An espresso machine maintenance schedule you will actually keep

Espresso machines are simple mechanically and unforgiving chemically. Almost every failure that is not an electronic fault traces back to one of three things: scale, coffee oil, or a perished seal. All three are on a schedule, which means all three are avoidable.

Here is the whole schedule. It is shorter than most people expect.

Daily — two minutes

• Purge the steam wand before and after every use, and wipe it while it is still hot. Milk that dries inside a wand tip is the hardest deposit on the machine to remove.
• Wipe the group and knock the puck out rather than leaving it in the portafilter overnight. A puck left in place bakes onto the basket and the gasket.
• Empty the drip tray. Standing water is where smells start.
• Water-only backflush on machines that have a three-way valve.

Weekly — ten minutes

• Detergent backflush on three-way-valve machines. Rinse until the drain runs clear.
• Soak the portafilter and baskets in a detergent solution — but keep the plastic handle out of the water and never soak the spring.
• Brush the shower screen properly, with the portafilter out.
• Wipe under the drip tray and check the drain is clear.

Every three months — half an hour

• Descale, if your water hardness says it is due. This is the item people skip, and it is the one that eventually kills machines. How to decide the interval.
• Take the shower screen off and inspect it. Holes that stay dark after cleaning mean the screen has done its time.
• Check the group gasket. If the portafilter has crept noticeably further round than it did when new, the gasket is compressing and is close to due.
• Replace the water filter cartridge if you use one.

Once a year — an hour

• Replace the group gasket. It is a cheap part that hardens on a predictable schedule, and a hardened one causes leaks that look like much more expensive faults.
• Replace the shower screen if you have not already.
• Strip and brush the grinder burrs. How to do it without damaging anything.
• Look inside the water tank for biofilm, and clean it if there is any.
• Check the drain hose for a partial blockage — a slow drain is an early sign.

The order of importance

If you can only keep part of this, keep it in this order:

1. Descaling on the right interval. Nothing else on the list can kill the machine.

2. The daily steam wand purge and wipe. Cheap to do, expensive to reverse.

3. The weekly detergent backflush. This is the taste one.

4. Annual gasket and screen. Cheap parts, big effect on how the machine feels.

Everything below that is polish.

What a serviced machine is worth

Second-hand and refurbished espresso machines are a real market, and maintenance history is most of what separates a good buy from a bad one. We track refurbished and open-box listings alongside new ones — they appear as their own categories in our index, and they behave differently on price. A machine with documented descaling history is worth meaningfully more than an identical one without, and that difference is entirely down to the list above.