Blast Chiller and Cook-Chill Buying Guide: Capacity, Cycles and Power
Buying Guide · Refrigeration & Cold Holding
Choose a Blast Chiller That Matches Your Batches, Your Pans and Your Power
A blast chiller pulls heat out of freshly cooked food fast, so soups, sauces, braises, rice and baked goods pass through the danger zone quickly and go into storage at a safe temperature. It is the piece that makes cook-chill production work.
Use this guide to understand cook-chill, compare chill and freeze cycles, size a unit by batch weight and pan count, and check the power before you buy.
Start With What You Cook Ahead
List what you cook in batches and cool before service: stocks, soups, sauces, chili, braises, rice, cooked proteins, par-baked bread, pastry. Then estimate the weight of your largest batch and how many batches you cool in a day.
Those two numbers, plus the pans you already use and the power you have, decide the size of blast chiller you need.
Best-Fit Operations
Blast chillers suit any kitchen that cooks ahead in volume and stores food for later service.
How Cook-Chill Works
Cook it, chill it fast, store it cold, reheat it to order.
Cook the batch as usual. Chill it right away in a blast chiller, ideally in shallow pans with the core probe in the thickest part. Label each pan with the item and date. Store it at 4°C (40°F) or colder, below the danger zone Health Canada defines as 4°C to 60°C (40°F to 140°F), in a reach-in refrigerator or walk-in.
At service, reheat portions in a rethermalizer or oven. Health Canada advises reheating leftovers to 74°C (165°F). Then hold hot at 60°C (140°F) or higher. Taking cook-chill food to events? See the Catering Equipment and Supplies Buying Guide.
Canadian public health guidance commonly uses a two-stage cooling rule: from 60°C (140°F) to 20°C (68°F) within 2 hours, then to 4°C (40°F) or colder within 4 more hours. A blast chiller makes those limits far easier to meet with large batches. Follow your local health authority's rules and keep a cooling log.
Why kitchens add one
- Cook larger batches on slower days.
- Cool food safely and consistently.
- Spread prep across the week.
- Support banquets, catering and multi-site production.
| Step | What happens | Equipment |
|---|---|---|
| Cook | Batch cooked to the recipe | Ranges, kettles, ovens |
| Chill | Core temperature brought down fast, with a probe | Blast chiller |
| Label and store | Dated pans held at 4°C (40°F) or colder | Reach-in or walk-in refrigeration, food storage containers |
| Reheat | Portions brought back to 74°C (165°F) | Rethermalizers, ovens |
| Hold and serve | Held hot at 60°C (140°F) or higher | Food warmers, holding cabinets |
Chill, Freeze or Both?
Every Gemm model we carry runs chill and freeze cycles.
A blast chill cycle brings cooked food down to refrigerator temperature. Gemm rates its chill cycle at 90 minutes to about 3°C (37°F).
A blast freeze cycle takes food on down to freezer temperature for longer storage. Gemm rates its freeze cycle at 240 minutes to about -18°C (0°F). Fast freezing suits pastry, portioned proteins, par-baked bread and sauces you hold for weeks rather than days.
Cycle styles differ by model. The BCB15USN lists gentle chilling, rapid chilling and deep-freeze programs; the BCB05USN has seven built-in programs; the BCT models add a capacitive touchscreen, a recipe book and fully customisable cycles. Gentler cycles suit delicate or thin items, while faster, colder cycles suit dense food.
Pick by what you store
- Days: chill cycle, then refrigerate.
- Weeks: freeze cycle, then a freezer.
- Delicate items: a gentle cycle.
- Repeat recipes: stored programs.
How Much Capacity Do You Need?
Size by batch weight per cycle, then check the pan count.
Weigh your largest batch, then compare it with the chill capacity per cycle. Gemm rates its models from 48 lb to 154 lb per 90-minute chill cycle. If you cool several batches a day, count the cycles you can run between cooking and storage.
