How to Clean an Espresso Machine (2026)

A dirty espresso machine does not usually fail in a dramatic way. The coffee gets a little flatter. The steam wand spits. The group head starts looking greasy. You keep using it because the machine still turns on.

That is how residue builds up.

Coffee oils stick to the shower screen, group head, portafilter, and valves. Milk dries inside the steam wand. Minerals from the water collect in the boiler and water paths. Each problem needs a different kind of cleaning, and using the wrong product for the wrong job is how people make maintenance harder than it needs to be.

This is a practical schedule for home machines. It applies to common semi-automatic machines such as the Breville Bambino Plus, Barista Express, Gaggia Classic Pro, and Rancilio Silvia, with one important rule: your machine’s manual overrides this guide. Machines differ in cleaning cycles, descaling procedures, and whether the user should backflush them with detergent.

The short version

When	What to do	Product
After every shot	Purge and wipe the steam wand; rinse the basket; flush the group head	Water and a clean cloth
Daily	Empty the drip tray and water left in the group area	Water
Weekly	Brush the group head; clean the portafilter and basket; run a clear-water backflush if supported	Group brush
Every 2-4 weeks	Run the machine’s detergent cleaning cycle if the manual calls for one	Urnex Cafiza
Every 1-3 months	Clean the grinder chute and burr area	Brush or grinder cleaner
As directed	Descale the machine	Manufacturer-approved descaler or Urnex Dezcal
After milk use	Purge, wipe, and inspect the steam wand	Water and clean cloth

The schedule changes with use. A person making one shot a day does not need the same routine as a household making twelve milk drinks.

After every shot

1. Knock out the puck and rinse the basket

Empty the spent coffee into a knock box or bin. Rinse the portafilter basket with hot water. Coffee oils begin sticking to the basket almost immediately, and leaving wet grounds in it makes the next shot taste stale.

Do not leave the portafilter locked into the group head after brewing. It is fine to store it there once the basket is clean and dry, but a wet puck and warm metal make a good place for residue to sit.

2. Flush the group head

Run water through the group head for a few seconds after brewing. This clears loose grounds from the screen and the area above it. Breville describes a clear-water backflush as part of daily maintenance on the Barista Express.

Some machines use a three-way valve and support a proper backflush. Others do not. A short water flush is broadly safe, but the detergent cycle is machine-specific.

3. Purge and wipe the steam wand

Purge the wand before steaming if milk may have been drawn into the tip. After steaming, wipe the wand with a clean damp cloth while the milk is still wet, then purge again for a few seconds.

Do not wait until the end of the morning. Dried milk is much harder to remove and can block the holes in the steam tip.

4. Empty standing water

If the drip tray is filling, empty it. Do not let old coffee water sit in the tray for days. It smells, grows a film, and makes the machine area unpleasant even if the espresso is fine.

Weekly cleaning

Clean the group head and shower screen

Turn the machine off and let the metal cool enough to handle. Remove the portafilter and use a group brush around the gasket, shower screen, and the rim where coffee collects.

If the shower screen is visibly greasy or clogged, remove it only if your manual shows how. Keep track of the screw and the order of the parts. A photo before disassembly saves a surprising amount of frustration.

A 58mm group brush such as the ELESTAB brush is suited to many commercial-style group heads, but check your machine before buying. Breville’s 54mm machines and smaller groups may need a different brush shape.

Buy the ELESTAB 58mm Group Brush on Amazon →

Soak the portafilter and basket

Remove the basket from the portafilter and soak both in hot water. If plain water does not remove the film, use a small amount of espresso-machine detergent and rinse everything thoroughly afterward.

Do not soak a portafilter handle or parts with electronics. Keep detergent away from surfaces the manufacturer says not to immerse.

Run a clear-water backflush

If your machine supports backflushing, run a cycle with the blind basket and plain water. This moves water through the valve and group circuit without adding detergent.

Breville recommends a clear-water backflush after each brewing session for the Barista Express. Other manufacturers may specify weekly or different intervals. Use the procedure in your manual.

Detergent cleaning every 2-4 weeks

Detergent cleaning removes coffee oils and residue that water will not. Urnex Cafiza E31 tablets are made for traditional and superautomatic espresso machines. Urnex lists each tablet as 2 grams and 15mm in diameter.

For a traditional machine that supports detergent backflushing, the general Cafiza procedure is:

Put the blind filter in the portafilter.
Add one tablet, then lock the portafilter into the group head.
Run the brew cycle for about 10 seconds, stop for about 10 seconds, and repeat the manufacturer’s cycle.
Remove and rinse the portafilter.
Run a rinse cycle with no tablet.
Pull and discard a shot before making coffee.

That is the product’s general procedure, not a replacement for the machine manual. Some machines have a dedicated cleaning tablet cycle. Use that cycle if your machine provides one.

