La Marzocco GB5 S 3 Group Commercial Espresso Machine

High-capacity 3-group commercial espresso machine combining classical European design with dual boilers, saturated groups, dual PID temperature control, and EE, AV, or ABR configuration options.

The La Marzocco GB5 S 3 Group is a premium professional commercial espresso machine designed for busy cafés, specialty coffee shops, restaurants, hotels, roasteries, and other high-volume coffee programs. Building on the GB5 line introduced in 2005, the second-generation GB5 S combines classical European styling with modern commercial espresso technology and a refreshed visual design.

The 3-group configuration provides increased brewing capacity and workspace for demanding service environments. Separate coffee and steam boilers optimize espresso brewing and steam production, while saturated groups provide excellent thermal stability from shot to shot. Dual PID controls allow the coffee and steam boiler temperatures to be electronically controlled for precise brewing and steaming performance.

The 3-group model features a 5-liter coffee boiler and an 11-liter steam boiler. A digital display provides intuitive access to machine parameters, while next-generation electronics allow control over boiler temperature, brewing volume, hot water tap dose, automatic cleaning cycles, and other machine functions.

The GB5 S 3 Group is available in EE (semi-automatic), AV (auto-volumetric), and ABR (auto brew ratio with scales) configurations. AV and ABR models feature programmable doses, Piero Group Caps, and dimmable barista lights, while the ABR configuration adds precision scales integrated into the drip tray with Drip Prediction technology.

Key Features

• Premium professional 3-group commercial espresso machine
• Available in EE, AV, and ABR configurations
• Three groups provide increased capacity for high-volume espresso service
• Dual boiler system separates espresso brewing and steam production
• Saturated groups provide excellent thermal stability shot after shot
• Dual PID control for coffee and steam boiler temperatures
• 5 L coffee boiler capacity
• 11 L steam boiler capacity
• Digital display with intuitive programming
• Programmable doses on AV and ABR configurations
• Piero Group Caps on AV and ABR configurations
• Dimmable 3-stage barista lights on AV and ABR configurations
• Integrated precision scales with Drip Prediction technology on ABR configuration
• Eco Mode with programmable standby operation
• Insulated boilers help reduce energy consumption and improve temperature stability
• Easy Rebuild Steam Valve can be serviced directly from the front of the machine
• Water sensor measures incoming water conductivity and hardness
• USB connectivity allows firmware updates
• La Marzocco Pro App compatible
• Special-order Pro Touch steam wands available
• Special-order cup warmer, high legs, and personalized colors available

Available Configurations

Specifications

Ideal Use Case

Ideal for high-volume cafés, specialty coffee shops, restaurants, hotels, bakeries, roasteries, and other demanding commercial coffee programs that require increased espresso production capacity, precise temperature control, and reliable steam performance. The 3-group configuration provides additional brewing positions and workspace for multiple baristas during busy service periods.

Design & Build

The second-generation GB5 S carries forward the character of the original GB5 line with classical European styling combined with modern commercial performance. Its updated visual identity modernizes the machine while maintaining its premium appearance and dynamic elegance. Two red lilies on the side shields reference La Marzocco's Florentine heritage, while the redesigned front panel improves visibility of the groups.

The 3-group model measures 38 inches wide, 25 inches deep, and 18.5 inches high, with a weight of approximately 200 lbs. It features a 5-liter coffee boiler and a separate 11-liter steam boiler, with a listed power range of 4930W to 7240W.

Separate boilers optimize espresso brewing and steam production, while Dual PID controls provide electronic temperature control for the coffee and steam boilers. Saturated groups help maintain thermal stability from shot to shot, and insulated boilers reduce energy consumption while contributing to temperature stability.

The GB5 S also incorporates an Easy Rebuild Steam Valve engineered so that it can be serviced directly from the front of the machine without removing the valve. A built-in water sensor measures the conductivity and hardness of incoming water, allowing operators to monitor water quality and verify filtration performance.

