Upright blast chillers rapidly drop core temperature on hot food to under 3°C inside 90 minutes — the HACCP-defined threshold that prevents bacterial multiplication and lets central kitchens batch-cook for downstream service. Hospitality Connect stocks the upright range from Polaris, Skope, Friginox, Tecnomac, MODI, Vision NUVO and Thermaster, in tray counts from 5 to 20 GN 1/1 and 2/1 capacities and full roll-in formats for trolley loading.
Types of upright blast chiller
- 5–10 tray reach-in chillers: Compact uprights for cafés, dessert bars and small kitchens — single-phase 240V on most 5-tray models, 415V three-phase from 10 trays up.
- 14–20 tray reach-in chillers: Mid-volume uprights for restaurants and central kitchens. Tecnomac Black Kube, MODI W14U/W20U and Polaris 16-tray are the workhorse picks.
- Roll-in trolley chillers: Friginox UMX series and Polaris RI cabinets accept 1/1 GN trolleys for bakery and high-volume catering — eliminate manual tray-by-tray loading.
- Multi-function chiller/freezer combos: Polaris and Skope MultiFresh Next units chill to +3°C and shock-freeze to –18°C in the same cabinet.
- Plus-mode hold cabinets: Vision NUVO and Skope cabinets that double as positive-temperature holding for proofing or thawing post-chill cycles.
Sizing for chilling and freezing capacity
Manufacturers rate units in kg of chilled product per cycle — typically 30–85kg chilling and 22–70kg freezing, measured against a starting core temperature of 90°C. A 10-tray Polaris chills 60kg and freezes 48kg; a 16-tray pushes 70–85kg. Plan for two cycles per shift on bulk-cook days; size up if your menu includes thick stocks, braises or dense bakery items where pull-down time matters more than tray count.
Power, drain and ventilation considerations
- Three-phase 415V: 10-tray and larger units typically need 415V/3-phase — confirm board capacity and breaker rating before delivery.
- Drain falls: Defrost cycles need a graded floor waste; pumped-drain units cost more but solve hard cases.
- Front-breathing condenser clearance: Allow 50mm at the rear and 600mm clear in front for service access; restricted airflow trips the high-temp alarm.
- Ambient temperature: AU summer kitchens hit 38°C+ — choose models rated to 43°C ambient if the room isn't air-conditioned.
Specifier checklist before order: confirm tray format (1/1 GN at 530×325mm or 2/1 GN at 650×530mm), trolley height clearance for roll-in units, refrigerant type (R290 hydrocarbon or R452A — affects servicing rules), HACCP probe count and length, and whether your existing oven trolleys interlock with the chiller's runner geometry. The blast chiller is rarely a standalone purchase — it pairs with a dedicated cool-room and an organised tray flow downstream.
Pair with
Build the chill chain with commercial blast chiller undercounter alternatives, GN trays from anti-jam pans stainless steel gastornorm pan and trolleys from gastronorm and bakery trolleys.