roaster equipment
giesen coffee roasters
dutch-built gas drum roasters from the w-series sample machine to 120kg lines.
Giesen Coffee Roasters has been building gas-fired drum roasters in Ulft, Netherlands since 2005. their lineup runs from the 1 kg W1A sample roaster through the 45 kg W45A production machine, covering small batch specialty roasters and mid-size commercial operations. all models in the W-series use gas burners with profile logging control via touchscreen interfaces. the machines are known for variable drum speed control (typically 36-51 Hz range), adjustable underpressure settings for airflow management, and internal cyclones that eliminate the need for external chaff collection on smaller models. build quality reflects Dutch manufacturing standards with attention to fit and finish. Giesen sits in the premium segment without reaching top-tier pricing. the control systems offer solid functionality for profile development and repeatability, though they're not as advanced as what you'll find on high-end German or American machines. these roasters work well for cafes moving into production roasting, established roasters expanding capacity, or anyone who wants reliable gas-fired drums with enough control to dial in profiles without overwhelming complexity. expect to handle your own installation planning around gas connections (typically 3/8" inlet) and ventilation requirements.
cafés pouring through giesen coffee roasters
1 in directorythe machines
questions you might have
what's the actual batch size range on giesen roasters?
giesen publishes minimum and maximum batch weights for each model. the w6a runs 1-6 kg, the w15a handles 3-15 kg, the w30a does 6-30 kg, and the w45a spans 10-45 kg. the w1a sample roaster works from 100 grams to 1 kg. these ranges give you decent flexibility, though you'll get best results staying in the middle third of the capacity rather than pushing the extremes. lower minimums help when you're testing new origins or running small lot sizes without compromising roast quality.
do giesen roasters require three-phase power?
depends on the model and heat source. gas-fired models like the w6a and w15a run on single-phase 230v or 120/240v connections with relatively low electrical draw (under 2 kw for the w6a), since the gas burner provides roasting heat. electric versions like the w6e need three-phase 400v power and pull significantly more current (up to 17 kw maximum on the w6e). check your facility's electrical service before ordering. most small to mid-size roasting spaces can handle the gas models without electrical upgrades.
what kind of gas connection do these machines need?
giesen roasters typically use a 3/8" right-hand thread gas inlet at the rear of the machine. some documentation mentions 3/4" connections on certain models like the w15a. they're designed for natural gas at specific pressures (around 9.5 mbar for g20 european natural gas), but can be configured for propane with different injectors and pressure settings. you'll need to verify your local gas type and pressure, then ensure the machine is set up accordingly. plan for professional gas fitting and local code compliance during installation.
are you giesen coffee roasters?
this brand profile is open. claim a partner tier and get a custom CTA, featured placement, and direct lead capture from the 1+ café operators already browsing.
partner with us