How to choose an ice machine
Quick answer. For most operators, go for an air-cooled Hoshizaki cube machine sized to your busiest day's output with a bin that covers your peak surge: a self-contained under-counter unit for smaller bars and cafes, or a modular head plus generous storage bin for high-volume sites. Add a water filter in hard-water areas and confirm your electrics before you order. If back-of-house runs hot and cramped, step up to water-cooled to protect production.
The wrong ice machine either runs dry at 7pm on a Friday or sits half-idle burning money, so the choice is really about matching daily output and ice type to how your site actually trades. Start with two numbers: how many kilos of ice you go through on your busiest day, and how much bin storage you need to ride out the peak without the machine catching up. Get those right and the rest (cooling method, ice shape, electrics) falls into place quickly.
The questions to ask before you buy
How much ice do I actually use per day?
Rule of thumb: bars run roughly 1.5–2kg per cover on a hot service, casual restaurants around 0.5–1kg, and fine dining or coffee-led sites less. Add 20% headroom for summer and growth. A 200-cover gastropub in July can easily need 90–150kg/day, so size on your worst case, not your average.
Air-cooled or water-cooled?
Air-cooled is cheaper to run and the default choice, but it needs decent ventilation and struggles in hot back-of-house rooms (over ~30°C output drops sharply). Water-cooled holds output in hot, tight, poorly ventilated spaces but uses mains water and usually needs WRAS-compliant plumbing, so running costs and metering matter. Pick air-cooled unless the room genuinely runs hot.
What ambient and water conditions will it live in?
Manufacturer output figures are quoted at ideal conditions (often 21°C air / 15°C water). A cellar at 32°C with warm incoming mains water can cut real-world production by 20–30%. Tell your supplier the actual room temperature and, in hard-water areas, factor in a scale filter to protect the machine and keep ice clear.
Do I need a separate storage bin?
Modular head units make ice but hold almost none, so they pair with a bin sized to your peak demand. Self-contained under-counter units store a modest amount built in. If you draw ice in big bursts (busy bar rounds), a bigger bin matters more than raw production rate, because the bin covers the surge while the machine refills.
What are my electrics and space?
Small under-counter units run on a standard 13A plug; larger modular and flaker heads may need dedicated or hardwired supply, and the biggest production heads can be three-phase. Confirm the spur, the door/lift-in access route, and clearances for airflow before ordering, not on delivery day.
Which ice shape suits my service?
Cube for spirits and long drinks (slow-melt, clear, premium look), gourmet/top-hat for high-end cocktail and bottle presentation, nugget/pearl for soft drinks, smoothies and healthcare (chewable, fast-chilling), and flake for fish displays, buffets and food prep. Match the shape to the pour, not just the price.
The main types, and who each suits
Cube ice machine (self-contained, under-counter)
Small bars, cafes and restaurants with under-bar space; one plug, one unit, moderate output (typically 20–60kg/day).
Modular cube head + storage bin
High-volume bars, hotels and busy kitchens needing 100kg+/day; stack the production head you need onto the bin size your peak demands.
Gourmet / top-hat ice machine
Cocktail bars and premium venues where slow-melting, crystal-clear ice is part of the drink presentation.
Nugget / pearl ice machine
Soft-drink-led sites, QSR, smoothie bars, care homes and hospitals; soft chewable ice that chills fast and is kind on teeth.
Flake ice machine
Fishmongers, seafood and deli counters, buffet displays and food prep; mouldable ice for packing and presentation rather than drinks.
What to look for
- Real-world output at YOUR ambient, not just the headline figure quoted at 21°C air / 15°C water.
- Bin capacity that covers your peak surge, not just 24-hour production; a big bin beats a fast head for burst demand.
- Air-cooled clearances and ventilation, or WRAS-compliant plumbing and drainage if water-cooled.
- Correct electrical supply confirmed up front: 13A plug, dedicated spur, hardwired or three-phase.
- A built-in or fitted water filter in hard-water areas to prevent scale, protect the machine and keep ice clear.
- Hygiene and cleaning design: antimicrobial surfaces, easy-access panels and a sensible descale/clean cycle.
- Energy efficiency and refrigerant (F-gas compliant) for lower running costs over the unit's life.
- Access route and footprint: lift-in clearances, door widths and whether the bin/head splits for delivery.
Costly mistakes to avoid
- Sizing on average daily covers instead of your busiest summer service, then running dry mid-shift.
- Choosing air-cooled for a hot, unventilated cellar or back-kitchen, so output quietly collapses when you need it most.
- Forgetting bin storage: buying a fast production head with a tiny bin that can't cover a busy bar surge.
- Skipping a scale filter in a hard-water area, leading to cloudy ice, poor output and early breakdowns.