# FAQ — Cleaning & Maintenance

**How often should I descale my espresso machine?**
It depends on your water hardness—I descale mine every 2-3 months, but if you have very hard water, you might need to monthly. The real indicator is if your machine takes noticeably longer to heat up or brew, or if you see scale buildup inside the group head. I use a water hardness test strip before deciding, since guessing wastes money on descaling solution.

**Why isn't my espresso machine heating up to temperature?**
Scale buildup is the most common culprit—mineral deposits clog the heating element and thermostat. Before assuming it's broken, run a descaling cycle with a commercial espresso machine descaler (citric acid or proprietary blends work well). If that doesn't help, check that your power switch is actually on and the machine has had 15-20 minutes to reach brew temperature. If neither works, you likely need a thermostat or heating element replacement.

**Can I use vinegar to descale my espresso machine?**
I don't recommend it, even though it's cheap. Vinegar leaves a residual smell that lingers in your machine and can flavor shots for weeks. Dedicated espresso machine descalers (like Cafiza or Dripkit) are formulated to dissolve scale without the odor problem, and they're only a few dollars more. If you're already past the point of regretting vinegar, run multiple water-only cycles to flush it out.

**How do I clean my burr grinder without taking it apart?**
Honestly, you can't do a deep clean without disassembly—coffee oils build up between the burrs and affect grind consistency over time. Most grinders have removable upper or lower burr sets; consult your manual for the specific steps. I use a small brush to sweep loose grounds from the chute monthly, and do a full burr cleaning every 3-4 months depending on how much I'm grinding.

**What's the best way to clean espresso machine portafilter and basket?**
After each shot, knock out the puck and rinse the basket under hot water immediately—dried espresso is harder to remove later. Once a day, soak them in a backflush solution (water with a bit of espresso machine cleaner) for 10-15 minutes, then scrub with a soft brush. For weekly deep cleaning, use a blind basket (no holes) with cleaner and run backflush cycles through the group head to clear internal buildup.

**Why is my grinder producing inconsistent particle sizes?**
Uneven grind usually means either your burrs need cleaning (oil and fines accumulate between them) or the burrs themselves are worn. If cleaning doesn't help, the burrs are likely past their lifespan—most home grinders need new burrs every 1-2 years depending on volume. Also check that your grinder isn't on an uneven surface, since vibration during grinding can affect consistency.

**My espresso machine is leaking from the group head—is it fixable?**
Small leaks are often just a worn shower screen or group head gasket, both are inexpensive replacements you can do yourself. Turn off the machine, unscrew the shower screen, and inspect the rubber gasket underneath for cracks or hardening. If it looks dried out or cracked, swap it for a new one (they're usually under $10). If the leak continues after that, you might have a cracked group head, which requires professional repair.

**How do I know when to replace my espresso machine's water filter?**
If your machine has a built-in filter cartridge, follow the manufacturer's recommendation—usually every 2-3 months or after filtering 300+ gallons of water. You'll also notice when it needs replacing: water starts flowing slower through the group head, or descaling becomes necessary more frequently. I keep a spare on hand because a clogged filter mimics scale buildup symptoms, and it's easier to rule out by swapping it out.

**Can I run backflush on a machine without a 3-way solenoid valve?**
No—backflushing requires a solenoid valve to rapidly release and cut water pressure, which single-boiler machines without this valve can't do. Attempting it risks damaging your group head or pump. Instead, focus on manual cleaning with a blind basket and cleaner solution, or use a group head brush to clear the shower screen regularly.

**My grinder chute is clogged with old coffee—what's the safe way to clear it?**
Turn the grinder completely off and unplug it before doing anything. Use a dry brush (not water) to gently loosen dried grounds from the chute walls—never stick anything into the burr chamber. If it's really stuck, you can remove the upper burr assembly (check your manual) and clean the chute directly. For prevention, run a few empty grinding cycles after each session to push out residual fines.