Thermo Scientific TSX Universal Series ULT freezers embody +80 years of expertise in engineering cold storage lab equipment. Featuring our next generation V-drive cooling technology, TSX Universal ULTs seamlessly adapt to your workflow, and help deliver tighter performance, faster pull-down and recovery times, and improved energy consumption.
With an enhanced user interface, universal voltage, expanded setpoint range (-40°C), simplified software updates, built-in accessory power, and more, the new TSX Universal ULT freezers set a benchmark for reliability, performance, and energy efficiency
Dependable and quality-assured
We prioritize reliable, high-quality lab equipment to support your research. Rigorously tested in field and laboratory environments and backed by industry-leading warranties.
Trusted performance and protection
With the fastest door open recovery (DOR) in the industry, our ULTs ensure your samples spend more time at optimal storage temperature, even in the most challenging lab equipments.
Greener by design
Our Design for Sustainability (DfS) approach, focused on 5 key impact areas, helps us understand and minimize the environmental impact of our products and packaging —from design to end of life. We call it the Greener by design program.
Future-ready for the connected lab
Our ULT freezers are enabled with cloud-based connectivity that affords your lab remote equipment monitoring and data analysis capabilities, collaboration tools, scientific analysis apps and more.
Optimized sample storage configuration
Standardized rack, tray, and box storage accessories optimize the amount of samples you can store in a square foot of space, while enabling better organization and ease of use.
Optimized sample storage configuration
Standardized rack, tray, and box storage accessories optimize the amount of samples you can store in a square foot of space, while enabling better organization and ease of use.
Key features designed with your science in mind
Confidence in quality and reliability

TSX Universal represents our most robust design to date, incorporating insights from over 80 years of experience to enhance every aspect of the system. From sealed system and cabinet construction to software architecture and electrical components, each element of TSX Universal has undergone significant testing and improvements.
- New reliability testing protocol: +5400 days of combined testing in field and lab environments
- Quality assured: comprehensive end-of-line testing ensures adherence to our high quality standards
- Industry-leading warranty: 12 years of compressor coverage
Universally better performance

By updating our variable speed compressors, enhancing our intelligent algorithms, and optimizing hardware with the new universal V-drive cooling technology, users can experience key performance enhancements when compared to the legacy TSX Series platform, including up to:
- 33% reduction in energy consumption
- 38% improvement in peak variation
- 41% decrease in pull-down time
- 52% faster door open recovery time
Greener by design

We seek to reduce our environmental impact and help our customers do the same by using green refrigerants, designing for energy efficiency, and building our products with recyclable materials whenever possible.
- 100% ENERGY STAR certified: All TSX universal ULTs beat todays criteria and are positioned to meet tightening requirements in the future
- 100% ACT labeled: Helping provide transparency around the environmental footprint of our products
User-centric design

Designed for labs seeking enhanced capabilities and user experience. Users can benefit from the improved interface, faster re-entry, expanded set points, reduced noise, connectivity solutions, and universal voltages.
- Universal voltage: operates on 100-230V, 50/60Hz
- Setpoint expansion: up to -40°C, a first for the TSX ULT platform
- 30 seconds re-entry time: 57% faster than previous TSX ULTs
- Whisper-quiet: just under 44 DbAs, units can be placed anywhere
- Simplified updates: easier to access and install the latest updates
- Connectivity-enabled*: 5V and Power over Ethernet outside power supplies