Giesen W15A

the verdict

the W15A sits in the sweet spot for many small to mid-size roasting operations, handling 3-15 kg batches with enough capacity for steady cafe supply or wholesale accounts. you can roast up to around 60 kg per hour if you're running back-to-back batches, though real-world throughput depends on your profiles and cooling times. touchscreen control covers drum speed, airflow, and multiple temperature probes in the drum for monitoring bean and air temperatures. the 3 kg minimum lets you work with smaller microlots without wasting coffee. gas connection requirements (specifications mention both 3/4" and 3/8" in different sources, verify with Giesen) and 120/240V electrical service are standard for this class. the machine needs proper ventilation planning and floor support. control system is functional for profile development and logging, though not as sophisticated as top-tier roasters. works well if you're outgrowing smaller equipment or starting a roasting operation with room to scale.