A blast chiller is a refrigerated cabinet built to pull hot food down to refrigerator temperature fast, using high velocity cold air and a probe that reads the core of the food. A reach-in refrigerator is built to hold food that is already cold. If your kitchen cooks soups, sauces, rice, braises or proteins in batches and cools them for later service, a blast chiller is the tool made for that step. Here is how they work, the cooling rule they help you meet, and how to size one from the specs on our listings.
What a blast chiller does that a refrigerator does not
A reach-in refrigerator has a compressor sized to hold a box at about 38 F with the door opening now and then. Put a full hotel pan of hot chili inside and the cabinet warms up, the center of the pan stays warm for hours, and the food around it warms too.
A blast chiller has a much larger refrigeration system for its size and fans that push cold air across every pan. You insert a probe, choose a program, and the unit runs until the food core reaches the target, then usually switches to a holding mode. It sits between the stove and cold storage; it does not replace your walk-in. For storage, see our reach-in refrigerator sizes guide.
The food cooling rules a blast chiller helps you meet
Section 3-501.14 of the FDA Food Code 2026 says cooked time/temperature control for safety food “shall be cooled: (1) Within two hours from 57ºC (135ºF) to 21ºC (70ºF); and (2) Within a total of six hours from 57ºC (135ºF) to 5ºC (41ºF) or less.” The 2022 edition uses the same numbers. Section 3-501.15 lists accepted methods, including shallow pans, smaller portions, ice baths and “rapid cooling equipment.”
A blast chiller does not make food safe by itself. Overloading it, using deep pans or covering pans tightly can still miss the window. You still need calibrated thermometers, written procedures and cooling logs, often as part of a HACCP plan. Your local health department enforces the code version your state or county adopted, so check with them before building a cook-chill program.
Blast chiller vs blast freezer (shock freezer)
A blast chiller brings food to refrigerator temperature. A blast freezer, also sold as a shock freezer, keeps going below freezing for frozen storage. The buying question is simple: do you freeze product in house, or only chill it?
- The Traulsen TBC and Centerline by Traulsen CLBC models are listed as blast chillers, rated from 160 F to 40 F.
- The U-Line Commercial units are listed as blast chiller/shock freezers, with a minus 40 F to 50 F range and separate chill and freeze yields. The reach-in models list soft chill, hard chill, soft freeze, hard freeze, thawing and holding cycles.
Soft chill is generally used for delicate items, hard chill for dense items like roasts or deep pans of rice. The Traulsen TBC5 listings mention four chill settings without naming them.
How to size a blast chiller by batch
- Add up the pounds you cool in your biggest single window, such as the end of morning prep.
- Count the shallow pans that food will be spread across.
- Compare against rated yield and pan capacity, and leave headroom.
Ratings are not apples to apples. Traulsen rates from 160 F to 40 F; U-Line rates from 194 F to 37 F in 90 minutes. Neither starts at the Food Code’s 135 F, and real times depend on the food, pan and load. Compare models within a brand, then verify your process with a probe and a log.
Undercounter, reach-in and roll-in models
Undercounter
The Centerline by Traulsen CLBC4-L chills up to 32 lb from 160 F to 40 F, holds 4 sheet pans and runs on 115 V. The U-Line UCBF432 5 tray adds shock freezing and a multi-core probe with 4 reading points, also on 115 V. The Traulsen TBC5-51 moves up to 100 lb in 180 minutes, with three removable probes and a USB port.
Reach-in
The Centerline CLBC7-L holds 7 sheet pans with a 56 lb yield. The U-Line UCBF532 10 tray and UCBF632 15 tray chill and freeze on 230 V. The Traulsen TBC13-31 has 13 levels and chills up to 200 lb in 140 minutes with a dual self-contained system.
Roll-in
Roll-in units take a full speed rack or combi oven cart, so food goes from oven to chiller without unloading. The U-Line UCBF559 1 trolley roll-in lists a 440.93 lb chill yield and a remote condensing unit with up to a 33 foot run. Pairing with a combi? See our combi oven vs convection oven guide.
Blast chiller comparison table
| Model | Type | Chill yield (as listed) | Freeze yield | Pans | Power | Price |
|---|---|---|---|---|---|---|
| U-Line UCBF432 | Reach-in, about 33 in tall | 44.09 lb, 194 to 37 F, 90 min | 26.46 lb | 5 sheet or 2 steam table | 115 V, NEMA 5-20P | $9,908.00 |
| Centerline CLBC4-L | Undercounter | 32 lb, 160 to 40 F | No | 4 sheet or 8 12 x 20 | 115 V, 16 A, NEMA 5-20P | $13,116.00 |
| Centerline CLBC7-L | Reach-in | 56 lb, 160 to 40 F | No | 7 sheet or 14 12 x 20 | 208 to 230 V, NEMA 6-20P | $14,733.00 |
| U-Line UCBF532 | Reach-in | 77.16 lb, 194 to 37 F, 90 min | 55.11 lb | 10 sheet or 5 steam table | 230 V, plug not included | $16,957.00 |
| U-Line UCBF632 | Reach-in | 143.3 lb, 194 to 37 F, 90 min | 110.23 lb | 15 sheet or 7 steam table | 230 V, plug not included | $21,271.00 |
| Traulsen TBC5-51 | Undercounter | 100 lb, 160 to 40 F, 180 min | No | 5 sheet or 10 12 x 20 | Not listed | $36,702.27 |
| U-Line UCBF559 | Roll-in | 440.93 lb, 194 to 37 F, 90 min | 385.81 lb | 1 speed rack or combi cart | 230 V, remote condenser | $41,257.00 |
| Traulsen TBC13-31 | Reach-in | 200 lb, 160 to 40 F, 140 min | No | 13 sheet or 26 12 x 20 | Not listed | $60,982.52 |
Prices are at the time of writing; confirm on the product page. See every model on our Traulsen brand page.
Probes, controls and logging
Every model above lists at least one food probe. The U-Line units add a touch screen with a HACCP data tracker and alarms. Built-in records help, but ask your inspector whether they accept them as your cooling log or want a written one.
Installation: power, clearance and condensers
- Electrical: the UCBF532 and UCBF632 ship without a plug and list NEMA L15-30P as recommended. Have a licensed electrician confirm the circuit before delivery.
- Condenser: most models here are self-contained and reject heat into the kitchen. The UCBF559’s remote condensing unit needs its own location and line set, a job for a licensed refrigeration contractor.
- Space: check door swing, ventilation clearance in the spec sheet and the path through your doors.
Local building, electrical and health codes have the final word.
Frequently asked questions
Do I need a blast chiller to meet food cooling rules?
Not always. The Food Code accepts shallow pans, ice baths and other methods. A blast chiller makes the two and six hour windows easier with large batches. Your health department decides what works for your operation.
Blast chiller vs freezer: what is the difference?
A blast chiller stops at refrigerator temperature. A blast freezer or shock freezer goes below freezing. The U-Line Commercial models on our site do both.
Can I store food in a blast chiller?
Many have a holding mode after a cycle, but they are built for cooling. Move finished food to your walk-in so the chiller is ready for the next batch.
For more planning, see our commercial kitchen equipment guide. Questions about a blast chiller, voltage or freight? Call 866-777-2590, Mon-Fri 9AM-6PM PST. Orders of $999 or more ship free; smaller orders ship for a $200 flat rate. See our return and refund policy.
