Keep your coffee tasting great and your machine running reliably by cleaning it little-and-often. This guide covers daily, weekly, monthly, and deep-clean routines for the most common bean-to-cup, pod, and espresso machines, plus milk system hygiene, descaling, and the mistakes that cause breakdowns.

Bean-to-cup (fully automatic)

• Built-in grinder + brew unit / infuser
  
• Often has automatic rinse + cleaning programs
  
• Usually needs: brew-unit cleaning, milk cleaning, descale (or water filter)
  

Espresso (manual/semi-auto)

• Portafilter + group head + steam wand
  
• Needs: backflushing (if 3-way valve), group-head cleaning, steam wand cleaning, descale
  

Pod machines (Nespresso / Dolce Gusto / Tassimo)

• Lower maintenance, but still needs: descale, drip tray clean, needle/adapter clean, water tank hygiene

• Run the machine’s rinse cycle (if available)
  
• Empty and rinse:
  Drip tray
  Dreg/grounds box
  
• Rinse and refill water tank (don’t “top up forever”)
  
• Wipe:
  Coffee spouts
  Machine front + drip area
• If you use milk:
  Run the milk rinse/clean immediately after every milk drink
  Wipe milk outlet and any milk tube ends

Bean-to-cup:

Run cleaning tablet program (if the machine supports it)
Remove and rinse brew unit (if removable) and wipe brew chamber area

Espresso:
Clean group head + shower screen area
Clean portafilter basket and spouts

All machines:
Wash water tank with warm soapy water, rinse well
Clean hopper lid area and wipe oils/dust

• Inspect and clean:
  Grinder chute area (dry brush only)
  Coffee outlets (remove and rinse if detachable)
  Seals and O-rings (look for cracks, flattening)
• Deep-clean milk system (even if you do daily rinses)
  

Every 2–3 months (or when prompted)

• Descale, unless you use a water filter and your machine is set up correctly for it

Brew Unit / Infuser (if removable)

• Remove brew unit (follow machine prompt or manual)
  
• Rinse under warm water (no detergent unless manual allows)
  
• Let it air dry
  
• Wipe inside the brew chamber:
  Loose grounds
  Dried coffee residue around the seals
• Refit and run a rinse cycle
  Don’t do this:
• Don’t put brew units in dishwashers unless explicitly stated by the manufacturer
  
• Don’t grease randomly—only use food-safe grease if the manual recommends it
  

Cleaning Tablet Program

• Use the machine’s “Clean” / “Tablet” cycle
  
• Tablet goes into:
  Bypass doser chute or
  Brew unit chamber (depends on model)
  
• Let the full cycle complete (don’t stop halfway)
  

What this removes:

• Coffee oils and internal residue that cause bitter taste, slow extraction, and brew faults.
  

Milk systems fail when residue dries inside the lines.

After every milk drink

• Run the machine’s milk rinse (or flush steam wand)
  
• Wipe milk spout/wand immediately
  

Daily (if milk used)

• Use milk cleaner (liquid or tablet) as per instructions
  

• Clean:
  Milk tube
  Milk frother head
  Outlet spout parts (often detachable)
  
  Weekly deep clean

• Disassemble milk parts (frother, connectors, nozzles)
  
• Soak in milk cleaner solution
  
• Rinse thoroughly and reassemble
  

Signs your milk system needs cleaning now:

• Weak foam
  
• Sputtering milk
  
• Sour smell
  
• “Milk not dispensing” / “Milk system blocked” errors

Group Head (daily)

• Flush hot water through group head
  
• Wipe the gasket area with a group brush
  
• Rinse portafilter and baskets
  

Backflush (if your machine supports it)

• Use a blind basket
  
• Run short on/off pulses
  
• Use espresso machine detergent periodically (weekly for frequent use)
  

Steam wand (after every use)

• Purge steam for 1–2 seconds
  
• Wipe wand with a damp cloth
  
• If blocked: soak the tip in warm water, then clean holes carefully

Descaling removes limescale buildup caused by hard water (common in many UK areas).

When to descale

• Machine prompts you
  
• Slow flow / low pressure
  
• Temperature instability
  
• Noisy pump
  
• Increased warm-up time
  

How to descale safely

• Use a proper coffee machine descaler
  
• Follow the exact program steps on your machine
  
• Always rinse thoroughly afterwards (often 1–2 full tanks)
  

Important:

• If you use a water filter, ensure the machine is set to “filter installed” in settings—otherwise it may still prompt descale unnecessarily.

For most homes, this covers everything:

• Cleaning tablets (brew system / coffee oils)
  
• Milk system cleaner (liquid/tablet)
  
• Descaler
  
• Microfibre cloths
  
• Soft brush (dry brush for grinder area)
  
• Group head brush (espresso machines)
  

Skipping milk cleaning (leads to blockages + hygiene risks)

Descaling too late (scale damages heating and flow systems)

Using vinegar (can damage seals, leaves taste/odour)

Cleaning the grinder with water (ruins burrs/motor)

Leaving water in tank for days (biofilm + smell)

Stopping cleaning cycles halfway (can lock programs / trigger faults)

Coffee tastes bitter

• Run cleaning tablet cycle
  
• Clean coffee spouts
  
• Check old beans/oily beans residue
  

Coffee is weak / watery

• Brew unit dirty
  
• Grinder set too coarse
  
• Scale restricting flow (descale)
  

Milk not foaming

• Milk system blocked
  
• Frother parts not cleaned/disassembled
  
• Milk too warm / wrong milk type

• Coffee machine not heating
• Coffee machine not dispensing
• Coffee machine not frothing milk
• Coffee machine leaking water
• Coffee machine error codes
• Coffee machine not pumping water
• Coffee machine water flow problems