LArge-scale cold storage

Reach-in pharmaceutical storage for temperature-sensitive products, with a freezer configuration and integrated layout tailored to your project.

The LOWENCO LSSU is a large-scale, reach-in freezer for temperature-sensitive pharmaceutical and biotech products.

Designed for storage from −20°C to −80°C, it is particularly suited to applications where tight product temperature control is essential.

Its dimensions and storage configuration can be tailored to your products and facility requirements.

Existing LSSU product image / corridor view Caption: One possible configuration

Up to 4,800 L

storage per unit*

−20°C to −80°C

storage temperature range

Configurable

dimensions, layout & storage format

Key features of our large-scale FREEZER

Key features of our large-scale FREEZER

A single LSSU provides up to 4,800 litres of storage, replacing up to 42 upright freezers while requiring up to 75% less floor space, depending on packaging and configuration.

This storage density comes from how products are arranged inside the freezer and not simply from building higher.

We configure the inventory layout around your product packaging and handling requirements, while maintaining the airflow needed for temperature control.

The freezer’s dimensions and compressor placement can also be tailored to your available ceiling height and floor space.

Reach-in design - Access products without entering the ULT area

The LSSU combines large-scale storage with reach-in access.

Operators retrieve products from a corridor, keeping routine handling outside the colder storage environment.

For example, products stored at −80°C can be accessed from a −25°C corridor, reducing operators’ exposure to the storage temperature.

Corridor conditions are defined around the project’s requirements.

Design around daily handling

Products can remain on trolleys during storage and transfer, reducing manual handling steps and human touchpoints. Integrated floor guides support controlled movement into and out of the freezer. Powered handling equipment can be incorporated where required to maintain ergonomic working conditions for personnel.

Service from outside the freezer:

Dedicated technical space allows technicians to service refrigeration equipment without entering the ULT chamber.

Additional safety provisions
An internal safety handle mechanism and an optional emergency wire-stop alarm provide additional personnel protection.

Our doors are engineered for optimal insulation and minimal energy loss, playing a vital role in the LSSU’s overall low energy consumption.

The LSSU’s dimensions and configuration can be tailored to your facility and project requirements, including brownfield projects. Height, width and depth are evaluated alongside capacity, available space and service access.

Compressor skids can be positioned above or beside the freezer, allowing different configurations to accommodate available ceiling height and floor space.

Inside, trolleys, racks, pallets and other storage formats are configured around your products, packaging and handling needs, while maintaining the airflow required for temperature control.

Involve LOWENCO early to explore configurations before your facility layout is fixed.

The intelligent airflow system ensures precise temperature uniformity inside the chamber.

We hold a patent for our invented airflow duct system, which minimize heat impact during defrost and maintanence.

This results in a stable product temperature with a variation of only ±1°C.

The LSSU features a built-in redundancy setup, designed to ensure continuous operation, even if a component failure occurs.

Each LSSU is equipped with dual independent refrigeration systems, (class N+1) meaning that if one circuit or compressor fails, the second automatically switch over and maintains the required temperature.

This guarantees uninterrupted performance and full product protection, which we define as a must in 2026, for critical and sensitive product storage environments.

PHARMACEUTICAL ULT FREEZER

Modular Pharmaceutical Cold Storage Designed to Reduce Facility Footprint

Start with the pharmaceutical cold storage capacity you need today and expand your ultra-low temperature storage as demand grows.

Our modular pharmaceutical cold storage solution is designed for large-scale vaccine and pharmaceutical manufacturing facilities. New ULT storage modules can be added without interrupting operations or causing downtime.

Each freezer module operates independently, allowing pharmaceutical manufacturers to store temperature-sensitive products at different temperature setpoints within one fully integrated cold storage system.

The modular design enables pharmaceutical companies to increase storage capacity while reducing facility footprint by up to 75% compared with traditional upright freezer farms.

Q1: What is the storage capacity and temperature range of the LOWENCO LSSU?

