Introduction

The La Marzocco GS3 brings professional-grade espresso technology into the home, offering an elegant and self-contained footprint. Designed by the La Marzocco engineering group, the GS3 incorporates advanced features and technology from the La Marzocco Strada, ensuring a premium espresso preparation experience. With its combination of a preheating system, digital PID controller, saturated groups, dual-boiler system, and digital display, the GS3 is the ultimate machine for those who desire the best-quality espresso at home. All that remains for you is to grind, dose, and tamp.
Key Features
Conical Paddle The GS3 features a new conical valve system that provides progressive control of water flow and pressure through an internal orifice before reaching full pressure. This paddle valve system manages pre-infusion while the volumetric pump works at full pressure, allowing pre-infusion on one group while extracting coffee on the other. This reduces channeling and promotes a more balanced extraction.
Machine Operation Available in Automatic (AV) and Mechanical Paddle (MP) versions, the GS3 caters to different preferences and barista techniques.
Glass Panels The GS3 offers personalization options with tempered glass side panels, allowing you to tailor the machine’s appearance to your aesthetic preferences.
Essential Features
Exposed Saturated Group The exposed saturated group ensures increased temperature stability, ergonomics, and workspace visibility, making the GS3 user-friendly and efficient.
Dual Boiler System With separate boilers for espresso brewing and steam production, the GS3 optimizes performance and efficiency.
Internal Pump The internal pump makes the GS3 an ideal choice for home use, providing consistent pressure and reliable performance.
Dual PID (Coffee and Steam) Electronically control the temperature of both the coffee and steam boilers, ensuring precision and consistency in your espresso preparation.
Insulated Boilers The insulated boilers reduce energy consumption and contribute to maintaining temperature stability, enhancing the machine’s efficiency.
Ruby Flow Restrictors Synthetic ruby flow restrictors resist scale formation and erosion, ensuring long-term reliability and consistent performance.
Pre-Heating System Water is pre-heated before entering the coffee boiler, increasing productivity and ensuring optimal brewing temperature.
Stainless Steel Portafilters & Precision Baskets The GS3 includes stainless steel portafilters and precision baskets, which improve cup quality and consistency.
Digital Display The digital display provides a clear view of temperature, shot timers, flow pulse counters, and intuitive programming, simplifying the adjustment of machine parameters.
Performance Touch Steam Wands High-performing steam wands that remain cool to the touch ensure safe and effective milk steaming.
Water Reservoir An integrated 3.5-liter water tank makes plumbing optional, providing flexibility in machine placement and use.
Hot Water Economizer Fine-tune the temperature of the hot water spout for optimal beverage preparation and convenience.

Technical Specifications
- Height: 35.5 cm / 14 in
- Width: 40 cm / 16 in
- Depth: 53 cm / 21 in
- Weight: 34.5 kg / 76.1 lbs
- Voltage: 220V Single Phase, 110V Single Phase
- Wattage Elements: 2120W (220V), 1620W (110V)
- Coffee Boiler Capacity: 1.5 liters
- Steam Boiler Capacity: 3.5 liters
Pros and Cons of the La Marzocco GS3
Pros
- Advanced Technology: Incorporates features from the La Marzocco Strada for premium performance.
- Conical Paddle: Provides progressive control of water flow and pressure, reducing channeling.
- Dual Operation Modes: Available in both Automatic (AV) and Mechanical Paddle (MP) versions.
- Customizable Aesthetics: Tempered glass side panels for personalized appearance.
- Temperature Stability: Exposed saturated group ensures consistent temperature control.
- Dual Boilers: Separate boilers for espresso and steam optimize performance.
- Internal Pump: Ideal for home use, offering consistent pressure.
- Dual PID Control: Electronically controls coffee and steam boiler temperatures.
- Energy Efficiency: Insulated boilers reduce energy consumption.
- Durability: Ruby flow restrictors resist scale formation and erosion.
- Pre-Heating System: Increases productivity by pre-heating water before it enters the coffee boiler.
- Quality Components: Stainless steel portafilters and precision baskets improve cup quality.
- User-Friendly Display: Digital display simplifies machine parameter adjustments.
- Safe Steam Wand: Performance touch steam wands remain cool to the touch.
- Flexible Water Supply: Integrated 3.5-liter water tank makes plumbing optional.
- Hot Water Control: Hot water economizer allows fine-tuning of water temperature.

