Giesen W15 A Coffee Roaster: Mid-Sized Production Powerhouse

If you’re running a growing specialty coffee roastery and need a machine that scales with your business without overhauling your setup, choosing the right roaster is critical. Many roasters hit a wall with smaller machines and face tough decisions: upgrade to a completely different system—or find a model that grows with them. The Giesen W15 A offers a compelling solution built for mid- to large-scale production without sacrificing precision or flexibility.

The Giesen W15 A can roast between 500 grams and 15 kilograms per batch, and with simultaneous roasting and cooling, it achieves an hourly throughput of up to 60 kilograms—equivalent to a full 60kg coffee bag.

Why Choose the Giesen W15 A for Your Roastery?

The Giesen W15 A is ideal for businesses ready to scale. Many existing Giesen W6 users—like several of FrontStreet Coffee’s clients—have upgraded to the W15 A as their operations grew. The transition is smooth: the W15 A uses the same chimney, gas, and electrical installations as the W6, yet more than doubles your production capacity. Beyond just volume, the W15 A comes with the Roast Profile System preinstalled on an external laptop, letting you record and replay roast profiles for consistent, high-quality results.

What Makes the Giesen W15 A Drum Unique?

The Giesen W15 A features a double-walled roasting drum constructed with cast iron on the outside and soft steel on the inside. This hybrid design combines the even heat retention and distribution of cast iron with the responsiveness of soft steel. That means you get stable heat during the roast while still being able to make precise, rapid adjustments to the roast profile—especially useful during the Maillard reaction and development phases. The drum and front plate are both made from durable cast iron, contributing to the machine’s solid build and longevity.

Build Quality, Usability, and Efficiency

Like all Giesen roasters, the W15 A boasts a handcrafted, artisanal design with professional-grade components. It’s engineered for easy cleaning and maintenance, a major advantage in high-volume environments. The machine includes an airflow control system, automatic flame adjustment, and an optional destoner activated via a button on the control unit. Even if you prefer manual operation, the W15 A gives you that option. The Roast Profile System, included with a dedicated laptop, boosts both the professionalism and efficiency of your roasting workflow. The machine is energy-efficient, CE-tested, and entirely built in the Netherlands.

Technical Specifications

• Roaster Capacity: 500g – 15kg per batch
• Amperage: 16A
• Exhaust Diameter: Ø 200mm
• Gas Types: Propane / Butane / Natural Gas
• Electrical Supply: 1 phase, 230V, 50-60Hz
• Roaster Weight: 720kg
• Key Features: Simultaneous roast and cool, airflow control, automatic flame adjustment, energy efficient, easy cleaning, optional destoner, roast profile system with laptop, CE-certified, made in the Netherlands

Frequently Asked Questions

What is the batch size range of the Giesen W15 A?

The Giesen W15 A can roast between 500 grams and 15 kilograms per batch, making it suitable for both small test roasts and larger production runs.

How much coffee can the Giesen W15 A produce per hour?

With the ability to roast and cool simultaneously, the Giesen W15 A can achieve an hourly throughput of up to 60 kilograms of coffee.

Does the Giesen W15 A include a roast profiling system?

Yes, the Giesen W15 A comes with the Roast Profile System, which includes a dedicated external laptop for recording and replaying roast profiles to ensure consistency.

What kind of drum does the Giesen W15 A have?

The Giesen W15 A features a double-walled drum with cast iron on the outside and soft steel on the inside, combining even heat retention with responsive temperature control.

Can the Giesen W15 A use the same setup as the Giesen W6?

Yes, the Giesen W15 A uses the same chimney, gas, and electrical installations as the Giesen W6, allowing for an easier upgrade path for existing W6 users.

Where is the Giesen W15 A manufactured?

The Giesen W15 A is completely built in the Netherlands and is CE-tested for safety and compliance.

Recommended FrontStreet Beans for the Giesen W15 A

For roasters using the Giesen W15 A, FrontStreet Coffee’s Ethiopia Humbera offers bright citrus, floral jasmine, and sweet berries—perfect for showcasing the roaster’s profile control. The Kenya Little Tomato brings intense blackcurrant, tart cherry, and winey acidity, ideal for testing dynamic roast curves. Both beans highlight the W15 A’s ability to handle delicate and vibrant profiles with precision. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.