Cascade refrigeration systems for ultra-low temperature pharmaceutical processes, cold storage support, and reaction chemistry where ultracold fluid is critical. Down to -112°F (-80°C). Stainless steel reservoir and cascade compressor system. Made in USA.
An ultra-low temperature chiller (ULT chiller) is a cascade-refrigeration system that cools a process fluid to roughly −40°C to −80°C (−40°F to −112°F) — far colder than a standard process chiller. It uses two refrigeration circuits in cascade: the first stage pre-cools the second, letting the system reach temperatures a single-stage chiller cannot. A ULT chiller is not cryogenic — cryogenic systems operate below about −150°C; a ULT chiller is engineered for ultra-low process cooling and cold-storage support down to −80°C.
Common applications for ultra-low temperature chillers: ethanol and hydrocarbon extraction, pharmaceutical and reaction chemistry, biomedical and cold-storage support, and semiconductor processes.
1/2 to 2 ton. Cascade refrigeration. Compact footprint.
Cascade refrigeration. AG0500-ULT also available in 208-240V/1P.
5 to 20 ton. Cascade refrigeration. High-flow centrifugal pumps. External condensing unit (ECU) included on every model.
Cascade refrigeration. Every ULT model (AG5000–AG20000) ships with its matching external condensing unit (ECU) included. ECU dimensions: 48.25" x 68.31" x 36.38".
Every ULT model (AG5000 through AG20000) ships as a matched set with its external condensing unit — the ECU is included, not optional. It lets the condenser sit outdoors or in a remote equipment room.
| ECU Model | Compatible Chiller | Dimensions (D x W x H) | Weight | Voltage | FLA / MCA |
|---|---|---|---|---|---|
| AG5000-ECU | AG5000-ULT (included) | 48.25" x 68.31" x 36.38" | 1,080 lbs | 480V/3P | 27.3A / 34.2A |
| AG10000-ECU | AG10000-ULT (included) | 48.25" x 68.31" x 36.38" | 2,160 lbs | 480V/3P | 54.6A / 68.4A |
| AG15000-ECU | AG15000-ULT (included) | 48.25" x 68.31" x 36.38" | 3,240 lbs | 480V/3P | 81.9A / 102.6A |
| AG20000-ECU | AG20000-ULT (included) | 48.25" x 68.31" x 36.38" | 4,320 lbs | 480V/3P | 109.2A / 136.8A |
Subcooling butane and propane solvents to -65°F for high-yield, high-clarity botanical extracts. Commonly paired with SLT condensing units.
Condenser cooling for lyophilization chambers. ULT chillers maintain shelf temperature and condenser temps required for API stability.
CO2 liquefaction and separator cooling below -50°C (-58°F) for supercritical CO2 systems in botanical and hemp extraction.
Capturing solvent vapors from vacuum systems in extraction, distillation, and laboratory processes before they reach pumps or vents.
Thermal cycling, cold plate testing, and environmental chambers requiring stable temperatures below -60°C (-76°F).
Pre-cooling ethanol to -70°C (-94°F)+ for winterization processes that require deeper temperatures than SLT or ELT systems can reach.
Full electrical, dimensional, and performance data for all ULT models. We can help size the right system for your application.
An ultra-low temperature chiller (ULT chiller) is a cascade-refrigeration system that cools a process fluid to roughly −40°C to −80°C (−40°F to −112°F) — far colder than a standard process chiller.
ULT reaches −112°F (−80°C) using cascade refrigeration — ethanol extraction, pharmaceutical, biomedical, and semiconductor processes.
No. Cryogenic is below about −150°C; ULT is cascade refrigeration for ultra-low process cooling and cold-storage support down to −80°C.