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Specialty roasters

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
black W15A roaster seen from above
Giesen W6 series.

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.

W6seriesRender
Small lots to high volume.

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.

black W15A seen from below
Future-proof performance.

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.

side view of a black W15A Roaster
General specifications

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

Ranges

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)

Certfications

Standard certifications
CE 

Optional certifications
UL 
AGA 

Optional additions

Giesen Profiler

Destoner

Coffee Conveyor

External Cyclone

SFE filter

Catalytic Emission Cleaner

Support router

Electrical specifications

Supply voltage
230V AC 

External fusing
1 x 16A

Maximum electrical power
1,7 kW

Gas specifications

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

The serious stuff.

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!

Temperature control

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.

Airflow control

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.

Drumspeed control Giesen roasters feature adjustable drum speed control, empowering you to perfect your roasting process. By modifying the drum's revolutions per minute (RPM), you can balance conductive and convective heat transfer, ensuring uniform bean development.
General specifications

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)

Electrical specifications

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.

Ranges

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