Cold Storage Blast Freezer: Sizing, Checklist and RFQ
Blast freezing pulls product from chilled or ambient temperature to a frozen core (typically −18 °C) in hours, using high-velocity air at around −35 °C to −40 °C. Use the planning calculator below to estimate refrigeration duty, run through the specification checklist, then send a structured request — ColdMatch reviews every request manually before researching suitable suppliers.
What ColdMatch delivers
- Product type, packaging and core temperature in / out
- Batch size (kg) and target freezing time (hours)
- Room or tunnel air temperature and air velocity
- Loading method: trolleys, pallets or racks
- Site ambient temperature and available power
- Where frozen product goes next: holding store or dispatch
You submit one RFQ. Our team handles the supplier outreach.
There is no direct buyer-to-supplier connection. Your request comes to the ColdMatch team, which contacts suitable suppliers and manufacturers on your behalf. Supplier and manufacturer information on this site is for research only; it is not a contact directory and does not mean a supplier has been vetted.
- You build your project and submit an RFQ.
- The ColdMatch team validates and organizes the requirements.
- We contact suitable suppliers and manufacturers for you.
- We present their organized responses to you through ColdMatch.
Supplier and manufacturer information is provided for research only; it is not a directory for direct contact. There is no direct buyer-to-supplier connection: every RFQ comes to the ColdMatch team, which validates it, contacts suitable suppliers on the buyer's behalf and presents organized responses through ColdMatch.
Buyer brief · blast freezer
Blast freezer sizing: tonnes per day, not cubic metres
Blast freezers are specified by throughput: how many tonnes per day, of which product, frozen from what entry temperature to what core temperature in how many hours. Packaging, product thickness and air flow drive the freezing time. A blast freezer quote without these conditions cannot be compared with another.
| Specify in your request | Why |
|---|---|
| Tonnes per day and batch size | Sets evaporator and compressor capacity. |
| Product, packaging and thickness | Thick or boxed product freezes far slower than loose product. |
| Entry and target core temperature | Defines the total heat to remove per batch. |
| Required freezing time per batch | Shorter cycles need more capacity and air flow. |
| Downstream frozen storage capacity | Blast output must fit the holding room's daily intake. |
Planning limits
- Freezing times are product-specific; suppliers should confirm with their own calculation or tests.
Free for buyers; manual review for industrial projects from USD 250,000. · Last reviewed 12 Oct 2026
Blast freezer duty calculator
Estimated refrigeration duty: 27.4 kW
Planning estimate using typical meat/fish properties plus 30% for fans, infiltration and margin. Not an engineered load calculation.
Send these figures as an RFQBlast freezer specification checklist
- ☐ Product, packaging and carton size confirmed
- ☐ Core temperature in and required core temperature out
- ☐ Batch size and freezing time per cycle
- ☐ Cycles per day and loading method
- ☐ Air temperature, velocity and defrost method
- ☐ Refrigerant preference (ammonia, CO₂, HFO) and site ambient
- ☐ Floor heating, door type and panel thickness
- ☐ Monitoring, alarms and food-safety records
Projects from USD $250K+. Start your RFQ
Frequently asked questions
How ColdMatch Group works — independent B2B procurement and sourcing platform — ColdMatch Group is an independent B2B procurement and sourcing platform for industrial refrigeration, cold storage and cold-chain projects from USD $250K+, where the ColdMatch team reviews each buyer brief, contacts suitable third-party suppliers on the buyer's behalf and organizes their responses.
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Back to Guides HubTake this to a structured refrigeration RFQ
Refrigeration bids are only comparable when refrigerant, duty, evaporating temperature, redundancy and controls are specified. Qualify the design intent, then issue one RFQ.
Supplier-neutral. Free for buyers and project owners. Best suited to commercial projects from USD $250,000.