W15A
The W15A offers flexibility and efficiency, making it an ideal choice for small to medium-sized roasteries aiming to scale their production without compromising on quality.
- Versatile capacity
- Robust and reliable construction
- Fully customizable

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.

Precision meets power
The W15A bridges the gap between small-batch roasting and high-volume production, handling 7,5 to 15kg per batch with precision. It delivers unmatched consistency, efficiency, and control—perfect for scaling businesses. Roast and cool simultaneously to maximize output while maintaining top-tier quality.

Engineered excellence
The W15A offers commercial power with artisanal control, ensuring flawless roasts from small lots to large batches. Its high-performance burner and double-walled drum guarantee heat precision, while full automation boosts efficiency. A future-proof investment, this roaster evolves with your business.

Measurements
1427 x 723 x 1705 mm
Weight
485 kg (roaster only)
Minimum batch size
3 kg
Maximum batch size
6 kg
Sound level
70 dB (A)
Chimney diameter
Ø 150 mm
Underpressure range
80 - 150 Pa
(110 Pa default)
Drum speed range
36 - 51 Hz
(46 Hz default)
Temperature setpoint range
100 - 250 °C
(200 °C default)
Standard certifications
CE
Optional certifications
UL
AGA
Giesen Profiler
Destoner
Coffee Conveyor
External Cyclone
SFE filter
Catalytic Emission Cleaner
Support router
Supply voltage
230V AC
External fusing
1 x 16A
Maximum electrical power
1,7 kW
Gas connection
G 3/8"
Maximum gas consumption
G20 - 1,8 m³/h
G25 / G25.3 - 2,1 m³/h
G30 - 0.7 m³/h
G31 - 0.5 m³/h
Gas inlet pressure
G20 - 25 mbar
G25 / G25.3 - 20 mbar
G30 - 30 / 37 / 50 mbar
G31 - 30 / 29 / 50 mbar
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