By Kai Nakamura · Production roaster & equipment editor · Updated 2026-09-21
Bellwether Shop Roaster vs Diedrich IR-2.5
Electric install simplicity vs gas throughput ceiling
Bellwether Shop Roaster wins without gas permitting — but verify 6 kW panel capacity first.
Also searched: diedrich ir-2.5 vs bellwether shop roaster
Decision picker
Specification matrix
| Spec | Bellwether Shop Roaster | Diedrich IR-2.5 |
|---|---|---|
| Batch capacity | 2 kg | 2.5 kg |
| Heat source | 6 kW electric | 120,000 BTU/h gas |
| Drum / chamber | Electric convection drum | Double-wall IR drum |
| Batch time (typical) | 9 min | 10 min |
| Throughput (modelled) | 9.2 kg/h | 10.7 kg/h |
| Street price band | $12,000 USD | $42,000 USD |
| Exhaust | Filtered — verify local code | 350 CFM |
| Lead time | 4 wks — confirm with dealer | 12 wks — confirm with dealer |
| Automation | Cloud-managed profiles | Basic IR panel |
| Service hub | USA | USA |
Batch capacity
Bellwether Shop Roaster
2 kgDiedrich IR-2.5
2.5 kgHeat source
Bellwether Shop Roaster
6 kW electricDiedrich IR-2.5
120,000 BTU/h gasDrum / chamber
Bellwether Shop Roaster
Electric convection drumDiedrich IR-2.5
Double-wall IR drumBatch time (typical)
Bellwether Shop Roaster
9 minDiedrich IR-2.5
10 minThroughput (modelled)
Bellwether Shop Roaster
9.2 kg/hDiedrich IR-2.5
10.7 kg/hStreet price band
Bellwether Shop Roaster
$12,000 USDDiedrich IR-2.5
$42,000 USDExhaust
Bellwether Shop Roaster
Filtered — verify local codeDiedrich IR-2.5
350 CFMLead time
Bellwether Shop Roaster
4 wks — confirm with dealerDiedrich IR-2.5
12 wks — confirm with dealerAutomation
Bellwether Shop Roaster
Cloud-managed profilesDiedrich IR-2.5
Basic IR panelService hub
Bellwether Shop Roaster
USADiedrich IR-2.5
USAManufacturer specs and dealer quotes. Throughput model uses SCA 4-minute cooling allowance. Verify all numbers with OEM before purchase.
Strengths & trade-offs
Bellwether Coffee strengths & gaps
- No venting required
- Café-in-a-box model
- Bean sourcing tied to platform
Diedrich strengths & gaps
- Shop-scale production
- IR heat consistency
- Manual operation
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.
Electric vs gas site work
Bellwether Shop Roaster skips gas permitting — but panel upgrade may equal gas line cost.
Get MCA off the nameplate and a load calc from a licensed electrician before lease signing.
What to verify with your dealer
Neither OEM publishes binding street prices — quotes move with queue and freight.