Reference guide · Updated on 2026-08-09 · Café en Casa Team

Coffee machine maintenance: descaling, cleaning and making it last years

Q: Is a drip coffee machine any good?

No, it is different: it gives a clean, long, mild coffee, ideal for several cups in a row. What sinks it is the jug sitting on a hotplate, which stews the coffee in twenty minutes. Look for models with a thermal carafe and a temperature of 92-96 °C, and you will have filter coffee on a par with a V60.

Q: Is it worth buying a separate grinder?

If you are going to use a non-pressurised portafilter, it is essential: a uniform grind contributes more to the result than moving up a machine range. With conical burrs from around 100-140 € you will already notice the difference. If your machine takes capsules or has a pressurised basket, you do not need it.

Q: How much should I spend on my first coffee machine?

For 100-150 € you get decent pressurised espresso; the value sweet spot for bean-to-cup machines sits between 400 and 600 €; and below 60 € a stovetop moka pot or an AeroPress makes better coffee than any electric machine at that price.

Q: Can you use supermarket ground coffee?

It works in pressurised and drip machines, but it is ground uniformly for one specific method and has usually been packaged for weeks or months. In a non-pressurised machine you will not get a correct espresso out of it.

Q: What budget do I need for descaling?

It depends on your use: there are valid options in the entry range and advanced models that only pay off if you are going to make the most of their features. Go through the criteria in this guide, define your real use and compare the current price on Amazon before deciding.

Limescale is the number one cause of breakdowns. Daily, weekly and monthly routines, how often to descale depending on water hardness and with what product.

Coffee machine maintenance: descaling, cleaning and making it last years

Capsules or beans: the real cost per cup

Here the numbers are clear. A closed-system capsule costs between 0,30 and 0,45 €; own-brand compatibles come down to 0,15-0,22 € but with uneven quality. A kilo of freshly roasted whole beans costs 15-25 € and yields around 55 double doses of 18 g, that is 0,10-0,15 € per cup. At two coffees a day, the annual difference is around 150-200 €: a 400 € bean-to-cup machine pays for itself in a little over two years against capsules. Capsules win on convenience, zero cleaning and zero learning curve; whole beans win on cost, freshness and quality ceiling.

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Steam wand: classic lance or automatic system

If you like cappuccino or flat white, this decides your purchase. The classic steam wand forces you to learn to texture the milk (create the vortex, not make bubbles) but gives café-quality microfoam and works with plant milks. The automatic systems systems such as LatteGo or a cappuccinatore handle the milk on their own, with no technique needed: the result is decent and very repeatable, but foamier and less creamy. One practical detail: LatteGo comes apart into two washable pieces, whereas milk circuits with internal tubing demand cleaning cycles and end up smelling if you neglect them.

Water hardness and descaling: what kills coffee machines

The number one cause of breakdowns is limescale, not use. Across much of the Mediterranean coast and central Spain the water exceeds 25-30 °fH, and at that hardness a machine without a filter needs descaling every 1-2 months; with soft water (<15 °fH) you can stretch it to 3-4 months. Use filtered water or bottled water with weak mineralisation (dry residue below 100 mg/l), set the hardness in the menu if the machine allows it, and do not ignore the descaling warning: once the heating element scales up, the water no longer reaches temperature and the coffee tastes thin long before the machine actually fails.

Bean-to-cup: what justifies the jump in price

Between a 300 € bean-to-cup machine and a 800 € one there are four real differences: the grinder (number of steps and whether it is steel or ceramic), the temperature and ratio control per drink, the milk circuit (removable and washable versus fixed) and the ease of maintenance (removable brew group or not). What does not justify the jump: big screens, the number of pre-programmed recipes and app connectivity, which almost nobody uses after the first month. If you make one or two milk drinks a day, the sweet spot is between 400 and 600 €.

Spares, warranty and lifespan

Before buying, check three things that decide whether the machine lasts you eight years or three: that there are spare seals and filters on sale, than the service network has a service network in Spain, and that the brew group is accessible to clean it. The brands with the best spare-parts availability on the Spanish market are De'Longhi, Philips/Saeco, Krups and Sage. The legal warranty in Spain is three years for products bought from 2022 onwards, and with coffee machines it pays to keep the receipt, because limescale damage is excluded if you cannot prove maintenance.

Mistakes that ruin coffee (and it is not the machine)

Five mistakes explain most bad coffee at home: using months-old ground coffee kept in the opened bag; very hard water or tap water with chlorine; do not warming the cup, which drops the temperature of the drink by 8 to 10 °C at a stroke; not purging the group head before extracting; and tamping with uneven pressure, which creates channels where the water escapes without extracting. None of them cost money to fix. Before changing machine, correct these five: in most cases the problem was never the appliance.

All Coffee Machine Maintenance articles (8)

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Frequently asked questions about descaling

Is a drip coffee machine any good?

No, it is different: it gives a clean, long, mild coffee, ideal for several cups in a row. What sinks it is the jug sitting on a hotplate, which stews the coffee in twenty minutes. Look for models with a thermal carafe and a temperature of 92-96 °C, and you will have filter coffee on a par with a V60.

Is it worth buying a separate grinder?

If you are going to use a non-pressurised portafilter, it is essential: a uniform grind contributes more to the result than moving up a machine range. With conical burrs from around 100-140 € you will already notice the difference. If your machine takes capsules or has a pressurised basket, you do not need it.

How much should I spend on my first coffee machine?

For 100-150 € you get decent pressurised espresso; the value sweet spot for bean-to-cup machines sits between 400 and 600 €; and below 60 € a stovetop moka pot or an AeroPress makes better coffee than any electric machine at that price.

Can you use supermarket ground coffee?

It works in pressurised and drip machines, but it is ground uniformly for one specific method and has usually been packaged for weeks or months. In a non-pressurised machine you will not get a correct espresso out of it.

What budget do I need for descaling?

It depends on your use: there are valid options in the entry range and advanced models that only pay off if you are going to make the most of their features. Go through the criteria in this guide, define your real use and compare the current price on Amazon before deciding.

Other guides from Mejor Café en Casa

Espresso machines Bean-to-cup machines Capsule machines Moka pot, AeroPress, V60 and Chemex Coffee grinders Whole beans Drip and office coffee machines

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