The LOWENCO Large-Scale Storage Unit (LSSU) provides a storage capacity of up to
4,800 kg/L per unit, effectively consolidating up to 42 traditional upright freezers into
one centralized system. It maintains a secure and uniform temperature range from
+20°C to -80°C with a temperature uniformity of ±1°C across the stored products,
ensuring optimal conditions for APIs, vaccines, and biologics.

Q2: How does the LSSU reduce energy consumption in ULT storage facilities?

The LSSU is designed for superior energy efficiency, delivering up to 66% lower power
consumption compared to traditional freezer farms. Furthermore, it can reduce HVAC energy consumption by up to 98%, as excess heat is expelled directly to the
atmosphere through a drycooler rather than being released into the facility. This intelligent design contributes to a carbon footprint reduction of up to 73% Year-over Year.

Side-by-side comparison

Faktabox - splat (3)

Traditional ULT Freezer Farm

Multiple standalone freezers operating independently, each demanding its own energy, service and maintenance.

Higher operational costs, as multiple standalone freezers each consume significant energy
Increased HVAC energy use due to cumulative heat output from many units
Larger carbon footprint caused by higher overall energy consumption
Temperature uniformity ±6°C
Typically no built-in redundancy
Maintenance activities can require system interruption or downtime

Documented test results

Faktabox - splat ny.

LOWENCO LSSU

A large-scale storage system operating as one complete solution requiring shared energy, centralized service and simplified maintenance.

Up to 66% lower power consumption based on intelligent design and advanced cooling technology use
98% less HVAC energy consumption due excess heat is expelled to the atmosphere through a drycooler.
Up to 73% smaller carbon footprint over 10 years due to system design & refrigerant type
Temperature uniformity on products ±1°C
Full redundancy with dual independent systems
Service and maintenance access during operation - no downtime

LSSU product brochure

Get a quick overview of our Large-Scale Storage Unit (LSSU) and how it deliver reliable and energy-efficient ultra-low temperature storage.

Choosing the right ULT storage setup for your facility

This document gives you a clear, data-based comparison between traditional upright freezers and modular large-scale systems, helping you make informed decisions for both current and future storage needs.

Full engineering specification

Explore the complete technical specifications of our ULT integrated turnkey solution, including design, performance data and engineering requirements.

LSBU (Blast) datasheet

Get a quick overview of our Large-Scale blast Unit (LSBU) and how it delivers rapid freeze/thaw function.

Can you have different temperature settings in the LSSU or can you change the temperature after installation?

Our compressor skid is designed for flexibility and easy converting to another temperature setpoint:

✔ +10°C to –40°C on the same skid
✔ –40°C to –80°C on the same skid

How do you manage small amounts of inventory in the large scale LSSU?

The LSSU can be configured with different storage formats tailored to your needs. Whether you work with bottles, bags, Cryovault containers or full pallets of small products , we customize the internal layout to ensure maximum density and safe handling.

What is the average lead time for the LSSU units?

Lead times typically start from 3 months and up.

Do special considerations need to be made to prevent perma frost on concrete below the LSSU?

Yes. To prevent permafrost buildup, we provide a built-in underfloor ventilation system.

A dedicated fan and duct network continuously moves air between the LSSU base and the concrete, ensuring no cold migration into the slab.

Do you provide local maintenance services?

Yes. We work with LOWENCO certified local technicians in both EU and US.

And we are expanding with a dedicated Asian service team soon, to enhance global support.

How does the LSSU differ from large walk in cold storage?

The LSSU freezer is developed specific for ultra-sensitive biologics that tolerate no temperature excursions at all.

Large walk-in cold rooms cannot deliver controlled, uniform temperatures throughout the complete storage space, which the LSSU can.

The LSSU is engineered for pharmaceutical-grade uniformity (±1°C on products), fast recovery and stable conditions on a level traditional walk-ins simply cannot achieve.