By Kai Nakamura · Production roaster & equipment editor · Updated 2026-09-21
Diedrich IR-2.5 vs San Franciscan SF-1
Batch capacity, utilities, and roast-style fit
San Franciscan SF-1 wins on installed cost — confirm Diedrich dealer support in your region before ruling it out.
Also searched: san franciscan sf-1 vs diedrich ir-2.5
Decision picker
Specification matrix
| Spec | Diedrich IR-2.5 | San Franciscan SF-1 |
|---|---|---|
| Batch capacity | 2.5 kg | 1 kg |
| Heat source | 120,000 BTU/h gas | 55,000 BTU/h gas |
| Drum / chamber | Double-wall IR drum | Hand-built steel drum |
| Batch time (typical) | 10 min | 9 min |
| Throughput (modelled) | 10.7 kg/h | 4.6 kg/h |
| Street price band | $42,000 USD | $22,000 USD |
| Exhaust | 350 CFM | 180 CFM |
| Lead time | 12 wks — confirm with dealer | 12 wks — confirm with dealer |
| Automation | Basic IR panel | Manual |
| Service hub | USA | USA |
Batch capacity
Diedrich IR-2.5
2.5 kgSan Franciscan SF-1
1 kgHeat source
Diedrich IR-2.5
120,000 BTU/h gasSan Franciscan SF-1
55,000 BTU/h gasDrum / chamber
Diedrich IR-2.5
Double-wall IR drumSan Franciscan SF-1
Hand-built steel drumBatch time (typical)
Diedrich IR-2.5
10 minSan Franciscan SF-1
9 minThroughput (modelled)
Diedrich IR-2.5
10.7 kg/hSan Franciscan SF-1
4.6 kg/hStreet price band
Diedrich IR-2.5
$42,000 USDSan Franciscan SF-1
$22,000 USDExhaust
Diedrich IR-2.5
350 CFMSan Franciscan SF-1
180 CFMLead time
Diedrich IR-2.5
12 wks — confirm with dealerSan Franciscan SF-1
12 wks — confirm with dealerAutomation
Diedrich IR-2.5
Basic IR panelSan Franciscan SF-1
ManualService hub
Diedrich IR-2.5
USASan Franciscan SF-1
USAManufacturer specs and dealer quotes. Throughput model uses SCA 4-minute cooling allowance. Verify all numbers with OEM before purchase.
Strengths & trade-offs
Diedrich strengths & gaps
- Shop-scale production
- IR heat consistency
- Manual operation
San Franciscan Roaster Co. strengths & gaps
- Craft build
- Sample-to-production path
- Manual only
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.
What to verify with your dealer
Neither OEM publishes binding street prices — quotes move with queue and freight.