The capacities below come from Gemm's spec sheets, which use different starting temperatures for the two series: 90°C (197°F) for the BCB models and 65°C (149°F) for the BCT models. Dense food, deep pans and lids slow chilling, so leave a margin rather than buying to the exact figure.
Sizing questions
- How many pounds in your largest batch?
- How many batches a day?
- Chill only, or freeze as well?
- How many pans per batch?
| Model | Tray positions | Chill, 90 min | Freeze, 240 min |
|---|---|---|---|
| BCB05USN | 5 | 48 lb (22 kg) from 90°C | 26.5 lb (12 kg) from 90°C |
| BCB10USN | 10 | 95 lb (43 kg) from 90°C | 73 lb (33 kg) from 90°C |
| BCB15USN | 15 | 154 lb (70 kg) from 90°C | 132 lb (60 kg) from 90°C |
| BCT10USN | 10 | 81.5 lb (36 kg) from 65°C | 53 lb (24 kg) from 65°C |
| BCT15USN | 15 | 150 lb (68 kg) from 65°C | 108 lb (48 kg) from 65°C |
Pans, Trays and Loading
Shallow pans and open air chill fastest.
The Gemm models take GN 1/1 pans or full-size 18" x 26" sheet pans. Tray positions are spaced about 2.6" apart, so plan on shallow food pans and sheet pans rather than deep stockpots. The BCT models include racking for both GN 1/1 and 18" x 26" pans.
Spread food in an even, shallow layer, leave space between pans for air to move, and put the core probe in the thickest part of the densest pan. Cover or wrap food after it is chilled, not before, unless the manufacturer says otherwise.
Loading habits
- Portion large batches into shallow pans.
- Do not stack pans on top of each other.
- Probe the thickest item.
- Label and date before storage.
Power and Installation
One 115V model; the rest need 220V to 230V.
The Gemm BCB05USN is the only 115V model. It draws 13 amps with a NEMA 5-20P plug, so it needs a 20-amp receptacle rather than a standard 15-amp outlet.
The BCB10USN and BCT10USN run on 220V to 230V with a NEMA 6-20P plug. The BCB15USN is 230V; check the listing for its plug. The BCT15USN is listed as hardwired, so an electrician makes the connection.
These are heavy units, from 238 lb for the BCB05USN to 500 lb for the BCB15USN, and they ship by freight. Check doorways and the route to the kitchen, and leave the clearance Gemm specifies around the unit for airflow.
Check before you order
- Voltage and plug on the listing.
- A matching receptacle, or an electrician.
- Doorways and delivery route.
- Clearance for airflow.
| Model | Electrical | Plug | Net weight |
|---|---|---|---|
| BCB05USN | 115V, 13 A | NEMA 5-20P | 238 lb (108 kg) |
| BCB10USN | 230V, 10 A | NEMA 6-20P | 348 lb (157 kg) |
| BCB15USN | 230V, 10 A | See listing | 500 lb (226 kg) |
| BCT10USN | 220V, 1871 W | NEMA 6-20P | 364 lb (165 kg) |
| BCT15USN | 230V, 3050 W | Hardwired | 412 lb (186 kg) |
Blast Chillers at Russell Hendrix
Our range is built around Gemm, made in Italy.
| Model | Tray positions | Controls and features (per listing) | Height |
|---|---|---|---|
| Gemm BCB05USN | 5 | Touch display; 7 built-in programs; core probe; R290 | 37.8" |
| Gemm BCB10USN | 10 | LED control panel; time and probe modes; R290 | 61.4" |
| Gemm BCB15USN | 15 | LED control panel; gentle, rapid and deep-freeze programs; automatic defrost; R290 | 74.8" |
| Gemm BCT10USN | 10 | Capacitive touchscreen; recipe book; custom cycles; core probe; racking included; R290 | See spec sheet |
| Gemm BCT15USN | 15 | Capacitive touchscreen; recipe book; custom cycles; core probe; racking included; R290 | See spec sheet |
All five are listed with cETL US and ETL Sanitation certification and a 1-year warranty plus 3 years on the compressor. Check the spec sheet on each listing for full dimensions.
