Stirling Ultracold is proud to share the independently verified energy consumption and temperature stability test results for the VAULT100 PRO ultra-low temperature (ULT) freezer.
Tested by an independent, EPA-recognized laboratory in accordance with the EPA ENERGY STAR® Final Test Method, the VAULT100 PRO demonstrated a weighted average energy consumption of 5.71 kWh per day under steady-state conditions and 6.63 kWh per day when tested with six door openings. This standardized testing method provides laboratory freezer buyers with a consistent basis for comparing energy consumption across models and manufacturers.
Beyond energy consumption, the testing evaluated temperature stability during and after door openings. The VAULT100 PRO incorporates purpose-designed features to help minimize temperature fluctuations during routine access and support temperature recovery afterward.
The manual vacuum breaker and redesigned inner doors are engineered to minimize peak temperature variation when the door is opened. Following door openings, the vaulted ceiling, new thermosiphon (TS) design, and perforated top work together to support temperature recovery and improve temperature uniformity.
Together, these results highlight Stirling Ultracold’s commitment to engineering solutions that address the practical demands of laboratory sample storage, combining energy performance with thoughtful temperature management.
Explore the test results to learn more about the VAULT100 PRO’s performance under the ENERGY STAR® testing protocol.
About Stirling Ultracold and Global Cooling: Global Cooling, Inc. manufactures and sells Stirling Ultracold freezers, a new generation of environmentally friendly ultra-low storage solutions which operate between -20°C and -100°C. These 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 successful commercial application in ultra-low temperature cooling systems.
