Air cold enough to work
Air at -30 to -45°C pulls product from +5°C through the freezing curve. Cold air matters, but airflow across every product surface matters just as much. A cold room with blocked airflow still freezes slowly.
Freeze the batch before quality starts leaving.
Product that freezes too slowly pays you back later in drip loss, damaged texture, and lower yield. We size the blast from the product, entering temperature, packaging, tons per batch, and hours per cycle.
Then we install the room and the refrigeration and back it with a maintenance plan. Built by operators who know what happens upstream and downstream of the freezer.
The batch sets the equipment
Throughput before room size
Example configurations handle 15–30 tons per batch, reach a full freeze in under 6 hours, and move up to ~60,000 m³/hr across the product. Your product and cycle decide whether those numbers fit.
Plant sized to the cycle
Bitzer screw-compressor racks sized in HP to the batch, matched with high-efficiency floor-mounted evaporators and PLC control. The plant has to recover on schedule without wasting capacity between batches.
Envelope built for blast
150–200mm PIR panels at 42 kg/m³, FM-approved, plus a reinforced insulated floor with layered XPS, SBS waterproofing, and a vapor barrier. The floor has to take the cold and the forklift traffic.
One compressor can drop
Parallel compressor design keeps capacity available if one unit drops. Redundancy costs more at the start. A loaded blast freezer with no refrigeration is a product write-off, missed production, and an emergency service call.
One configuration, not your answer
| Specification | |
|---|---|
| Capacity | 15–18 tons per day |
| Footprint | 10 × 4.8 m, 3.5 m high |
| Insulation | 150mm PIR panels (180 / 200mm available) |
| Compressor | 1 × 75 HP Bitzer screw compressor |
| Condenser | Air-cooled |
| Air cooler | Vertical fan design, 500 m² heat-exchange area, 6 high-efficiency fans |
| Floor | 4 × 50mm XPS layers, 3mm SBS waterproofing, 2 PE vapor barriers |
| Door | 1.8 × 2.4 m sliding (customizable) |
| Controls | Schneider panel — phase, over/under-voltage, overload; remote monitoring |
This is one real configuration, not a promise. Product thickness, entering temperature, packaging, loading pattern, and batch cycle all change the answer. We calculate yours from the product and the production schedule.
The blast has to fit the line.
A blast that clears product faster than the packing line can feed it leaves expensive capacity waiting. One that falls behind becomes the bottleneck and pushes product into staging.
We ran a food line for 25+ years before we built freezers for other operators. We start with how product arrives, how it's loaded, when the next batch is ready, and where frozen product goes. Then we size the room, install it, and back it with a maintenance plan.
What a blast freezer is built from
Cryo SystemsBitzer Two Stages Blast FreezerThe Bitzer Two Stages Blast Freezer from Cryo Systems uses a Bitzer semi-hermetic two-stage piston compressor, from 5 to 120 HP, for low-temperature blast freezer and freezer rooms.
Signal PackSPT 200-1000: Mechanical Spiral Freezer SystemThe SPT 200-1000 Mechanical Spiral Freezer from Signal Pack freezes product continuously on a plastic modular belt that spirals 18 turns through cold air, up to 1,700 pieces an hour, for dumplings, cutlets, meatballs, pizza and chicken.
Cryo SystemsBlast Chiller & Freezer EvaporatorsBlast Chiller & Freezer Evaporators from Cryo Systems come as the DJ series unit cooler for rooms at −40 to −13°F (−40 to −25°C) and the JE series floor-standing coil, 18 to 100 kW (about 61,400 to 341,000 BTU/h) with 10 mm fins.
Cryo SystemsCompressor Rack SystemThe Compressor Rack System from Cryo Systems runs several Bitzer semi-hermetic piston or screw compressors as one system, from 18 HP up, with an air-cooled, water-cooled or evaporative condenser.
Cryo SystemsBitzer Condensing UnitThe Bitzer Condensing Unit from Cryo Systems pairs a Bitzer ECOLINE semi-hermetic piston compressor with an air-cooled copper-tube, aluminum-fin condenser.
Gór-StalGS insPIRe CH Freezer PanelsGS insPIRe CH freezer panels from Gór-Stal are PIR-core panels for walls and ceilings in cold rooms and freezers, mounted vertically or horizontally.
ARM Doors480 LWT Automatic Freezer Sliding DoorThe 480 LWT Automatic Freezer Sliding Door from ARM Doors is a sliding door with an 80 mm (3.1 in) panel of polyurethane foam, 43 kg/m³ density, covered in Glasbord ArmorTuf laminate.
Questions we answer every week
What temperature does a blast freezer run at?
The air normally runs at -30 to -45°C and moves hard across the product. Speed matters because fast freezing forms small ice crystals. Slow freezing forms large crystals that damage cell walls, which shows up later as drip loss, weak texture, and lower yield. Colder air alone doesn't guarantee a fast cycle. Packaging, product thickness, spacing, and the loading pattern can still block airflow, so we calculate and test the complete batch.
How much product can a blast freezer freeze per batch?
Room size is only one part of the answer. Product thickness, entering temperature, packaging, loading pattern, and airflow decide how quickly the center freezes. Example rooms handle 15–30 tons per batch with a full freeze in under 6 hours, but that's not a promise for every product. Give the calculator your throughput and cycle target, then we verify the result against the actual product before any equipment is ordered.
Do I need both a blast freezer and a storage freezer?
Usually, yes. The blast freezer uses heavy refrigeration and airflow to pull warm product down fast. The walk-in freezer holds already-frozen product with far less running capacity. Using the blast for storage wastes power and ties up production equipment. Asking a storage freezer to blast product gives you a slow, uneven freeze. We size the blast to the packing line and the storage room to the inventory you need to hold.
- Remote monitoringFaults surface early
- Electrical protectionPhase and voltage
- Stocked wear partsHours, not days
- Maintenance plansWe install it
Based in Roselle, NJ · maintenance plans across our NJ tri-state service area
We install across NJ, NY, PA, New England, and the Mid-Atlantic with our own crews. Equipment supply is available beyond that footprint.
Start with the batch and the cycle.
Choose Blast freezer in the estimator for a planning estimate. Or send the product, entering temperature, packaging, tons per batch, and cycle time, and we'll tell you what the room has to do.