EE vs. AV vs. ABR Configuration

EE – Semi-Automatic: The EE configuration gives the barista manual control over espresso extraction. The barista starts and stops the shot using the machine controls, providing direct control over the desired coffee volume.

AV – Auto-Volumetric: The AV configuration features programmable doses that automatically control espresso volume. This helps improve repeatability and consistency, particularly in high-volume commercial environments.

ABR – Auto Brew Ratio with Scales: The ABR configuration adds precision scales built directly into the drip tray. Combined with Drip Prediction technology, the integrated scales provide an additional level of consistency through weight-based espresso preparation.

Configuration-Specific Features

Advanced Features

The GB5 S uses next-generation proprietary electronics to give the barista control over important operating parameters, including boiler temperature, brewing volume, hot water tap dose, automatic cleaning cycles, and other settings. The digital display provides an intuitive interface for adjusting machine parameters.

AV and ABR configurations also feature dimmable barista lights with three customizable intensity stages for Eco, On, and Brewing modes. Piero Group Caps on these configurations feature a re-engineered internal water path and flow-meter positioning designed to increase temperature stability.

Eco Mode can be programmed to place the machine into standby to improve energy efficiency, while USB connectivity allows firmware updates. The electronic board also provides connectivity with the La Marzocco Pro App.

Special Order Options

• Pro Touch Steam Wands – High-performance steam wands designed to remain cool to the touch
• Cup Warmer – Helps maintain espresso and cappuccino cups evenly heated at an appropriate temperature
• Personalized Colors – Custom colors available based on the RAL color system
• High Legs – Provides easier access beneath the machine

Why Buy From Omni

• Canadian-based supplier
• Fast shipping across Canada
• Commercial-grade espresso equipment
• Responsive customer support
• Competitive pricing

Frequently Asked Questions

How many groups does this GB5 S have?
This listing is specifically for the 3-group La Marzocco GB5 S.

What configurations are available?
The GB5 S 3 Group is available in EE (semi-automatic), AV (auto-volumetric), and ABR (auto brew ratio with scales) configurations.

What is the difference between EE, AV, and ABR?
EE provides manual start and stop control over espresso extraction. AV uses programmable volumetric doses for automatic shot control, while ABR adds integrated scales and Drip Prediction technology for weight-based espresso preparation.

Which configurations have programmable doses?
Programmable doses are available on the AV and ABR configurations.

Which configuration has integrated scales?
Integrated precision scales with Drip Prediction technology are exclusive to the ABR configuration.

Which configurations include barista lights?
Dimmable 3-stage barista lights are included on the AV and ABR configurations.

Does the GB5 S have separate coffee and steam boilers?
Yes. The 3-group model features a 5-liter coffee boiler and an 11-liter steam boiler.

Does the GB5 S have PID temperature control?
Yes. Dual PID controls allow electronic control of both coffee and steam boiler temperatures.

What are the dimensions of the 3-group GB5 S?
The machine measures approximately 38 inches wide, 25 inches deep, and 18.5 inches high.

How much does the 3-group GB5 S weigh?
The machine weighs approximately 200 lbs (91 kg).

What are the electrical options?
The brochure lists 200V single phase, 220V single or 3 phase, and 380V 3 phase. The 3-group model has a minimum wattage of 4930W and a maximum wattage of 7240W.

Does the GB5 S help monitor incoming water quality?
Yes. A built-in water sensor measures the conductivity and hardness of incoming water, helping operators monitor water quality and verify filtration performance.

Does the GB5 S have an energy-saving mode?
Yes. Eco Mode can be programmed to place the machine into standby to help improve energy efficiency.

Is the GB5 S compatible with the La Marzocco Pro App?
Yes. The electronic board provides connectivity with the La Marzocco Pro App.

What special-order options are available?
The brochure lists Pro Touch steam wands, a cup warmer, personalized RAL colors, and high legs as special-order options.

WARRANTY

• Manufacturer's warranty applies