Unmatched 80°C Storage Advantages Across the COVID-19 Vaccine Cold Chain

Our breakthrough cooling technology makes the Stirling Ultracold line of ultra-low temperature (ULT) freezers uniquely efficient, lightweight and flexible enough to meet today’s unprecedented COVID-19 vaccine cold chain deployment challenges.


Watch Fox Business Video Featuring Stirling Ultracold CEO

Stirling Ultracold CEO looking forward to being part of coronavirus vaccine distribution

Stirling Ultracold CEO Dusty Tenney discusses his company, which supplies high-tech freezers to drug-makers to store and distribute vaccines and other medicines.

ULT Reliability in the Broadest Range of Operating Conditions

  • Widest temperature range: The ONLY commercially available ULT freezers that safely maintain temperatures from -86°C to -20°C and meet the cold storage efficacy requirements of most COVID-19 vaccine candidates, regardless of which are ultimately approved.
  • Universal power and voltage: All our units plug into 110V outlets and can be used worldwide without modifications. They are even brownout-tolerant.
  • Reliable Operation: Stirling Ultracold freezers operate in higher ambient room temperatures with minimal heat output.
  • Connectivity: Building management system IOT connectivity available.

Breakthrough Portability and Flexibility for Remote and Clinical Uses

  • Clinical: Portable and undercounter models bring -80°C vaccine storage to all points of patient care.
  • Multipurpose: The -86°C to -20°C range is adaptable to more situations, including freezer backup.

Smallest Facility Footprint With Lowest Operating Cost

  • Space: Store more vaccine and biospecimen inventory in less space within our compact footprint. The SU780XLE has the largest storage capacity per square foot/meter of floor space in its class.
  • Energy: Our revolutionary Stirling engine uses less energy per sample capacity to help maintain lower energy costs. Our SU780XLE is ENERGY STAR® certified.
  • Infrastructure: Significantly reduced power distribution/switchgear, backup power and HVAC system requirements.

Rapid Freezer Deployment

  • Delivery: Product can delivered quickly to help meet critical ULT storage needs.*
  • Setup: Fastest and simplest installation without modifications to building power or HVAC.

Stirling Ultracold In The News


Fox Business, US can realistically produce enough coronavirus vaccine for whole world

LA Daily News, Keeping coronavirus vaccines in a deep freeze one of California’s big challenges

The STAT Trade Times, UPS Healthcare launches mobile freezer storage units

Genetic Engineering & Biotechnology News, The Cold Truth about COVID-19 Vaccines

USA Today, COVID vaccine candidate from Pfizer must be stored at minus 112, prompting a rush on dry ice

CNN Business, What it could take to deliver a COVID-19 vaccine to the world

Reuters, US states race to buy ultra cold vaccine freezers, fueling supply worries

Boston Globe, Colder than Antarctica in winter: super cooling concerns for the possible first COVID-19 vaccine

The NY Times, How to ship a Vaccine at -80C, and Other Obstacles in the COVID Fight

NBC Nightly News, Inside The Challenges of Mass COVID Vaccination

Pharmaceutical Processing World, Stirling Ultracold prepares for COVID-19-driven need for ultra-cold transport

Biopharma-Reporter, Stirling going the extra mile to ensure cold-storage capacity for final leg in COVID-19 vaccine distribution

Supply & Demand Chain Executive, Stirling Ultracold Offers Commercially Available Freezers Capable of Storing COVID-19 Vaccines

Manufacturing Chemist, From the lab to the last mile: optimising the pharma cold chain (part I)

Manufacturing Chemist, From the lab to the last mile: optimizing the pharam cold chain (part II)

Pharmaceutical Commerce, Meeting the challenges of rapid Covid-19 vaccine cold chain deployment

Fox News28, Pfizer vaccine requires extreme-cold storage, could cause supply chain hurdles

ABC7 San Francisco, Low-temperature coolers, needed to transport Pfizer vaccine, are next weapon in fight against COVID-19

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