GB5 S | 3 Group

List Price: $19,970

In 2005, La Marzocco debuted the GB5 S as the first machine to incorporate PID temperature control features. Prior to this, machines would have inconsistent brewing temperatures as the machine hit a designated temp and then fell before rising again to match the set temperature, much like a home thermostat would do to keep the heat on. This innovation allowed baristas to have total control over the brewing temperature of their espresso, optimizing the extraction possibilities. This trailblazing technology has since been incorporated into all of La Marzocco’s products.

The GB5 espresso machine is also available as the GB5 X. With this model, each group head has an independent brew boiler. This feature enables baristas to tailor the temperature of each group head to match the recipe for a specific single-origin coffee, blend, or roast level.

Performs Best For

Mid to high-volume coffee shops searching for an espresso machine that delivers on consistency and quality through programmable features. Also, those who prefer the traditional aesthetics the GB5 S is known for.

Fresh Cup uses a scoring rubric to rate espresso machines on a variety of metrics. See our scoring rubric:

Program Sophistication Gauges how deep and precise a café’s espresso program can be on the machine, and how much barista training it demands. Level 1 covers capsule or batch-brew stations, while Level 5 delivers full pressure/flow profiling, integrated scales, data logging and IoT connectivity for competition-grade menus. Volume Capability Reflects the peak drinks-per-hour the machine can maintain without recovery issues. Scores run from under 30 drinks (Level 1, boutique bar) to 120+ drinks per hour (Level 5, drive-thru chains or stadium kiosks). Automation Support Measures how many routine tasks the machine handles on its own—dosing, flushing, milk steaming and self-cleaning. It spans fully manual levers (Level 1) up to bean-to-cup super-automatic sequences (Level 5). Extraction Control Rates the operator’s control over brewing variables. Entry levels lock in temperature and pump pressure; mid-levels add independent PIDs and programmable pre-infusion; Level 5 delivers full pressure/flow profiles with live data logging. Workflow & Ergonomics Assesses how the machine’s physical design speeds service and reduces fatigue. Higher scores denote low-profile bodies, cool-touch or auto-purge steam wands, intuitive UIs and other features that minimise repetitive strain. Tech & Connectivity Looks at the depth of digital features—from simple PID displays and shot timers (Level 2) up to Wi-Fi dashboards, cloud telemetry, open APIs and fleet-management suites (Level 5). Design Customization Captures how extensively the machine’s appearance and UI can be tailored. Level 1 models ship in a single finish; mid-range offers swappable colour panels or logo plates; Level 5 machines feature fully modular skins and deep UI-branding options.
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Noteable Features

PID Temperature Control

The original GB5 introduced the industry to PID control, giving baristas the power to fine-tune their espresso recipes with the added variable of temperature. Additionally, this feature ensures temperature stability throughout a busy day of service.

Volumetric and Auto Brew Ratio Configurations

Today, the GB5 S offers either Automatic Volumetric (AV) or Auto Brew Ratio (ABR) configurations, enhancing a barista’s barflow and control over the end cup in a high-volume cafe setting. Drip tray scales are built into the GB5 S for those who opt for the ABR configuration.

Piero Group Caps

La Marzocco’s Piero Group Caps are built into the GB5 S to promote accurate thermal stability in conjunction with the volumetric capabilities of the machine.

Timeless Design

The GB5 S has La Marzocco’s iconic Florentine lilies on the side panels, giving the machine a classic aesthetic.

All Specs

Height (in)21.4
Width (in)38
Depth (in)25
Weight (lbs)200
Voltage (VAC)208-240V, single phase, 60 hz
Wattage (min)4930
Wattage (max)7240
Steam Boiler Capacity (liters)5
Water Reservoir (liters)11

Featured Resources

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