Products > Refrigeration Units


A.I. TEC manufactures extra-powerful refrigeration units that can attain temperatures as low as -65°C without the use of liquid nitrogen. Units run much more efficiently and safely compared to conventional liquid nitrogen coolers.

They can be run continuously for long periods of time, can be easily adapted to installation plans and changes in production line layout,and can be used at room or high temperature conditions.

A wide range of temperatures can be obtained with a single unit. Refrigeration units are mainly used in low- and high-temperature automobile electronic component testing lines and medical equipment manufacturing lines.


Wide range of temperature control

Units can attain temperatures of -65°C to -125°C.

Precise temperature control

Maintains desired temperatures within tolerances of ±0.1°C.

Low running cost

Maintains extremely low temperatures in testing units by circulating cold air instead of liquid nitrogen.

Efficient refrigeration system

Uses a two-step refrigeration process to circulate extremely cold air very efficiently in a small space.

Diverse line-up

Both air-cooled (AI-860) and water-cooled (AI-830) models are available.
The water-cooled AI-870 model is a recent addition to our product line with greatly increased cooling power in a small unit.

Extended continuous operation

Units can run continuously for periods of up to 168 hours.

Flexible layout planning

Layout planning and changes are simpler than for systems requiring liquid nitrogen.

Easily controllable

Units can be monitored and adjusted easily by matching control devices developed by A.I. TEC.


There is no longer a risk of injury or oxygen shortage from a nitrogen leak.

Environmentally friendly

Units use a refrigerant that does not harm the ozone layer.

Product Specifications

Model name AI-829 AI-860 AI-830 AI-870
Photo AI-829 AI-860 AI-830 AI-870
Cooled air Fresh air Circulated air
Temperature range -60°C to -40°C -65°C to 125°C
Tolerance - ± 0.1°C
Continuous operation time 1 Week
Cooling pacity 1.5kW 1.5kW 1.5kW 2.2kW
Air Flow Rate 590ℓ/min 9000L/min(50Hz)
Dimensions 610×760×1250 610×760×1410
Weight 200kg 270kg 280kg 280kg
Power supply AC200V±10% 50/60Hz
Energy consumption 4.9kW 7.2kW 7.0kW 8.1kW!!!
Air pressure 0.4 ~ 0.5MPa
Cooling system Air water
Water Supply 24L/min 33L/min