The Ultimate Guide to Blast Freezers and Blast Chillers: How They Revolutionise Food Preservation

“Blast freezers and blast chillers” may sound like something out of a sci-fi movie, but in the world of food preservation, they’re essential tools that have revolutionised the way we keep our food fresh. In this comprehensive guide, we’ll delve into the functions and benefits of blast freezers and blast chillers in the food industry, shedding light on their crucial role in preserving food quality and extending shelf life (ESL), including the latest process in the Cook Chill industry known as Long Life Fresh Food (LLFF), pioneered by Regethermic. Regethermic was the first to introduce Blast Chiller and Blast Freezer technology in Australia, with over 50 years of experience in cook-chill technology.

Understanding Blast Freezers and Blast Chillers

Let’s start with the basics: what exactly are blast freezers and blast chillers? Essentially, they are specialised refrigeration units designed to rapidly cool or freeze food items. Unlike conventional refrigerators or freezers, which operate at slower speeds, blast freezers and chillers use high-powered compressors to circulate cold air at high velocities, drastically reducing the temperature of food products in a fraction of the time.

Functions of Blast Freezers and Blast Chillers

  1. Rapid Cooling and Freezing: The primary function of blast freezers and chillers is to rapidly cool or freeze food items. This swift process helps to lock in the freshness and nutrients of the food, preventing bacterial growth and preserving its quality.
  2. Preservation of Texture and Flavour: By quickly bringing down the temperature of food products, blast freezers and chillers help to preserve their texture, taste, and overall quality. This is especially crucial for delicate items such as seafood, meats, and pastries, where maintaining freshness is paramount.
  3. Extended Shelf Life with LLFF: Blast freezers and chillers, particularly when integrated with LLFF technology pioneered by Regethermic, can extend the shelf life (ESL) of perishable goods even further. LLFF, or Long Life Fresh Food, is a cutting-edge process that minimises the formation of ice crystals during freezing, preserving the integrity of the food and extending its shelf life significantly.
  4. Safety Assurance: Rapid cooling and freezing also play a vital role in food safety by minimising the risk of bacterial contamination. By swiftly lowering the temperature of food products, blast freezers and chillers help to inhibit the growth of harmful bacteria, reducing the likelihood of foodborne illnesses. Food Safety Standards are met and excelled according to Hazard Analysis and Critical Control Points (HACCP).

Benefits of Blast Freezers and Blast Chillers

  1. Improved Efficiency: Compared to traditional cooling methods, blast freezers and chillers offer unparalleled speed and efficiency. This means that food items can be cooled or frozen in a fraction of the time, allowing for faster processing and turnaround times in commercial kitchens and food production facilities.
  2. Cost Savings: While the initial investment in blast freezing and chilling equipment may be higher than traditional refrigeration units, the long-term cost savings can be significant. By extending the shelf life of food products and reducing waste, businesses can minimise losses and improve their bottom line over time.
  3. Enhanced Quality Control: Consistency is key in the food industry, and blast freezers and chillers provide precise control over the cooling process. This ensures that food items are cooled or frozen uniformly, resulting in consistent quality across batches.
  4. Versatility: Blast freezers and chillers are incredibly versatile tools that can accommodate a wide range of food products, from delicate pastries to hearty meats. This versatility makes them indispensable in various food-related industries, including health, aged care, hospitality, tourism, restaurants, bakeries, catering services, and food manufacturing plants.


In conclusion, blast freezers and blast chillers, particularly when integrated with LLFF technology pioneered by Regethermic prove to be indispensable tools that have revolutionised the way we cook & chill food. By rapidly cooling or freezing food items while minimising ice crystal formation, these units help to maintain freshness, extend shelf life (ESL), and ensure food safety standards are met (HACCP). Whether you’re running a bustling restaurant kitchen or a large-scale food production facility, investing in blast freezing and chilling equipment can have a profound impact on the speed, quantity, quality, and longevity of your products.  Get in touch with Regethermic today to discuss your blast freezer or blast chiller requirements.


1300 138 026


1300 138 026


+603 8740 4966