Proven Successor to Compressor-Based Ultra-Low Storage

Until now, the only ultra-low temperature (ULT) freezer options you might have thought were available have been powered by decades-old compressor technology. Perhaps you’ve come to accept that compressor-related issues complicate and even threaten the preservation of your life’s work!

That is why we invented the first and only line of compressor-free, ultra-low temperature freezers. With the uncomplicated, free-piston Stirling engine, our proven freezer models advance solutions in every aspect of ULT technology…

Request Stirling Ultracold product info >

Free-Piston Stirling Engine

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BETTER TEMPERATURE RANGE AND STABILITY

Wider temperature range between -20°C to -86°C
Electronically modulates to control steady-state operating temperatures within +/-1°C of setpoint, while continuously adapting to changing conditions

MORE STORAGE IN A SMALLER, LESS BURDENSOME FACILITY FOOTPRINT

Compact cooling system design frees more storage volume per footprint, allowing higher storage capacity in the same space and the industry’s only portable ULT freezer
Runs variable voltages from 100V to 240V, plugs into any outlet worldwide by simply changing the power cord and is brown-out tolerant
Top-mount engine design expels less heat at the top for better airflow, significantly reducing the need for special ventilation and HVAC

LESS LIFETIME MAINTENANCE

Far fewer moving parts that are driven by linear non-contact motion, without wear
Sealed system floats a piston on frictionless gas bearings without the need for oil and associated maintenance
Compressor-free ULT freezers need minimal periodic maintenance over their effective operating lifetimes

IMPROVED EFFICIENCY AND SUSTAINABILITY

Inherent efficiency reduces operating and infrastructure energy consumption up to 70% compared to standard compressor-based ULT freezers
Uses 100% natural refrigerants with significantly lower Global Warming Potential than F-gas refrigerants used in many other ULTs

LOWER TOTAL COST OF OWNERSHIP

Low energy use and infrastructure cost, combine with minimal maintenance, reduced floor space and longer operating life, to dramatically cut total operating cost

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