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How to Choose a Commercial Fridge for Your Kitchen: The Complete UK Guide (2026)
A commercial fridge is the one piece of kitchen equipment that runs 24 hours a day, 365 days a year, and quietly holds the food safety of your whole operation together — everything above 8°C on a chilled shelf is a potential enforcement notice. This guide covers the decisions that separate a correct spec from an expensive mistake: upright versus counter versus saladette versus walk-in by where the food sits, single versus double door by capacity and footprint, gross versus net litres (the number that catches out nearly every first-time buyer), GN-compatible interiors, ventilated versus static cooling, climate class and siting, and the £0.27/kWh energy maths that makes the cheapest fridge on the page the most expensive one you can own.
Key Facts: Commercial Fridges (UK, 2026)
- The 8°C rule: high-risk chilled food must be held at 8°C or below in England and Wales under the Food Safety (Temperature Control) Regulations 1995. Set the cabinet to 1–4°C so the warmest shelf still holds under 8°C, and verify with an independent probe — not the door display.
- Gross vs net litres: a “650-litre” fridge holds far less usable food — shelves, evaporator housing and airflow gaps eat 15–25%. Buy on net capacity and GN pan count, not the headline litre figure.
- Format follows the food: upright for bulk storage, counter/prep for the line, saladette for topping stations, walk-in above ~2,000 litres of demand. Get the format wrong and you either run out of space or waste floor.
- Ventilated vs static cooling: ventilated (fan-assisted) recovers temperature fast after door openings and holds even temperature top-to-bottom — the professional default. Static is quieter and gentler on unwrapped produce but slow to recover.
- Climate class decides siting: most commercial cabinets are climate class 4 (30°C, 55% RH) or class 5 (40°C). Site a class 3 cabinet in a hot kitchen and the compressor runs flat out while the interior drifts warm.
- GN-compatible interiors matter: a fridge sized to Gastronorm (the 530×325mm module) lets pans move straight from prep counter to fridge to oven. Non-GN interiors waste space and slow the line.
- Energy at £0.27/kWh: a 650L upright at ~4 kWh/day costs roughly £394/year to run; a 1,300L double door nearer £600/year. Over a 10-year life, running cost dwarfs purchase price — spec efficiency, not sticker price.
- Craven Cooling stock: Polar U-Series single door 650L (£1,099.88 + VAT), double door 1,300L (£1,829.51 + VAT), four-drawer GN counter fridge (£1,199.87 + VAT) and the U-Series Meat Ager (£1,799.81 + VAT) — all with 2-year parts warranty UK & Ireland.
Refrigeration is where most kitchen buyers overspend on the wrong thing and underspend on the right one. They pay a premium for a double-door upright when two counter fridges on the line would have served the same covers with half the walking, or they buy the cheapest 600-litre cabinet on the page and discover in August that it can’t hold 4°C in a 32°C kitchen. This guide fixes both mistakes: it starts with where the food actually needs to be cold, works through the four formats, then covers the specification details — net capacity, cooling type, climate class, door configuration — that decide whether the cabinet holds temperature for ten years or dies in three.
This guide is for the trade buyer specifying refrigeration for repeated commercial use — head chef, restaurant or gastropub operator, hotel kitchen manager, care home catering lead, butcher, deli owner, contract caterer or multi-site procurement buyer. Domestic and larder fridges are out of scope. Browse the full Craven Cooling commercial fridge range when ready.
Table of Contents
- Decision 1: Fridge Format by Where the Food Sits
- Decision 2: Single vs Double Door and Capacity
- Decision 3: Gross vs Net Litres and GN Interiors
- Decision 4: Cooling Type, Climate Class and Compliance
- Decision 5: Siting, Ventilation and Door Swing
- Decision 6: Energy and Running Costs
- Frequently Asked Questions
- Related Buying Guides
8°C
Maximum legal temperature for high-risk chilled food in England & Wales — set the cabinet to 1–4°C in practice
15–25%
Typical gap between gross (headline) and net (usable) litres — always buy on net capacity
£1,099.88
Polar U-Series single door upright fridge 650Ltr (+ VAT) — the workhorse storage cabinet
The cheap fridge is the expensive fridge over ten years
A commercial fridge runs continuously — it never gets a night off. The purchase price is a one-off; the electricity bill arrives every quarter for a decade. A poorly-insulated, tired-compressor budget cabinet can draw 6–8 kWh a day where an efficient one draws 3–4 — that’s £200–£400 a year of difference, £2,000–£4,000 over its life, on top of a shorter working life and higher failure risk. Add the cost of a single food-loss event when a struggling cabinet drifts over 8°C overnight, and the “saving” on the cheap fridge is long gone.