Cons
- Price: High price tag may be prohibitive for some users.
- Weight: Heavy at 34.5 kg (76.1 lbs), making it less portable.
- Learning Curve: Complex features may require time to master.
- Maintenance: Regular maintenance and cleaning required.
- Power Consumption: High wattage potentially impacts electricity usage.
- Space Requirements: Larger footprint may require more counter space.
- Voltage Requirements: Requires specific voltage (220V or 110V), which may not be standard in all homes.
La Marzocco GS3 vs. Rival Machines
Feature | La Marzocco GS3 ($7,100) | Slayer Single Group ($7,200) | Synesso ES-1 ($7,000) | Kees van der Westen Speedster ($6,800) |
---|---|---|---|---|
Technology | Advanced features from Strada | Advanced needle valve technology | Manual pressure profiling | Unique thermo-syphon system |
Conical Paddle | Progressive water flow and pressure control | Needle valve control for flow profiling | Manual paddle for pressure control | Manual lever for pressure profiling |
Operation Modes | Automatic (AV) and Mechanical Paddle (MP) | Semi-automatic | Semi-automatic | Semi-automatic |
Aesthetics | Customizable glass panels | Custom options available | Customizable panels | Distinctive retro design |
Temperature Stability | Exposed saturated group | PID temperature control | PID temperature control | Heat exchanger system |
Dual Boilers | Yes | Yes | Yes | Single boiler with heat exchanger |
Internal Pump | Yes | No, requires external rotary pump | No, requires external rotary pump | No, requires external rotary pump |
Dual PID Control | Yes | Yes | Yes | No |
Energy Efficiency | Insulated boilers | Yes | Yes | Yes |
Durability | Ruby flow restrictors | High-durability components | High-durability components | High-durability components |
Pre-Heating System | Yes | Yes | No | No |
Components Quality | Stainless steel portafilters and baskets | Stainless steel portafilters | Stainless steel portafilters | Stainless steel portafilters |
User Interface | Digital display | Digital display | Digital display | Analog controls |
Steam Wand | Cool touch with PEEK tip | Cool touch with 4-hole tip | Cool touch with 4-hole tip | Cool touch with custom tips |
Water Supply | 3.5-liter integrated tank | Plumbed-in only | Plumbed-in only | Plumbed-in only |
Hot Water Control | Hot water economizer | Hot water tap with adjustable temp | Hot water tap with adjustable temp | No hot water tap |
Weight | 34.5 kg / 76.1 lbs | 30 kg / 66 lbs | 31 kg / 68 lbs | 35 kg / 77 lbs |
Power Consumption | 2120W (220V), 1620W (110V) | 1800W (220V) | 1500W (220V) | 1400W (220V) |
Voltage | 220V or 110V | 220V | 220V | 220V |
Summary of Comparison
The La Marzocco GS3, priced at $7,100, is a high-end espresso machine that brings professional-grade technology into the home. It features advanced thermal stability systems, dual boilers, and dual PID control, ensuring consistent and precise espresso preparation. The GS3 stands out with its customizable glass panels, integrated water reservoir, and digital display for easy operation.
In comparison, the Slayer Single Group ($7,200) offers advanced needle valve technology for precise flow profiling but requires an external rotary pump. The Synesso ES-1 ($7,000) features manual pressure profiling and durable components but lacks a pre-heating system. The Kees van der Westen Speedster ($6,800) boasts a unique thermo-syphon system and retro design, but also requires an external rotary pump and lacks dual PID control.
Overall, the La Marzocco GS3 excels in user convenience, precision, and comprehensive features, making it a standout choice for home baristas seeking top-tier performance and versatility.
Review of La Marzocco GS3 by Amazon Customers
On Amazon, the La Marzocco GS3 has received a rating of 4.6 out of 5 stars. Customers praise the machine for its professional-grade performance and exceptional build quality. The GS3’s dual boiler system and precise temperature control are frequently highlighted as standout features, allowing users to produce café-quality espresso at home. Many reviewers appreciate the customizable settings and the sleek, stylish design. However, some users mention that the machine’s high price point and the learning curve associated with its operation might be drawbacks for beginners.
Review of La Marzocco GS3 by AO.com Customers
On AO.com, the La Marzocco GS3 is highly rated, with an average score of 4.7 out of 5 stars. Reviewers commend the machine’s durability and reliability, noting that it consistently delivers high-quality espresso shots. The advanced features, such as the PID temperature control and pre-infusion settings, are praised for enhancing the coffee-making experience. Users also appreciate the steam wand’s power and ability to create perfect microfoam for lattes and cappuccinos. A few reviews mention the machine’s size and weight as potential issues for smaller kitchens, but overall, the feedback is overwhelmingly positive.
Review of La Marzocco GS3 by John Lewis Customers
At John Lewis, the La Marzocco GS3 holds a customer rating of 4.5 out of 5 stars. Customers highlight the machine’s professional performance and aesthetic appeal. The GS3’s ability to maintain stable temperatures and produce consistent shots of espresso is frequently noted as a key advantage. Reviewers also appreciate the machine’s robust build and the quality of the materials used. Some users mention that the machine requires regular maintenance and cleaning to keep it in optimal condition, but they generally agree that its performance justifies the effort.
Review of La Marzocco GS3 by Argos Customers
Customers at Argos rate the La Marzocco GS3 at 4.6 out of 5 stars. Users are impressed with the machine’s high performance and the quality of the espresso it produces. The dual boiler system and precise temperature control are highlighted as major benefits, allowing for simultaneous brewing and steaming. The machine’s elegant design and sturdy construction are also praised. Some reviewers note that the GS3’s high cost may be prohibitive for some buyers, but those who have invested in it are generally very satisfied with its capabilities.
Review of La Marzocco GS3 by Best Buy Customers
On Best Buy, the La Marzocco GS3 has a rating of 4.7 out of 5 stars. Customers commend the machine’s ability to deliver professional-grade espresso and its user-friendly interface. The PID temperature control and the steam wand’s performance are frequently mentioned as standout features. Reviewers also appreciate the machine’s aesthetic design and build quality. While some users point out that the machine’s price is high, they agree that the investment is worthwhile for serious coffee enthusiasts who want to achieve the best possible results at home.
Conclusion
The La Marzocco GS3 is the epitome of home espresso technology, combining professional features with user-friendly design. Its advanced thermal stability system, dual boilers, and digital controls provide a luxurious espresso experience. With options for personalization and flexible operation modes, the GS3 is perfect for the discerning home barista who seeks both performance and elegance. Whether you’re a seasoned barista or an espresso enthusiast, the GS3 promises to elevate your coffee-making experience to professional standards, making it a worthy investment for any coffee lover.
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