How to Choose a Commercial Ice Machine for Your Business: The Complete UK Guide (2026)
An ice machine is the piece of catering equipment buyers under-size more often than any other — and the one that fails first on hard water and a hot day. Ice is a food product under UK food hygiene law, so it is not just a bar convenience: it has to be made, stored and handled to the same standard as anything else you serve. This guide covers the decisions that matter: cube versus gourmet versus flake versus nugget ice by what you actually serve, air-cooled versus water-cooled by your kitchen environment, the kg/24hr output sizing maths (allow roughly 0.5–1kg of ice per cover per day depending on venue), separate bin storage, water filtration and limescale, drainage, and the ambient-temperature derating that quietly halves the output printed on the box.
- Ice is a food: under retained Regulation (EC) 852/2004 ice made for consumption is a food product — it must be produced from a potable supply, stored hygienically and handled with a dedicated scoop, never a glass.
- Size on output, not sticker: allow roughly 0.5–1kg of ice per cover per day — nearer 0.5kg for a food-led restaurant, 1kg+ for a cocktail bar or in summer. Under-size and you run dry at 9pm on a Friday.
- Output is derated by ambient: the “25kg/24hr” on the box is measured at a cool 10°C water and 21°C air. In a 32°C kitchen the same machine may make 30–40% less — always size against your worst-case summer conditions.
- Ice type follows the drink: cube for general bar and soft drinks, gourmet/gem for premium spirits and cocktails, flake for fish/seafood display and food presentation, nugget/pearl for cold drinks and healthcare.
- Air- vs water-cooled: air-cooled is cheaper to run and standard; water-cooled suits hot, unventilated rooms but uses (and is charged for) mains water for condensing — check your local water authority’s stance first.
- Storage bin sizing is separate: production and storage are two numbers. A machine making 50kg/24hr on a 20kg bin runs out at peak — match bin capacity to your peak-hour draw, not the daily total.
- Limescale is the number-one killer: untreated hard water scales the evaporator plate and voids most warranties. A scheduled filter cartridge protects the machine and the ice quality.
- Ranges stocked to spec: Craven Cooling stocks or sources Polar, Hoshizaki and other leading ice machine ranges — cube, gourmet, flake and nugget — sized to your covers, with a 2-year parts warranty UK & Ireland.
Most ice machine mistakes are made on the day of purchase and paid for every summer afterwards. Buyers read the headline kg/24hr figure, divide by nothing in particular, and buy a machine that looks big enough — then discover in July that the “25kg a day” machine makes 16kg in their hot kitchen and empties its little bin by mid-service. Others buy the right output but the wrong ice type, put nugget ice in a spirits bar or cube ice under a fish counter, and the ice does the wrong job. This guide fixes both: it starts with the ice type your drinks and food actually need, sizes the output against realistic ambient conditions, then covers the storage, water, drainage and siting decisions that decide whether the machine keeps up and keeps clean.
This guide is for the trade buyer specifying ice for repeated commercial use — pub, bar and cocktail-bar operators, hotel F&B managers, restaurants, fishmongers and fresh counters, care homes, event caterers and contract catering. Domestic ice-makers are out of scope. Browse the full Craven Cooling ice machine range when ready.
Table of Contents
- Decision 1: Ice Type by What You Serve
- Decision 2: Sizing Output by Covers and Ambient
- Decision 3: Air-Cooled vs Water-Cooled
- Decision 4: Storage, Bins and Machine Format
- Decision 5: Water, Limescale, Drainage and Hygiene
- Decision 6: Running Costs and Maintenance
- Frequently Asked Questions
- Related Buying Guides
Decision 1: Ice Type by What You Serve
The first decision is not brand or size — it is ice type, because the shape and density of the ice decide how it performs in the glass or on the counter. Get the type wrong and even a perfectly-sized machine makes ice that does the wrong job.
