Common Mistakes New Espresso Machine Owners Make in Setup and Care

Skipping Descaling and Regular Cleaning

The most common mistake is treating the espresso machine like a drip coffee maker that never needs maintenance. Scale from hard water builds up inside the boiler and heating element, reducing efficiency and eventually causing failures. The Specialty Coffee Association maintains standards for espresso machine performance, and a well-maintained machine is more likely to perform within those guidelines. Breville, a major appliance maker, sells dedicated descaling solutions and cleaning tablets to prevent buildup, which is a sign of how important regular maintenance is even for consumer machines.

Avoid this mistake by checking your manual for a descaling schedule. Many machines have a descaling indicator, but even without one, a monthly descaling routine is a reasonable rule of thumb. The frequency also depends on how often you use the machine and the hardness of your water. Hard water requires more frequent descaling, while filtered water might extend the interval. Learn more in our guide on descaling frequency and what happens if you never descale.

Using the Wrong Water

Water composition affects both taste and the machine's health. Hard water with high mineral content causes scale, while soft or distilled water can leach minerals from metal parts and taste flat. The National Coffee Association notes that the brewing process impacts quality and flavor as much as the variety and roast, so water is part of that equation. A good starting point is filtered tap water with moderate hardness, but the ideal depends on your local supply.

Test your water hardness at home to know what you are dealing with. You can use a simple test strip or a more precise meter. If your water is very hard, consider a machine with a built-in water filter or use bottled water with a mineral profile suited to espresso. Alternatively, you can install a water softener under your sink. See how to test water hardness and whether you can use tap water.

Poor Placement: Clearance, Stability, and Heat

Where you put the machine matters almost as much as how you use it. Many owners tuck the machine into a tight corner with no room for the water tank to come out, or place it on an uneven surface that makes the machine rock. Countertop heat can build up if the machine has no ventilation, and steam from the wand can damage cabinets if clearance is too small.

Give the machine at least a few inches of space on all sides, keep it on a level, sturdy surface, and avoid placing it directly under low-hanging cabinets. The water tank should be easily accessible for refilling, and the steam wand should have room to move freely. Consider the heat output: machines with boilers radiate heat, so leave space for air to circulate. Read more about where to place your espresso machine and countertop heat damage.

Skipping the First-Run Rinse and Warm-Up

A brand-new machine needs a first-run rinse to clear any manufacturing residues, packaging dust, or test fluids. Many owners are so excited to pull the first shot that they skip this step, and then wonder why the coffee tastes odd. The National Coffee Association encourages experimenting and learning, but a clean start is essential. The first-run procedure typically involves running water through the group head and steam wand without coffee, and emptying the water tank.

Similarly, rushing the warm-up is a common mistake. Espresso machines need time to reach a stable temperature, and the ready light may not always indicate true thermal readiness. Let the machine heat for the time recommended in the manual, and consider flushing water through the group head before brewing. This is especially important for machines with large boilers, which take longer to stabilize. See first setup steps and why warm-up time matters.

Neglecting Daily Cleaning of Portafilter and Steam Wand

Coffee oils and milk residue are the enemies of good espresso. If you leave the portafilter loaded with a spent puck, the basket can clog and oils go rancid. Milk left on the steam wand forms a crust that is hard to remove and can harbor bacteria. Wiping the wand after every use and purging it with steam right after steaming keeps the tip clear.

A daily routine takes only a few minutes: knock out the puck, rinse the portafilter and basket, wipe the group head, and purge the steam wand. For deeper cleaning, backflush with a detergent as described in our backflushing guide and clean the portafilter and basket properly. Also, empty and rinse the drip tray regularly to prevent mold and odors. See also cleaning the steam wand.

Not Reading the Manual and Ignoring Warning Signs

One of the simplest mistakes is not reading the manual. The manual contains specific instructions for your model, including water hardness settings, descaling procedures, and troubleshooting tips. Many owners skip this step and then struggle with settings that are clearly explained. Reading the manual before your first use can prevent unnecessary errors and help you understand the machine's features.

Also, pay attention to warning signs like unusual noises, water leaking, or error lights. These often indicate a problem that can be fixed early. Addressing minor issues promptly can prevent costly repairs later. If your machine has a descaling indicator, don't ignore it. Follow the manufacturer's recommendations for maintenance. Learn more about reading the manual and common faults buyers worry about.

What to pick for your use

Questions

How often should I descale my espresso machine?

Follow the manufacturer's instructions, but the frequency depends on your water hardness and usage. If your machine has a descaling indicator, use it as a guide.

Can I use vinegar to descale?

Some owners use vinegar, but it may not be effective for all machines and can leave residue. Use a descaling solution recommended by the manufacturer.

What type of water should I use?

Filtered tap water with moderate hardness is a good start. Avoid distilled water, which can be corrosive, and very hard water, which causes scale. Test your water and adjust.

Why does my espresso taste bitter?

Bitterness often comes from over-extraction, stale beans, or a dirty machine. Regular cleaning and proper grind size help. Check your grind and clean the machine.

Should I leave my espresso machine on all day?

It depends on the machine and your usage. Many machines have eco mode. If you use it multiple times a day, leaving it on may save energy compared to repeated heating. If not, turn it off.