Espresso Machine Maintenance That Extends Its Life
By the dialed team · 4 min read · Updated 2026-03-23
An espresso machine will either die young from neglect or outlive your car. The difference usually isn't the brand or the price tag. It's whether someone kept up with four unglamorous chores: backflushing, gasket swaps, descaling, and cleaning the shower screen.
None of this is hard, and the parts cost less than a bag of good beans. The expensive part is what happens when you skip them. Here's each job, how often it needs doing, and what neglect actually costs.
Backflush weekly with detergent, not just water
If your machine has a three-way solenoid valve, and most pump machines above entry level do, backflushing is the highest-leverage thing you can do for it. You lock a blind basket (one with no holes) into the portafilter, and the pump pushes water backward through the group and the valve, flushing out the coffee oils that collect where you cannot see them.
Water alone only rinses the surface. A small scoop of espresso machine detergent, run in short bursts of roughly 10 seconds on and 10 off for about five cycles, breaks down the oils that go rancid and eventually gum the valve solid. Backflush with detergent weekly if you pull shots daily, then run several clear-water cycles to rinse it out. One caution: if your machine has no three-way valve (common on entry-level models and most levers), skip the blind-basket backflush entirely. The pressure has nowhere to go, and you can stress the pump and seals.
Swap the group gasket about once a year
The group gasket is a rubber ring seated behind the shower screen, and it seals the portafilter tight against the group. Rubber hardens with heat and age. You will know yours is going when the handle has to rotate further and further past center to feel snug, or when water sprays out around the portafilter mid-shot.
Most home gaskets are spent around the 12-month mark. Replacing one is a five-minute job: pry the old ring out, clean the seat, and press the correctly sized new one in (thickness matters, so match the part to your group). Put it off and you end up cranking the handle hard enough to wear out the portafilter lugs, a far worse repair than swapping a cheap rubber ring.
Descale on your water's schedule, not the calendar's
Scale is the mineral crust that hard water leaves inside the boiler and the lines. It insulates the heating element, so the machine takes longer to reach temperature and fights to hold it steady, and it narrows the passages water flows through. How fast it builds depends almost entirely on your water. Soft, low-mineral water can let you go a year or more. Hard tap water can crust a boiler in a couple of months.
The honest fix is upstream. Brew with water in a sane hardness range (target roughly 50 to 100 ppm as calcium carbonate) and you will rarely need to descale at all. If you are already scaled up, use a descaler matched to your boiler metal, let it dwell, then flush thoroughly. Know the risk going in: aggressively descaling a badly neglected machine can dissolve scale that was quietly plugging a seam and turn it into a leak. Prevention is a lot cheaper than that surprise.
Pull and clean the shower screen
The shower screen is the perforated disc that spreads water evenly across the coffee puck. Grounds and oils clog its holes over time, and once water stops coming through evenly it channels through the puck, giving uneven, patchy shots no matter how carefully you dialed in the grind.
Wipe it with a cloth daily, and once a week (an easy add-on to your backflush) back out the screw, remove the screen, and soak it in the same detergent solution. Scrub the holes clear with a brush and check for pitting. A warped or permanently clogged screen is cheap to replace, so do not nurse a bad one along. Reinstall it and your extractions get noticeably more even.
Good questions
›Can I backflush any espresso machine?
Only if it has a three-way solenoid valve, which most pump machines above entry level do. If yours does not (common on entry-level machines and lever models), a blind-basket backflush has nowhere to release the pressure and can stress the pump and seals. Stick to cleaning the portafilter, basket, and shower screen instead.
›How do I know whether to descale or just fix my water?
If your machine is slow to heat, struggles to hold temperature, or flows weakly, scale is a likely cause and a descale is worth it. But the lasting fix is water: keep your hardness in a moderate range and you will rarely descale again. Test your water first so you are solving the real problem, not just treating the symptom.