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Gaggia ClassicPro / Evo / E24

Compare Classic Pro, Evo and E24 models, then check your exact machine before choosing a pressure mod.

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Gaggia Classic Pro E24 espresso machine, front three-quarter view

Where a Classic may need help.

The Pro, Evo and E24 have different pressure and boiler setups. Identify your version before choosing a mod.

OPV location inside a Gaggia Classic

The OPV comes first

Gaggia lists the U.S. E24 with a factory 9-bar OPV. Earlier Pro and Evo machines need a model-specific check before any spring change.

Next: Check whether a spring change is needed. Confirm the existing setting and valve layout before ordering.
Brew thermostat with two electrical terminals

Thermostat cycling

The stock thermostat can make repeat shots less predictable when your warm-up routine changes.

Option: Compare a PID kit after matching your machine code and mains voltage.
Gaggia Classic fitted with a custom control display

No pressure profiling

The stock switch does not give you a programmable pressure curve or repeatable preinfusion.

Mod: Plan a dimmer or Gaggiuino path when pressure profiling is the actual goal.

Four ways in.

Choose the part of the machine you want to work on: electrical, water path, daily handling, or maintenance.

Multimeter used to check espresso machine electrical parts

Electrical hard mods

PID, SSR, thermocouples, microcontrollers.

Explore →
Inside a Gaggia Classic with the boiler and water lines exposed

Pump and water path

Check the OPV layout and machine version before ordering pressure parts.

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Bottomless portafilter and milk pitcher beside a Gaggia Classic

Daily-touch upgrades

Bottomless portafilters, WDT, tampers, steam wands.

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Portafilter basket, group gasket and shower screen

Maintenance parts

Group gaskets, shower screens, O-rings.

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Where to begin.

Pick the part that solves a problem you have, then verify your exact Classic model before ordering.

Two tubes in a Gaggia Classic water-tank opening

OPV Spring Options

U.S. E24 is already 9 bar. Check the valve and tank tubes on older machines.

Check fit →
Example of a Shades of Coffee PID kit

PID Control Kit

Compare control scope, model fit and installation requirements before choosing a kit.

Compare kit →
Gaggia bottomless portafilter product view

Bottomless Portafilter

Gaggia includes an 18 g basket. Confirm the locking tabs fit your machine.

Read the fit guide →
Wood steam knob for Gaggia Classic

Wood Steam Knob

Check your steam valve and turning stops before ordering.

Read the workflow guide →

Further reading.

Reference pages and step-by-step install guides. Bookmark and come back.

Silvia vs Gaggia compareRead →Maintenance GuideRead →PID Kit & Installation PlanningRead →Gaggiuino Gen 3 PlannerRead →Deep Technical GuideRead →Upgrade Order by SymptomRead →PID Temperature ReferenceRead →First Shot ChecklistRead →Mod Safety + MultimeterRead →Compatibility GuideRead →Descaling SafelyRead →9-Bar OPV Compatibility by ModelRead →No Water From Group HeadDiagnose →Loud Pump, No WaterDiagnose →Solenoid Flow TestDiagnose →Weak Steam TroubleshootingDiagnose →Shower Screen Clogs After Every ShotDiagnose →When to Replace the Shower ScreenRead →Single vs Double BasketRead →Gaggia vs Silvia Buyer ComparisonCompare →107°C vs 145°C Thermostat DiagnosisDiagnose →Lock Position After a New GasketDiagnose →Portafilter That Won't LockDiagnose →Loud PumpDiagnose →Tripping the BreakerDiagnose →Leaking Steam Valve: Rebuild or ReplaceDiagnose →E24 Shots Inconsistent at the Same GrindDiagnose →Priming the PumpRead →Preheat TimeRead →PID Temperature SettingRead →Installing a 9-Bar OPV SpringRead →Pressurized vs Non-Pressurized BasketCompare →Puck Screen vs Shower ScreenCompare →Bambino Plus vs Classic E24Compare →

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