| Ice type | Character | Best for | Watch out for |
|---|---|---|---|
| Cube (full/half) | Hard, slow-melting, clear, high yield | General bar, soft drinks, spirits and mixers, high volume | The default all-rounder — but not premium enough for a cocktail programme |
| Gourmet / gem | Dense, crystal-clear, slow-melt, premium look | Premium spirits, cocktails, hotel bars, whisky service | Lower yield per kWh; a premium format for a premium bar |
| Flake | Soft, mouldable, high surface area, fast-chilling | Fish and seafood display, salad bars, food presentation, blast-chilling | Melts fast — not for drinks; needs its own bin drainage |
| Nugget / pearl | Soft, chewable, absorbs flavour, packs well | Cold drinks, smoothies, healthcare and care settings, self-serve | Chews easily — loved by customers, but softer and faster-melting than cube |
Cube Ice
The volume all-rounder- Hard, clear, slow-melting
- Best yield per kWh of any type
- Best for: bars, soft drinks, high volume
- Full or half cube by drink style
- The safe default for most venues
Gourmet / Gem
The premium drinks format- Dense, crystal-clear, slow-melt
- Premium presentation in the glass
- Best for: cocktails, whisky, hotel bars
- Lower output per machine size
- Where the ice is part of the serve
Flake Ice
Display and food chilling- Soft, mouldable, fast-chilling
- Packs around product
- Best for: fish counters, seafood, salad bars
- Melts quickly — not for drinks
- Needs bin drainage for meltwater
Nugget / Pearl
Soft, chewable ice- Soft, absorbs drink flavour
- Packs densely, low splash
- Best for: cold drinks, smoothies, healthcare
- Customer favourite for chewing
- Softer and faster-melting than cube
Most venues need one type well-sized rather than several formats half-sized. A gastropub or restaurant is cube; a cocktail bar is gourmet plus a cube back-up; a fishmonger or seafood restaurant is flake; a care home or self-serve drinks station is nugget. If you genuinely serve two roles — a bar and a fresh fish counter, say — spec two machines, because no single ice type does both well. Browse ice cube machines as the starting point for most drinks operations, and ask us to spec flake or nugget where the application calls for it.
Decision 2: Sizing Output by Covers and Ambient
This is the decision that gets under-done more than any other. Output is quoted as kilograms of ice produced per 24 hours — but that figure is a best-case lab measurement, and your real requirement depends on covers, venue type, and the temperature of your kitchen.
The working rule of thumb is roughly 0.5–1kg of ice per cover per day. Use the lower end for a food-led restaurant where ice mostly goes in soft drinks and water; the higher end for a bar, a cocktail-led venue, or anywhere that serves a lot of iced drinks. A hotel adds function and banqueting demand on top. Then apply headroom for peaks and summer — an ice machine that exactly matches your average daily need will always fail on your busiest, hottest day.
That derating step is the one most buyers skip. Ice machines are rated at benchmark conditions — typically around 10°C incoming water and 21°C ambient air. Every degree warmer than that, and the condenser works harder and produces less. In a busy kitchen or behind a hot bar at 30–35°C, a machine can lose 30–40% of its rated output. Size against your worst-case conditions, not the brochure’s best-case, and you never run dry. It is always cheaper to buy one size up than to buy again in August.
| Venue | Ice per cover/day | Typical daily need | Rated output to buy (derated) |
|---|---|---|---|
| Café / food-led restaurant | ~0.5 kg | 40–60 kg | ~60–90 kg/24hr |
| Gastropub / bar-restaurant | ~0.75 kg | 90–120 kg | ~130–170 kg/24hr |
| Cocktail / high-volume bar | ~1 kg+ | 150–250 kg | ~220–360 kg/24hr |
| Hotel (rooms + bar + functions) | Variable | 200 kg+ | ~280 kg/24hr + storage |
Decision 3: Air-Cooled vs Water-Cooled Condensing
Every ice machine has to reject the heat it removes from the water it freezes. It does that through a condenser, and the condenser is either air-cooled or water-cooled. The choice is dictated almost entirely by where the machine has to live.