How often? Every two to four weeks is a reasonable starting point for regular home use. Darker roasts and heavier use leave more oil behind. If the manual specifies a different interval, follow it.

Buy Urnex Cafiza Cleaning Tablets on Amazon →

Descaling: when and how

Descaling removes mineral scale. It is a different job from detergent cleaning, and Cafiza will not do it.

The right interval depends on water hardness, how often you use the machine, whether you use filtered water, and the machine’s own instructions. Three to six months is a broad starting range for many home machines, not a rule. Some machines prompt you based on a water-hardness setting. Some manuals tell you to descale at a fixed interval.

Before you descale:

Read the manual for the exact procedure.
Check whether the manufacturer allows the owner to descale the machine.
Remove or bypass a water filter if the manual instructs you to.
Use the approved product and mix it at the specified concentration.
Make sure you have enough time to run the complete rinse cycle.

Urnex Dezcal is an activated scale remover sold in powder and packet formats. The four-packet Amazon version is convenient for occasional use, but the machine manual still decides whether it is appropriate.

Do not confuse a descale warning with a coffee-oil problem. A greasy group head needs detergent cleaning. A white mineral crust or a machine that is taking longer to heat may point to scale. They are separate maintenance jobs.

Buy Urnex Dezcal Four-Packets on Amazon →

Cleaning the grinder

The grinder is part of the espresso system. A clean machine with an oily, stale grinder still produces stale coffee.

Every few days

Brush loose grounds from the chute and the area around the burr carrier. If your grinder has a removable hopper, empty old beans before they sit for weeks. Do not put water into the burr chamber unless the manufacturer specifically allows it.

Every 1-3 months

Use the grinder’s manual to remove the upper burr or access the burr chamber. Brush out retained coffee and wipe the chute. The interval depends on how much coffee you grind and how dark the roast is.

Urnex Grindz tablets are made for cleaning residue and coffee particles from standalone grinders. They are not a substitute for opening and brushing the grinder when the manual calls for it, and they are not for superautomatic machines unless the manufacturer says otherwise.

Buy Urnex Grindz Grinder Cleaner on Amazon →

Cleaning milk equipment

Steam wands need cleaning after every use. Automatic milk systems need their own cleaning product and cycle.

If your machine has a manual wand, purge and wipe it after each drink. If milk has dried on the tip, remove the tip only according to the manual and soak the removable parts.

For automatic milk systems, Urnex Rinza is designed for milk-system cleaning. The tablets dissolve into a cleaning solution; liquid versions are also available. Follow the machine’s milk-system instructions and rinse the system thoroughly before making a drink.

Buy Urnex Rinza Milk Cleaning Tablets on Amazon →

What not to do

Do not use dish soap inside the hydraulic circuit. Use a product approved for espresso equipment.
Do not descale on a schedule without checking the manual. Water hardness and machine design change the answer.
Do not soak electrical parts, handles, or valves. Remove only the parts the manual identifies as removable.
Do not run Cafiza through a machine that does not support detergent backflushing. Check first.
Do not leave milk on the steam wand. It becomes harder to remove and can block the tip.
Do not assume a water filter eliminates descaling. It can reduce scale; it does not make every water supply scale-free.

The maintenance schedule I would use

For a normal home semi-automatic machine, I would do this:

After every drink: knock out the puck, rinse the basket, flush the group head, purge and wipe the steam wand.
Once a week: brush the group head, clean the basket and portafilter, and run a clear-water backflush if the machine supports it.
Every two to four weeks: run the machine’s detergent cleaning cycle, following the manual.
Every month or two: clean the grinder chute and inspect the burr area.
When the manual or machine says: descale. Use the specified procedure.

That is enough. Maintenance should be a short routine, not a second hobby.

FAQ

How often should I clean my espresso machine? Rinse the basket, flush the group head, and clean the steam wand after every drink. Brush the group head weekly. Run detergent cleaning according to the manual, often every two to four weeks for regular home use. Descale based on water hardness and the manufacturer’s instructions.

Is backflushing the same as descaling? No. Backflushing cleans coffee oils and residue from the group and valve circuit. Descaling removes mineral scale from the water path. They use different products and procedures.

Can I use vinegar to descale an espresso machine? Do not assume vinegar is safe. It can leave odor, and some manufacturers do not recommend it. Use the descaler and procedure specified for your machine.

Do I need Cafiza if I only make one espresso a day? Yes, eventually. Lower use may mean a longer interval, but coffee oils still accumulate. Check the manual and clean when the machine’s procedure calls for it.

How do I clean a steam wand? Purge it before and after steaming, wipe it immediately with a damp cloth, and inspect the tip regularly. Follow the manual before removing or soaking the tip.

Should I use water filters? A compatible filter can reduce minerals and improve taste, but it does not replace cleaning or necessarily eliminate descaling. Replace it on the schedule in the machine manual.

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