The Roaster Desk

By Kai Nakamura · Production roaster & equipment editor · Updated 2026-09-17

Giesen W6A vs Probat P05 III

Dutch airflow finesse vs Probat shop-scale reliability

→ Probat P05 III

Probat P05 III wins on installed cost — confirm Giesen dealer support in your region before ruling it out.

Hourly throughput: WinnerAutomation depth: Close
Lowest street price → ProbatFaster batches → GiesenIR radiant profile → Diedrich drum physics

Also searched: probat p05 iii vs giesen w6a

Decision picker

What is your primary constraint?
Batch size you roast most often?
Is gas already permitted on-site?

Specification matrix

Batch capacity

Giesen

6 kg

Probat

5 kg

Heat source

Giesen

190,000 BTU/h gas

Probat

180,000 BTU/h gas

Drum / chamber

Giesen

Steel drum

Probat

Cast-iron drum

Batch time (typical)

Giesen

11 min

Probat

12 min

Throughput (modelled)

Giesen

24 kg/h

Probat

18.8 kg/h

Street price band

Giesen

$72,000 USD

Probat

$68,000 USD

Exhaust

Giesen

520 CFM

Probat

480 CFM

Lead time

Giesen

16 wks — confirm with dealer

Probat

18 wks — confirm with dealer

Automation

Giesen

Giesen Software Suite

Probat

Manual

Service hub

Giesen

Netherlands

Probat

Germany
Airflow ctrlThermal stab.Drum speedAutomationCapex value
W6AIII

Qualitative scores — verify against your roast program

Why this split

Probat P05 III leads on the weighted score for most boutiques we modelled.

Giesen stays competitive when excellent software integration outweighs the price gap.

Airflow path through a commercial drum roaster from burner to cyclone
Typical drum roaster airflow: burner → drum → cyclone chaff collector

Deep dives

IR radiant heat transfer

Diedrich IR drums radiate through a double-wall — different first-crack timing than convection.

Operators switching from Probat or Giesen need 15–20 calibration batches, not a copied profile.

  • Log development time ratio across 3 charge weights
  • Compare ground colour at same end temp
What to verify with your dealer

Neither OEM publishes binding street prices — quotes move with queue and freight.

Verify with vendor

  • • Confirm Giesen W6A lead time and freight to your dock
  • • Confirm Probat P05 III install kit and probe package included
  • • Ask for three references at similar elevation and batch size

Side-by-side

Giesen strengths & gaps

  • Excellent software integration
  • Drum speed control
  • Premium over Asian alternatives

Probat strengths & gaps

  • Micro-roastery standard
  • Bulletproof mechanics
  • Operator skill required

FAQ

Looking for probat p05 iii vs giesen w6a?
Same comparison — Giesen W6A is listed first by convention. Verdict and spec matrix are identical either way.
What throughput can I expect?
Modelled: 24 kg/h (Giesen W6A) vs 18.8 kg/h (Probat P05 III) including a 4-minute charge/cool cycle.
What street price should I budget?
Giesen W6A: $72,000 USD (As quoted Q1 2026, NL factory). Probat P05 III: $68,000 USD (As quoted Q1 2026, EU/US dealer). Request refreshed quotes — neither includes install.
Which supports Cropster logging?
Giesen W6A: Aftermarket probe required. Probat P05 III: Aftermarket probe required.

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