A Gaggia Classic with a PID temperature controller on a home workbench

Guides & Articles

Hands-on guides, mod walkthroughs and reference articles for the Gaggia Classic family and beyond — written, photographed and tested on real machines.

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Gaggia Classic Pro

PIDs, OPV, models & maintenance

25 guides →

Open de stoomklep en start de pomp

What to buy first, what to skip

20 guides →

Coffee Theory

Water, temperature, beans & technique

8 guides →

Product Stories

How small parts earn their keep

2 guides →

Rancilio Silvia

PID, steam wand & valve rebuilds

1 guides →

Breville / Sage

Barista Express OPV & burr fixes

1 guides →

DeLonghi Dedica

Steam wand & dimmer pressure mods

1 guides →

La Pavoni

Lever care & overheating fixes

1 guides →

All Gaggia Classic Pro (25) Open de stoomklep en start de pomp (20) Coffee Theory (8) Product Stories (2) Rancilio Silvia (1) Breville / Sage (1) DeLonghi Dedica (1) La Pavoni (1)

Open Gaggia Classic Pro internal water path and wiring for no-flow diagnosis

Gaggia Classic Pro Open de stoomklep en start de pomp

Gaggia Classic Pro No Water From Group Head: Solenoid, Scale, or Pump?

The pump sounds alive. The steam wand works. The group head gives nothing. Very rude behavior from a metal box.

mei 3, 2026 Read More

Coffee Theory Gaggia Classic Pro Open de stoomklep en start de pomp

Why the Second Shot Often Tastes Better Than the First on a Gaggia Classic Pro

Many Gaggia Classic Pro owners notice that the second shot of the session often tastes better than the first. This guide explains…

april 29, 2026 Read More

PID-equipped espresso machine with a visible temperature display and pressure gauge

Coffee Theory Gaggia Classic Pro Open de stoomklep en start de pomp

How to Tell When Your Gaggia Classic Pro Is Ready for a PID Upgrade

A PID is not the right next step for every Gaggia Classic Pro owner. This guide explains when the upgrade starts to…

april 29, 2026 Read More

Gaggia Classic Pro in a warm kitchen setup

Coffee Theory Gaggia Classic Pro Open de stoomklep en start de pomp

A Simple PID Warm-Up Workflow for the Gaggia Classic Pro

A clear warm-up workflow helps Gaggia Classic Pro owners use a PID more effectively. This guide explains what to do before the…

april 29, 2026 Read More

Coffee Theory Gaggia Classic Pro Open de stoomklep en start de pomp

Why Temperature Stability Matters More Than Many Beginners Expect on the Gaggia Classic Pro

Temperature stability affects repeatability more than many Gaggia Classic Pro beginners expect. This guide explains why, what changes after a PID, and…

april 29, 2026 Read More