| Factor | Air-cooled | Water-cooled |
|---|---|---|
| Running cost | ✓ Lower — no mains water used for condensing | Higher — uses (and is metered on) mains water to reject heat |
| Performance in hot rooms | Derates as room temperature rises; needs clear airflow | ✓ Holds output in hot, unventilated spaces |
| Ventilation demand | Needs air clearance around the condenser and a cool intake | ✓ Rejects heat to water, not the room |
| Heat put into the room | Warms the surrounding space | ✓ Adds little heat to the room |
| Water authority position | ✓ No condensing-water discharge to consider | Some UK water authorities restrict once-through cooling — check first |
| Choose when… | Standard installs with reasonable ventilation — most sites | Hot, cramped, unventilated plant rooms where air-cooled would choke |
For the large majority of installations, air-cooled is the right and cheaper choice — it uses no water for condensing and runs at lower operating cost. Water-cooled earns its place only where the machine must sit in a hot, unventilated space that would starve an air-cooled condenser and cripple its output. Before you spec water-cooled, check your local water authority’s position: some restrict once-through condensing-water use, and the water cost can be significant. A well-ventilated position for an air-cooled machine is almost always the better answer.
Decision 4: Storage, Bins and Machine Format
Where the ice is made and where it is stored are separate questions, and the format you choose depends on your volume and your space.
Integral (Self-Contained)
Machine + bin in one- Production head and store in one cabinet
- Under-counter or freestanding
- Best for: cafés, small bars, low volume
- Simple install, single footprint
- Bin size limits peak draw
Modular Head + Bin
High-volume separates- Production head sits on a large bin
- Scale bin to peak draw
- Best for: busy bars, hotels, functions
- Bigger daily output and storage
- Needs floor space and headroom
Under-Counter
Behind the bar- Fits under a 900mm bar counter
- Ice at the point of pour
- Best for: bar service, tight sites
- Limited storage — restock at peak
- Watch condenser ventilation at the front
Ice Dispenser
Self-serve / healthcare- Hands-free dispensing, hygienic
- Nugget or cube, drinks-station format
- Best for: self-serve, care, canteens
- No scoop contamination risk
- Combined ice + water options
Match the format to volume and space. A café or a small bar is well served by a self-contained under-counter machine. A busy gastropub or hotel bar wants a modular head on a bin sized to the peak-hour draw. A self-serve drinks station, canteen or care setting benefits from a hands-free dispenser that removes the scoop-and-glass contamination risk entirely. For storage bins, remember the rule from Decision 2: size the bin to what you draw down in your busiest two hours, not to the daily production figure. Browse ice machine bins and accessories to match storage to your production head.
Decision 5: Water, Limescale, Drainage and Hygiene
Water is the whole product, and it is also the whole problem. The mineral content of your supply decides ice clarity, machine reliability and whether your warranty survives — and ice, as a food, has to be produced and handled to the food hygiene standard.
Ice is made for consumption, so under retained Regulation (EC) 852/2004 it is a food product. That means it must be produced from a potable (drinking-quality) water supply, the machine and bin must be kept clean and free of biofilm, and ice must be handled with a dedicated ice scoop stored outside the bin — never scooped with a glass (a chipped glass in the bin is a contamination and a physical-hazard incident) and never handled by hand. The Food Standards Agency treats ice hygiene as a routine inspection point; a dirty ice machine is a common cause of a marked-down food hygiene rating.
Get your water hardness in ppm from your water company before ordering. Above roughly 100ppm you want a scale-inhibiting filter; in hard areas, a cartridge sized to your daily litres and changed on schedule. This is the single cheapest way to protect the machine and the ice.
Ice machines drain meltwater from the bin and purge water from the freezing cycle. You need a gravity fall to a drain (or a condensate pump where you can’t achieve fall). Blocked or uphill drains cause bin flooding, overflow and hygiene problems. Get the plumber to confirm the fall before delivery.
Reg 852/2004 hygiene basics: a dedicated scoop kept in a holder outside the bin, never a glass and never bare hands. A chipped or glass-scooped bin is both a contamination risk and a physical hazard. Train every staff member on the scoop rule.
Ice machines grow biofilm and mould in the bin and water paths if left. Run the manufacturer’s clean-and-sanitise cycle on schedule (typically every few months, more in warm sites), and keep records. Put it on the written cleaning schedule alongside the rest of the kitchen.
