Up to 24 kg / h.
With a 6-kilo capacity per batch and up to 24 kilos per hour, Giesen W6 series roasters deliver efficiency and consistency. Perfectly balanced for professionals who demand both quality and volume.
The ultimate centerpiece for your coffee shop. Designed to perfection, it offers the flexibility of full-control manual roasting alongside the convenience of fully automatic roasting. Handcrafted in the Netherlands and shipped worldwide.



Time to explore
- W15A
- W15E

The atmospheric gas burner ensures consistent, adjustable heat by mixing gas with air for an efficient flame. It enables precise temperature control, enhancing coffee flavors while maintaining energy efficiency.


Giesen Profiler is advanced roasting software for precise control and automation. It adjusts temperature, drum speed, and airflow, enabling real-time monitoring, consistency, efficiency, and flavor experimentation.

Giesen roaster temperature control ensures precise heat management, real-time monitoring, and consistency. It prevents over- or under-roasting, allowing full control to develop optimal flavor profiles.

Drum speed control in a Giesen roaster adjusts rotation for optimal heat transfer and bean movement. Fine-tuning ensures even roasting, airflow control, and flavor precision, enhancing consistency and quality.

The internal cyclone collects chaff below the cooling screen, eliminating the need for an external cyclone. This saves costs and space. It can be emptied between roasts using Cleaning Mode.

For stand-alone use, all functions can be controlled via the HMI touchscreen, allowing easy adjustment of temperature, burner, airflow, and drum speed for seamless operation.

The roaster lets you start a new batch while the previous batch is cooling in the cooling sieve, enabling simultaneous roasting and cooling for nonstop, efficient coffee processing.

The W15E's heating system features two different heat sources, one of which is the hot air blower. This efficient heat source allows you to regulate the heat in your coffee roaster in a very controlled way.

Besides the hot air blower, the W15E also features three infrared panels that provide conduction heating. These panels give you ultimate control over the different heat sources in your roaster.


Giesen Profiler is advanced roasting software for precise control and automation. It adjusts temperature, drum speed, and airflow, enabling real-time monitoring, consistency, efficiency, and flavor experimentation.





Roast bigger, bolder, and better.
The W15 series is an unprecedentedly popular roaster in medium-sized coffee roasteries. The machine is accessible, reliable and gives huge opportunity for growth.

Compare the models


"You really can't get a bad roast out of it."
As mentioned by Oskar Cedermalm from CozoCoffee.The Giesen W15 and destoner
The Giesen W15 series with a destoner ensures precise roasting and clean beans, removing stones and metal for better roast quality and equipment protection. This combination boosts efficiency and guarantees superior, contaminant-free coffee.
The Giesen W15 and Profiler
The Giesen W15 series with a destoner ensures precise roasting and clean beans, removing stones and metal for better roast quality and equipment protection. This combination boosts efficiency and guarantees superior, contaminant-free coffee.
Colors That Match Your Vibe

