By Kai Nakamura · Production roaster & equipment editor · Updated 2026-09-17
Loring S7 Nighthawk vs Diedrich IR-5
Compact convection line against the 5 kg IR workhorse
Loring S7 Nighthawk leads on thermal stability — budget longer lead time than Diedrich quotes.
Also searched: diedrich ir-5 vs loring s7 nighthawk
Decision picker
Specification matrix
| Spec | Loring S7 Nighthawk | Diedrich IR-5 |
|---|---|---|
| Batch capacity | 7 kg | 5 kg |
| Heat source | 175,000 BTU/h gas | 200,000 BTU/h gas |
| Drum / chamber | Single-wall steel | Double-wall IR drum |
| Batch time (typical) | 10 min | 12 min |
| Throughput (modelled) | 30 kg/h | 18.8 kg/h |
| Street price band | $125,000 USD | $62,000 USD |
| Exhaust | 450 CFM | 500 CFM |
| Lead time | 24 wks — confirm with dealer | 14 wks — confirm with dealer |
| Automation | Smart Roast PLC | IR control panel |
| Service hub | USA | USA |
Batch capacity
Loring
7 kgDiedrich
5 kgHeat source
Loring
175,000 BTU/h gasDiedrich
200,000 BTU/h gasDrum / chamber
Loring
Single-wall steelDiedrich
Double-wall IR drumBatch time (typical)
Loring
10 minDiedrich
12 minThroughput (modelled)
Loring
30 kg/hDiedrich
18.8 kg/hStreet price band
Loring
$125,000 USDDiedrich
$62,000 USDExhaust
Loring
450 CFMDiedrich
500 CFMLead time
Loring
24 wks — confirm with dealerDiedrich
14 wks — confirm with dealerAutomation
Loring
Smart Roast PLCDiedrich
IR control panelService hub
Loring
USADiedrich
USAQualitative scores — verify against your roast program
Why this split
Loring S7 Nighthawk leads on the weighted score for most boutiques we modelled.
Diedrich stays competitive when entry commercial ir outweighs the price gap.
Deep dives
Recirculation vs open exhaust
Loring S7 Nighthawk recirculates hot gas — exhaust temperature drops and afterburner load shrinks.
Open-drum platforms vent more heat per batch. Model your gas meter at 50% and 75% charge before signing.
Verify with vendor
- • Request OEM combustion efficiency curve
- • Confirm AHJ afterburner requirement for your address
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 Loring S7 Nighthawk lead time and freight to your dock
- • Confirm Diedrich IR-5 install kit and probe package included
- • Ask for three references at similar elevation and batch size
Side-by-side
Loring strengths & gaps
- Compact footprint
- Low emissions
- High capital cost for capacity
Diedrich strengths & gaps
- Entry commercial IR
- Consistent heat transfer
- Limited batch size for growth