Choose a commercial ice machine by working out three things in order: how many kilograms of ice you use on your busiest day, which ice shape suits what you serve, and how much space and cooling the machine has to work with. Get those three right and the format almost picks itself — countertop for low volume, under-bench for a bar, and a modular head on a storage bin for a high-volume kitchen.
📋 What this guide covers
- Working out how much ice you actually need per day
- The four machine formats and what each suits
- Ice shapes, and why the shape changes your drink cost
- Air-cooled versus water-cooled condensers
- Water quality, filtration and the Australian summer problem
- Installation, servicing and running costs
1. Work out your real daily ice demand
Every ice machine is rated in kilograms of ice produced per 24 hours. That single number decides almost everything else, so start there rather than with a model.
Do not use an average day. Count your busiest day. Add up the drinks you pour, the ice you use in display and food holding, and any ice that goes out with takeaway orders. Then add headroom, because a machine that only just meets peak demand will run flat out and fail sooner than one with room to spare.
One thing catches people out constantly: a manufacturer's rated output is measured under stated test conditions, typically a cool ambient air temperature and a cool incoming water temperature. Put the same machine in a hot Australian kitchen in February and real output drops, sometimes sharply. Always read the output figure alongside the test conditions on the spec sheet, and size up if your kitchen runs hot.
ℹ️ Output and storage are two different numbers
A machine's 24-hour production figure is not the same as its bin capacity. A unit can make plenty of ice over a day and still run dry during a two-hour rush if the bin is too small. Match both to your service pattern, not just the daily total.
2. The four main formats
Commercial ice machines come in four broad formats. The right one depends on your volume and the space you have.
| Format | Best for | Why |
|---|---|---|
| Countertop | Cafes, small offices, low volume | Sits on a bench, needs little space, often includes a small integrated bin. |
| Under-bench | Bars, cafes, small restaurants | Fits under a standard bench and puts ice where staff need it, at the point of service. |
| Self-contained | Mid-size venues | Ice maker and storage bin in one cabinet. Simple to install, one footprint. |
| Modular head plus bin | High-volume kitchens, hotels, clubs | The ice maker head sits on a separate storage bin, so you scale production and storage independently. |
- Countertop machines: The simplest option for a low-volume site. Browse countertop ice machines.
- Under-bench machines: Purpose-built to slot into a bar or service area. See under bench ice machines.
- Modular machines: Built for volume and for scaling later. Explore modular ice machines.
- Ice maker heads: The production unit that pairs with a separate bin. View ice maker heads.
3. Choose the ice shape before the machine
Ice shape is not cosmetic. It changes how fast a drink dilutes, how much of the glass the ice fills, and therefore how much product you pour.
| Ice type | Melts | Best for |
|---|---|---|
| Full cube / dice | Slowly | Spirits, mixed drinks and anything served over ice. The all-round bar choice. |
| Half dice | Moderately | Soft drink dispensers and fountain service. Packs a glass more densely. |
| Gourmet / top hat | Slowly | Premium cocktail and whisky service where clarity and appearance matter. |
| Flake | Quickly | Seafood and salad display, food preservation, and moulding around produce. |
| Nugget / chewable | Quickly | Smoothies, soft drinks and venues where customers chew the ice. |
🔧 Pro tip, the shape decides your pour cost
Fast-melting flake or nugget ice waters a drink down quicker, so staff top up more often and product goes out the door. If you serve spirits over ice, a slow-melting full cube is usually the cheaper ice in the long run, even though the machine costs the same to run.
4. Air-cooled or water-cooled
Every ice machine has to dump the heat it removes from the water. How it does that is one of the biggest running-cost decisions you will make.
Air-cooled machines blow that heat into the room. They are the most common choice, cost less to install and use no extra water. The catch is that they need genuine clearance around the vents and a room that is not already hot. An air-cooled machine crammed into a tight cupboard next to a fryer will underperform and fail early.
Water-cooled machines send the heat out through a water circuit instead. They hold output better in hot rooms and run quieter, but they use extra water and need proper plumbing. In parts of Australia where water costs are high, do the sums before committing.
Remote condenser systems put the hot component outside the building entirely. They cost more to install and are the right answer for a hot, enclosed kitchen or where noise matters.
5. Water quality is not optional
Ice machines are effectively water treatment plants. Whatever is in your supply ends up in the ice, and the minerals stay behind in the machine.
Hard water leaves scale on the evaporator, which slows production, raises energy use and eventually kills the machine. Cloudy ice, ice that tastes off and ice that sticks together in the bin are all usually water problems, not machine faults.
Fit a filter designed for ice machines, and set a reminder to change the cartridge on the manufacturer's schedule rather than when someone notices a problem. Browse water filters and ice machine accessories.
ℹ️ Ice is a food
Under Australian food safety rules, ice used in drinks or in contact with food is treated as a food. That means the machine, the bin and the scoop all need a documented cleaning routine, and the scoop must never live inside the bin between uses.
6. Space, ventilation and installation
Before you order, measure three things: the machine footprint, the clearance the manufacturer requires on each side, and the doorway it has to come through. Ice machines are heavy, and clearance requirements are not suggestions — they are what the airflow calculations depend on.
You will also need a cold water supply, a drain, and power. Drainage matters more than people expect: the bin drains as ice melts, so the drain has to be able to take it, and it should be a properly installed waste rather than a hose in a floor gully.
7. Servicing and running costs
An ice machine runs almost continuously, so the purchase price is only part of the cost. Look at the energy consumption per kilogram of ice, the water consumption per kilogram, and the cost and availability of parts and filters.
Build a cleaning and descaling routine into your roster. Most premature ice machine failures come down to a scaled evaporator or a blocked condenser filter, and both are preventable in fifteen minutes a month. See the full range of commercial ice machines to compare formats and outputs.
Final thoughts
Ice is one of those things nobody notices until it runs out mid-service. Size the machine to your busiest day rather than your average one, choose the ice shape that suits what you actually pour, and give the machine the clearance, water quality and cleaning it needs. Do that and it will quietly do its job for years.
Frequently Asked Questions
Size it on your busiest day, not your average. Add up the ice used in drinks, food display and takeaway on your peak day, then add headroom. Also check the manufacturer's rated output against its stated test conditions, because output falls in a hot kitchen.
An under-bench machine is one cabinet that makes and stores ice, sized to fit beneath a standard bench at the point of service. A modular machine is an ice maker head that sits on a separate storage bin, so you can scale production and storage independently for high-volume sites.
Full cube or dice ice suits most bars because it melts slowly, so drinks dilute less and staff top up less often. Gourmet or top hat ice suits premium spirit and cocktail service. Flake and nugget ice melt quickly and are better for food display than for drinks.
Cloudy ice, off-tasting ice and ice that clumps in the bin are usually water quality problems rather than machine faults. Fit a filter designed for ice machines, replace the cartridge on schedule, and keep the descaling routine up to date.
Air-cooled is the usual choice: cheaper to install and it uses no extra water, provided the machine gets the clearance the manufacturer specifies and the room is not already hot. Water-cooled holds output better in hot rooms and runs quieter but uses more water. A remote condenser suits hot, enclosed kitchens.