An air-cooled machine derates in a hot room and chokes without airflow. Site it away from cookers and direct sun, leave the specified clearances, and don’t box it into a sealed cupboard. If the only spot is a hot plant room, that is when water-cooled earns its keep.
Like all commercial refrigeration, an ice machine’s sealed system is covered by the F-Gas Regulation — leak checks and repairs must be done by a certified engineer with records kept. Craven Cooling runs a servicing operation for this — see the servicing page.
UK Price Tiers — July 2026
Market guide ranges for planning. Exact model and price confirmed on quotation to your covers, ice type and site conditions.
Ice Machine Ranges We Stock or Source
Craven Cooling stocks or sources ice machines to specification across every format and ice type — Polar, Hoshizaki and other leading ranges — sized to your covers, ice type and real-world kitchen conditions. Rather than quote a single model, we spec the right machine and storage for your site. Prices confirmed on quotation, + VAT.
| Format | Ice type | Best for | Availability |
|---|---|---|---|
| Cube ice machines | Full / half cube | General bar, soft drinks, high volume | Stocked / sourced to spec |
| Gourmet / gem machines | Dense clear ice | Cocktails, premium spirits, hotel bars | Sourced to spec |
| Flake ice machines | Soft flake | Fish counters, seafood display, food chilling | Sourced to spec |
| Nugget / dispenser machines | Nugget / pearl | Cold drinks, self-serve, healthcare | Sourced to spec |
| Storage bins & accessories | — | Matching peak-draw storage to a modular head | Stocked / sourced to spec |
In this guide ↓
- Key facts and 2026 UK reference numbers
- Ice types — cube, gourmet, flake, nugget
- Sizing output by covers and ambient derating
- Air-cooled vs water-cooled condensing
- Storage, bins and machine format
- Water, limescale, drainage and ice hygiene under Reg 852/2004
- Running costs and maintenance
- FAQ — eight buyer-objection questions answered
Decision 6: Running Costs and Maintenance
An ice machine runs whenever it is below its bin fill level — which, in a busy venue, is most of the day. Water, electricity and filtration are the ongoing costs, and maintenance is what keeps them from spiralling.
Two practical notes. First, running cost swings hard with siting: an air-cooled machine in a hot, poorly-ventilated position works harder, makes less ice and costs more per kilogram — so a cool, well-ventilated position is a running-cost decision, not just a performance one. Second, filtration is not optional in hard-water areas: a £150–£300 a year cartridge protects a several-thousand-pound machine and keeps the warranty valid, while an untreated machine scales up, drops output and eventually fails. Book a monthly condenser clean and a periodic professional clean-and-sanitise — Craven Cooling runs a servicing operation for exactly this.
Choose a commercial ice machine by ice type first: cube for general bar and soft drinks, gourmet/gem for cocktails and premium spirits, flake for fish and seafood display, nugget for cold drinks, self-serve and healthcare. Then size the output — allow roughly 0.5–1kg of ice per cover per day, higher for bars and summer — and crucially derate the rated figure for your kitchen's ambient temperature, because a machine rated in a cool lab can lose 30–40% of its output in a 30–35°C kitchen. Buy against your worst-case summer conditions with headroom, and remember production and storage are two different numbers: size the bin to your peak-hour draw, not the daily total. Air-cooled condensing is cheaper to run and standard for most sites; water-cooled suits hot, unventilated spaces but uses metered mains water, so check your water authority first. Ice is a food product under retained Regulation (EC) 852/2004: make it from potable water, keep the machine and bin clean and free of biofilm, and handle it with a dedicated scoop, never a glass. Untreated hard water scales the evaporator plate and voids most warranties, so fit filtration matched to your hardness, plan proper gravity drainage, and keep the F-Gas refrigerant circuit serviced. Craven Cooling stocks or sources Polar, Hoshizaki and other leading ice machine ranges to specification — call 01792 732702 with your covers, ice type and kitchen temperature, or visit the Swansea showroom.