Technical Information
Technical Information
Technical Information
Technical Information
Technical Information
Power and versatility for growing roasteries
The Giesen W15 series is designed for roasters who need both capacity and precision without compromising on space efficiency. With its optimized design, this 15kg roaster seamlessly fits into medium to large roasting environments, offering the perfect balance between power and flexibility. Whether you're scaling up production or refining your craft, the W15 delivers exceptional consistency, full control, and outstanding roasting results—batch after batch.
Scale your coffee roasting with the Giesen W15 series
The Giesen W15 series roasters are built for those looking to take their coffee production to the next level. With a batch capacity of up to 15 kg, the W15 strikes the perfect balance between high efficiency and precise control. Whether you're a specialty roaster expanding your business or need a reliable workhorse for consistent, high-volume roasting, this machine delivers unmatched flexibility and quality in every batch.
Achieve perfect roast profiles with advanced technology
The Giesen W15 series is designed with advanced technology to give you full control over every aspect of your roast. With adjustable drum speed, temperature, and airflow, you can fine-tune every batch to perfection. Whether you're developing unique roast profiles or ensuring consistency at scale, the W15's precision engineering allows you to replicate your best results with ease—every time.
Key Features:
- Precise temperature, airflow and drum speed control
- Customizable roast profiles
- Data logging for perfect roast consistency
Next-level E-roasting with the W15 series
The W15 series is available as a unique electric variant. This next-level model combines a hot air blower and infrared panels to create the perfect mix between conduction and convection heat. Get the ultimate results from your beans.
Key Features:
- Unique dual heat-source electric roasting
- Efficient energy usage
- Next-level electric roasting
Maximum efficiency, minimum waste
The Giesen W15 series is built for optimal energy and resource efficiency without compromising performance. Its advanced burner system ensures efficient gas usage, reducing operational costs while maintaining exceptional roasting quality. The optimized airflow design further enhances energy efficiency, making the W15 series a smart, sustainable choice for long-term, high-capacity roasting operations.
Perfectly tailored roast profiles for every coffee bean
The W15-Series offers unparalleled flexibility when it comes to creating custom roast profiles. Whether you are roasting light, medium, or dark coffees, the machine allows you to make precise adjustments to temperature, time, and airflow, ensuring that every batch is roasted to perfection. The ability to save and recall previous profiles ensures you can maintain consistency across different roast levels.
Key Features:
- Customizable roast parameters
- Save and recall profiles
- Perfect for various roast levels (light to dark)
- Repeatable results with every batch
Durable and reliable for long-term roasting performance
Crafted with premium materials, the W15-Series roasters are built to last. The robust steel construction ensures durability, while the machine’s design allows for easy maintenance and cleaning. With attention to detail in every component, from the drum to the cooling tray, the W15-Series promises reliable performance, year after year, making it a wise investment for any roaster.
Key Features:
- Premium steel construction
- Long-lasting durability
- Easy maintenance and cleaning
- Robust build for consistent performance
Roast with confidence using the W15 Series’ safety features
The W15 series is designed with user safety in mind, offering several built-in features to ensure safe and efficient roasting. The roaster is equipped with automatic temperature sensors, overheat protection, and advanced cooling systems to prevent accidents and ensure optimal working conditions.
Key Features:
- Automatic temperature sensors
- Overheat protection system
- Advanced cooling system
- User-friendly touchscreen interface
- Clear and comprehensive safety manual
Technical data.
If you need any further technical information that you can't find on this page, please contact us. We will be happy to help you!
Giesen roasters combine advanced temperature control with cutting-edge automation, ensuring consistency and ease in every roast. With features like automatic mode and burner percentage control, you have the tools to master your craft and achieve unparalleled results.
Giesen roasters feature advanced airflow control, allowing you to fine-tune the roasting environment to achieve your desired flavor profiles. By adjusting the underpressure settings, you can influence the heat transfer and development of your beans.
Measurements
W6A - 1427 (L) x 723 (W) x 1705 (H)
W6E - 1410 (L) x 723 (W) x 1705 (H)
W6A Pro - 1623 (L) x 2414 (W) x 1944 (H)
Weights
W6A - 485 kg (roaster only)
W6E - 496 kg (roaster only)
W6A Pro - 600 kg (roaster only)
Minimum batch size
W6A - 3 kg
W6E - 3 kg
W6A Pro - 3,5 kg
Maximum batch size
W6A - 6 kg
W6E - 6 kg
W6A Pro - 7 kg
Sound level
W6A - 70 dB (A)
W6E - 70 dB (A)
W6A Pro - 70 dB (A)
Supply voltage
W6A - 230V AC (1L+N+PE)
W6E - 400 V AC (3L+N+PE)
W6A Pro - 230V AC (1L+N+PE)
External fusing
W6A - 1 x 16A
W6E - 3 x 32A
W6A Pro - 1 x 16A
Max. electrical power
W6A - 1,7 kW
W6E - 17 kW
W6A Pro - 2,5 kW
Keep in mind that this is the absolute maximum power consumption. Actual average usage will be much lower.
Underpressure range
80 - 150 Pa (min. - max.)
Default value: 110 Pa
Drum speed range
36 - 51 Hz (min. - max.)
Default value: 46 Hz
Temperature setpoint range
100 - 250 °C (min. - max.)
Default value: 200 °C