Common Mistakes to Avoid
Most blast chiller regrets come down to capacity, pans and power.
Sizing by tray count alone
Check pounds per cycle against your batch.
Chilling in deep pans
Shallow pans chill far faster.
Covering food too early
Let heat escape, then cover.
Skipping the probe
Chill to core temperature, not by the clock.
Missing the 20-amp outlet
The 115V model uses a NEMA 5-20P plug.
Forgetting the hardwire
The BCT15USN needs an electrician.
No storage plan
Chilled food still needs space at 4°C.
No labels or log
Date every pan and record cooling.
Frequently Asked Questions
Short answers to the questions we hear most about blast chillers and cook-chill.
What does a blast chiller do?
A blast chiller pulls heat out of freshly cooked food fast, using cold, high-velocity air, so food passes through the danger zone quickly. It then goes into a refrigerator or freezer for storage. Gemm rates its chill cycle at 90 minutes to bring food down to about 3°C (37°F).
Can I cool hot food in a regular refrigerator instead?
A reach-in refrigerator is built to keep cold food cold, not to remove heat from large hot batches. Hot pans raise the cabinet temperature and can put other food at risk. Use a blast chiller, or shallow pans and ice baths, then move food to the refrigerator.
What is the cooling rule in Canada?
Canadian public health guidance commonly uses a two-stage rule: cool cooked food from 60°C (140°F) to 20°C (68°F) within 2 hours, then to 4°C (40°F) or colder within 4 more hours. Check the rules from your local health authority.
Do the Gemm blast chillers also freeze?
Yes. Gemm's spec sheets list both a 90-minute chill cycle and a 240-minute freeze cycle to about -18°C (0°F) for all five models we carry. The BCT models add a touchscreen with a recipe book and customisable cycles.
How do I size a blast chiller?
Start with the weight of food you cook in one batch, then compare it with the chill capacity per cycle. The Gemm models chill 48 lb to 154 lb per 90-minute cycle, per the spec sheets. Dense food, deep pans and lids slow chilling, so leave a margin.
What power does a blast chiller need?
The Gemm BCB05USN runs on 115V with a NEMA 5-20P plug, which needs a 20-amp receptacle. The BCB10USN and BCT10USN are 220V to 230V with a NEMA 6-20P plug. The BCT15USN is listed as hardwired, so an electrician connects it.
What pans fit in a Gemm blast chiller?
The Gemm models take GN 1/1 pans or full-size 18" x 26" sheet pans, with 5, 10 or 15 tray positions spaced about 2.6" apart. Shallow pans chill fastest.
When to Involve a Specialist
Cook-chill decisions are easier with your menu and batch sizes in front of us.
A specialist can review your menu, batch weights, pans, storage and electrical supply, and help you choose a blast chiller and plan the installation.
Bring in Sales when
- You are setting up cook-chill or a commissary.
- You need to chill and freeze.
- You are not sure about 115V vs 230V.
- You need a size or style not listed online.
Go Deeper
Guides that go deeper on refrigeration, storage and batch production.
Commercial Refrigeration Buying Guide
Reach-ins, prep tables and more by operation.
Walk-In Cooler and Freezer Buying Guide
Bulk storage after the chill.
Commercial Vacuum Sealer Buying Guide
Bag portions for cook-chill and sous vide.
Countertop Food Warmers Buying Guide
Rethermalizers for reheating.
Healthcare Cooking Equipment Guide
Batch production for care settings.
Hotel and Banquet Cooking Equipment Guide
Volume cooking for events.
Plan the Batch, Then Choose the Chiller
The strongest choices connect the menu, the batch weight, the pans, the storage and the power before any purchase is final.
Planning a whole kitchen? The Opening Journey walks through the concept, menu, space, workflow and equipment list in order.
