without descaling?

You can ignore the descale light, and it'll continue to work... until it doesn't. Volume of coffee and taste will suffer as the scale builds up in the machine. Eventually it will stop working completely.

How do you know if your coffee machine needs descaling?

Here are a few signs you can look out for to help determine when it's time to descale your coffee maker: Cleaning indicator light comes on (only applies to select models). Excessive brew times. Gurgling or other unusual noises during the brew cycle.

Nespresso Vertuo Plus Descale Workaround - How to fix stuck red yellow light

Does coffee taste better after descaling?

So if it's been a while since you've descaled your coffee maker, or you've never descaled your machine, you're probably drinking coffee that is less flavorful and more tepid. And that's if your machine hasn't malfunctioned. Neither outlook is particularly good for you or your coffee.

Can I use vinegar to descale my coffee machine?

Although vinegar will help descale, it will also slowly erode the metal components in your coffee maker, especially those with aluminium tanks. Even worse, perhaps, any trace of vinegar which isn't flushed through will have a serious and adverse effect on the taste of your coffee.

How many times should you rinse coffee machine after descaling?

Once the descaling solution has gone through the machine, discard it, rinse your carafe with clean water, fill the reservoir, and run two more cycles like this.

Is descaling solution better than vinegar?

Effectiveness in Removing Mineral Build-Up

Designed for Coffee Machines: Commercial descaling solutions are specifically formulated to target and dissolve mineral deposits efficiently. Quick Action: These solutions often work faster than vinegar, requiring less soaking time to achieve optimal results.

What if you don't descale?

Consequences of Neglecting Descaling

Furthermore, scale can clog water flow lines, leading to increased strain on the pump and potentially causing it to fail. Over time, these issues can degrade the machine's efficiency, increase energy usage, lead to costly repairs, or even necessitate premature replacement.

Do I really need a coffee scale?

Trust me, it's worth it. Measuring beans and water probably isn't a part of your ideal morning routine, but it's a step with instant, delicious results. A coffee scale will change the way you brew coffee. Your brew will be tastier, more balanced, and reliably delicious every single morning.

How long does it take to descale a coffee machine?

The frequency of descaling depends on the hardness of the water in your region, so it's important to programme the Espresso Machine according to the water hardness level of your location. The descaling process runs in 4 phases, takes about 10 minutes and must be completed before the next use.

What is the best homemade descaler?

As we mentioned earlier, vinegar is one of the best natural descalers in your kitchen. Vinegar is very acidic that combats the limescale of your coffee appliance after regular brewing. Mix vinegar with warm water in a 1:1 ratio and run the brew cycle several times for cleaning.

Is it safe to drink coffee after descaling?

Drinking coffee after using a descaling solution is safe as long as you thoroughly rinse the machine afterwards. Run two to three cycles of fresh water through the coffee maker to flush out all traces of the descaling solution, ensuring your coffee is safe and free from residue.

Can I descale my coffee machine with baking soda?

If you don't have vinegar on hand but still want to clean your coffee maker with pantry products, reach for the baking soda. Mix one part baking soda with four parts water, and run it through the brew cycle as described above.

Why does my coffee taste funny after descaling?

If your coffee machine was not properly rinsed after descaling, coffee might taste acid. To rinse the machine, allow 2 full tanks to percolate through the hot water spout and the boiler outlet.

How many times should I run water after descaling?

When the descaling program has been completed, BREW and CLEAN turn off. Discard the cleaning solution and rinse the carafe thoroughly with clean water. Fill the water reservoir with a full carafe (12 cups) of clean, fresh water. Run the coffee maker through two complete brew cycles to flush the unit after descaling.

How much vinegar do you put in a 12 cup coffee maker to clean it?

ACV is more acidic than regular vinegar so it is much stronger to remove all the hard water, grime, and to descale your machine! Fill the coffee pot with half apple cider vinegar + half water. So, if your machine makes 12 cups - fill to the 6 cup mark with ACV and the rest with water.

How do I descale my coffee maker naturally?

Baking Soda Descaling Solution

All you need is baking soda and water to get the job done in a few simple steps: Remove the filter and pour warm water into the reservoir. Pour ¼ cup of baking soda into the reservoir and let it dissolve. Run a brewing cycle and discard the water in the pot when you're done.

How do you remove limescale from a coffee maker naturally?

Using citric acid: Citric acid is an effective alternative to vinegar cleaning solutions and can be used to descale a coffee machine. Dissolve a tablespoon of citric acid in a cup of water and run the coffee machine through a brew cycle. Rinse the machine with clean water to ensure all the citric acid is gone.

What is a good substitute for descaling solution?

It's time to clean your coffee maker, but you're all out of descaling tablets. If you need your coffee now, an at home remedy is as simple as using white vinegar and water to clean your coffee maker.

What is a natural descaler?

"The most commonly used product is white vinegar because you can find it in almost every home." Try filling your kettle with a mixture of one part white vinegar and one part water, totalling around 500ml. Bring the vinegar solution to the boil then, once it has finished boiling, leave it to sit for around an hour.

What is the best coffee descaler?

According to their test kitchen experts, Urnex Dezcal Descaling Powder Solution is the best choice for cleaning coffee makers. If you're still using vinegar to descale, America's Test Kitchen says you're doing it wrong, because it's not as effective and can actually be corrosive over time.

Previous article
How can I water my plants if I leave for 2 months?
Next article
Why is my paint rubbing off the wall?