Stirling Ultracold SU780XLE ULT freezer – the multiple world champion
Space-saving with 780 liters of storage capacity on less than one square meter of floor space. Temperature range -20°C to -86°C. Up to 70% energy savings in electricity and waste heat. 7-year material warranty on the cooling system.

The innovative Stirling Ultracold ultra-low temperature freezers utilize a free-piston Stirling engine to achieve highly efficient storage of general laboratory materials ranging from -20°C to -86°C. Conventional ultracold freezers employ a compressor system that is highly susceptible to wear and tear and has a short useful life. The Stirling ultra-low temperature freezers do not use compressor-based or cascade refrigeration systems; they use patented free-piston Stirling engine technology that was originally developed for energy, aerospace and industrial applications before its successful commercial application in ultra-low-temperature cooling systems.
Product features of SU780XLE ultra-low freezer:
- Greatest energy savings in electricity and waste heat
- Largest storage capacity per square meter of floor space
- Reliable cooling system with 7-year material warranty
- Minimal maintenance effort
- Lowest total cost of ownership
Storage temperature from -20°C to -86°C freely selectable
- Best temperature stability and thus highest sample safety
- Certified for clean rooms
- 100% natural refrigerants and no use of oil
- Sustainable production and packaging
- Full cooling capacity up to +35°C ambient temperature
- Low door overhang saves space in the aisle when door is opened
Brochure Stirling Ultracold SU780XLE 3>
Results of various temperature tests Stirling Ultracold SU780XLE 3>

High Density SU780XLE – The Best Choice for Maximum Storage Capacity and Security
With the High-Density Rack option you can increase the storage capacity up to 700 standard 2” boxes. This is also optimal to maximize temperature stability as well as uniformity.
The High-Density Rack option is available with drawer racks. This allows you to remove a maximum of 5 boxes at the same time without burdening the remaining valuable stock with temperature fluctuations. Each drawer is numbered by laser milling.
Your advantages:
- Maximum storage capacity on the smallest footprint – double world record!
- Highest temperature stability and uniformity
- Longest thawing time in case of power failure
- Lowest cost per vial