How often should you descale your coffee machine?

Every 2-3 months with moderately hard water. Monthly if your water is very hard. Most modern machines have a built-in descaling indicator.

Can you use white vinegar to descale?

It's advised against by all manufacturers. Vinegar can damage seals and leave a persistent taste. Use a specific descaler (citric acid or brand product).

Is grinder cleaning really necessary?

Yes. Coffee oils accumulate and go rancid, giving coffee a bitter, unpleasant taste. Monthly cleaning with cleaning granules (Urnex Grindz or equivalent) removes these residues.

My machine makes less foam than before, what should I do?

The milk circuit is likely clogged with dried milk residue. Run a cleaning cycle with a specific milk circuit product, or disassemble and soak the parts in hot soapy water.

Coffee Machine Maintenance: The Complete Guide 2026

Coffee Machine Maintenance: The Complete Guide

A well-maintained coffee machine produces better coffee and lasts longer. Neglect maintenance, and you'll get bitter coffee, failing pressure, and a broken machine after 3 years instead of 10. Here's everything you need to know. For descaling specifically, see our detailed guide.

🏠 Compact machine. If you're short on space, compact machines require the same maintenance in a smaller format. See our compact machines guide.

The Maintenance Schedule

Frequency	Action	Time
After each coffee	Automatic rinse (if available)	30 sec
Daily	Empty grounds container and drip tray	1 min
After each milk drink	Rinse milk circuit / steam wand	1 min
Weekly	Full cleaning (cleaning tablet)	10 min
Monthly	Grinder cleaning (granules)	5 min
Every 2-3 months	Full descaling	30 min
Every 6 months	Water filter replacement	2 min
Yearly	Seal replacement (semi-auto)	15 min

1. Descaling: The Most Important Maintenance

Why it's crucial

Limescale accumulates in your machine's water circuits. Consequences:

Temperature drop: water no longer heats properly
Pressure drop: coffee flows slowly or not at all
Abnormal noise: the pump strains to push water
Breakdown: limescale eventually blocks the pipes

How to descale

Recommended products:

🛒 De'Longhi EcoDecalk descaler — For De'Longhi machines
🛒 Jura descaler — For Jura machines
🛒 Food-grade citric acid — Universal, economical

General procedure:

Empty the water tank and remove the water filter
Dissolve the descaler in warm water (follow manufacturer's dosage)
Fill the tank with the solution
Start the descaling program (most machines have one)
Let the solution circulate through the entire circuit
Rinse twice with clear water to remove all residue

NEVER use white vinegar. It damages silicone seals and leaves a persistent taste that even multiple rinses can't eliminate. Automatic bean-to-cup machines require specific care: discover our bean-to-cup machine maintenance guide.

Water hardness: test yours

Descaling frequency depends on your water hardness:

Hardness	TH	Descaling Frequency
Soft	Less than 15	Every 4-6 months
Medium	15-25	Every 2-3 months
Hard	25-35	Every 1-2 months
Very hard	More than 35	Monthly + water filter

Tip: Use a filter pitcher or your machine's built-in filter to reduce limescale at the source.

2. Milk Circuit Cleaning

If you prepare cappuccinos, lattes, or other milk-based drinks, milk circuit cleaning is non-negotiable. Residual milk is a breeding ground for bacteria.

After each milk drink

Steam wand: purge steam for 2 seconds, wipe with a damp cloth
Automatic circuit: run the rinse cycle offered by the machine
Intake tube: rinse with clear water

Weekly — Deep cleaning

Disassemble all milk circuit parts (wand, tube, connectors)
Soak in hot water with a specific cleaner
Brush the parts with a fine brush
Rinse thoroughly with clear water
Dry before reassembling

Recommended products:

3. Brew Group Cleaning

The brew group (or brewing unit) is the heart of your machine.

Automatic machines (De'Longhi, Melitta, Philips)

Most have a removable group:

Remove the group (usually accessible via a side panel)
Rinse with clear water (no soap)
Dry and replace
Frequency: every week

Machines with fixed group (Jura, some Saeco)

Use cleaning tablets:

Insert the tablet in the designated compartment
Start the cleaning program
The machine does the rest

Recommended tablets:

🛒 Urnex Cafiza — Universal, used by pros
🛒 Jura Cleaning Tablets

4. Grinder Maintenance

Coffee's natural oils accumulate in the grinder over time. These oils go rancid and give coffee a bitter, unpleasant taste.

Monthly procedure

Empty the bean hopper
Insert cleaning granules (🛒 Urnex Grindz)
Grind the granules (run 2-3 blank coffees)
Add coffee beans and make 2 coffees to discard

Beans to avoid

Very dark roasts (like Italian Roast) are oily and gunk up the grinder faster. Flavored coffees (vanilla, caramel) also leave residue.

5. The Water Filter

Most high-end machines include a water filter. This filter:

Reduces limescale (fewer descaling cycles)
Filters chlorine (better taste)
Should be replaced every 2-3 months or 50 liters

Warning Signs

Symptom	Probable Cause	Action
Coffee flows slowly	Limescale or grind too fine	Descaling
Coffee too bitter	Dirty grinder	Grinder cleaning
Abnormal pump noise	Limescale in the pump	Urgent descaling
Weak milk foam	Dirty milk circuit	Milk circuit cleaning
Water leaks	Worn seals	Seal replacement
Unpleasant odor	Old grounds, milk residue	Complete cleaning

The Essential Maintenance Kit

Product	Use	Link
Citric acid	Descaling	🛒 Amazon
Cafiza tablets	Brew group	🛒 Amazon
Grindz granules	Grinder cleaning	🛒 Amazon
Milk cleaner	Milk circuit	🛒 Amazon

Annual maintenance cost: approximately €40-60. That's the price for your €350-1200 machine to last 10 years instead of 3.

Conclusion

Maintaining a coffee machine isn't complicated: 5 minutes per week and 30 minutes every 2-3 months is enough. The reward: consistently excellent coffee and a machine that lasts a decade. Ignore maintenance and you'll pay in breakdowns, bitter taste, and premature replacement. Need a reliable, easy-to-maintain machine? Here's our selection of best automatic coffee machines.

Treat your machine the way it treats your coffee: with care.