£2,000+
Typical 10-year running-cost gap between an efficient and an inefficient upright
Decision 1: Fridge Format by Where the Food Sits
The first decision is not brand or capacity — it is format, and format is dictated by where in the kitchen the food needs to be cold. Bulk stock, line service, topping stations and cold rooms each have a different answer. Buy the format to the job and the rest of the spec falls into place.
| Format | What it does | Best for | Typical price + VAT |
|---|---|---|---|
| Upright storage fridge | Full-height bulk cold storage, GN or shelf interior, single or double door | Back-of-house stock, deliveries, prepped mise held overnight | £900–£2,500 |
| Counter / prep fridge | Refrigerated cabinet at worktop height with a working surface on top | The cook line — chilled ingredients under the hands that use them | £1,000–£3,000 |
| Saladette | Prep counter with a chilled well of GN pans set into the top | Sandwich, salad, pizza and garnish stations — toppings to hand | £1,200–£3,500 |
| Walk-in cold room | Modular insulated room with a remote or integral cooling pack | High-volume sites needing 2,000+ litres — hotels, production kitchens | £3,500–£12,000+ installed |
The siting logic: cold storage wants to be near goods-in and the walk-in; the cook line wants counter fridges under the pass so the chef never turns away from the plate; the cold prep section wants a saladette so garnishes sit in reach. A kitchen that stores everything in one big upright at the back makes staff walk for every component — the hidden labour cost of the wrong format is paid every single service.
Upright Storage Fridge
The back-of-house workhorse- 650L single door / 1,300L double door typical
- GN2/1 or shelf interior
- Best for: bulk stock, deliveries, overnight mise
- Ventilated cooling, fast recovery
- 13A plug-in, self-contained
Counter / Prep Fridge
Refrigeration on the line- Doors or drawers under a work surface
- GN1/1 compatible interior
- Best for: the cook line and pass
- Drawers cut door-open heat gain
- Worktop doubles the footprint’s value
Saladette
Chilled topping station- GN pan well set into the counter top
- Refrigerated storage beneath
- Best for: salads, sandwiches, pizza, garnish
- Keep pans lidded when not in service
- Pan well needs its own airflow
Walk-In Cold Room
High-volume cold storage- Modular panels, integral or remote pack
- Racking-shelved for pallets and GN
- Best for: 2,000L+ of demand
- Needs floor space and drainage
- Installed, not plug-and-go
Most independent kitchens land on a combination: one or two upright storage fridges near goods-in, counter or drawer fridges on the cook line, and a saladette on the cold section — exactly the pairing the Polar U-Series uprights and the four-drawer GN counter fridge below are specified for. Larger operations add a walk-in and use the uprights as day fridges. Browse refrigerated prep counters and saladette fridges once the format is settled.
Decision 2: Single vs Double Door and Capacity Sizing
Once the format is chosen, capacity and door count are the next call. The temptation is always to buy bigger “to be safe” — but an over-sized cabinet run half-empty wastes energy cooling fresh air, and every door opening on a wide double-door cabinet dumps more cold air than a single door does.
| Factor | Single door (~650L) | Double door (~1,300L) |
|---|---|---|
| Usable capacity | ~500–550L net — one section’s stock | ~1,050–1,150L net — a full kitchen’s day fridge |
| Footprint | ✓ ~700mm wide — fits a tight run | ~1,350mm wide — needs a dedicated wall |
| Cold-air loss per opening | ✓ Open one side, lose one side | Independent doors help, but a wide single door dumps more air |
| Flexibility | ✓ Two singles can sit in two zones | One large box, one location, one failure point |
| Cost per usable litre | Higher per litre | ✓ Lower per litre at scale |
| Choose when… | Space is split, or you want redundancy across two cabinets | You need bulk cold storage in one place and have the wall for it |
The redundancy argument is the one most buyers miss. Two 650-litre single-door cabinets cost a little more per litre than one 1,300-litre double, but if a compressor fails you lose half your cold storage, not all of it — and you can stagger deliveries and defrosts across two boxes. For a single-site restaurant that lives or dies on its fridge, two singles is often the safer buy. For a hotel or production kitchen with a walk-in as backup, the double-door upright is the efficient day fridge.
Size for your peak delivery, not your average day
The classic sizing error is buying for a quiet Tuesday. Refrigeration has to swallow your biggest single delivery plus the mise already prepped plus a margin for airflow — pack a fridge solid and the fan can’t circulate cold air, so the middle of the load sits warm while the sensor by the evaporator reads a happy 3°C. Aim to run at 70–80% full at peak, never crammed. If your biggest delivery fills a 650-litre cabinet to the roof, you needed the 1,300, or a second cabinet.
Decision 3: Gross vs Net Litres and GN-Compatible Interiors
This is the section that stops you buying a fridge that looks big on paper and disappoints in the kitchen. The litre figure on the datasheet is almost always gross capacity — the total internal cavity volume. What you can actually store is net: gross minus the space taken by shelves, the evaporator housing, the airflow plenum and the gap you must leave for circulation.
Worked Example: Gross vs Net on a “650-Litre” Upright
Headline gross capacity650 L
Less evaporator housing and airflow plenum−70 L
Less shelf displacement and top/base gaps−50 L
Less circulation margin (never pack solid)−30 L
Realistic usable net capacity~500 L
The “650-litre” fridge holds roughly 500 litres of food in practice — plan on ~77% of the headline figure
A far more useful number than litres is GN pan count. Gastronorm is the universal modular standard — the 530×325mm base module (GN1/1) and its fractions and multiples — and a GN-compatible interior means pans slide straight from prep counter to fridge to oven without decanting. A cabinet quoted as taking “2 × GN2/1 columns” tells you exactly how much prepped food it holds and guarantees your existing pans fit. Non-GN interiors, or wire-shelf-only cabinets, force you to work around fixed shelf heights and waste the gaps.
Why GN compatibility pays back: a GN-runnered fridge lets the same pan of prepped chicken go from the saladette to the storage fridge to the combi oven without ever being tipped into another container — less handling, less cross-contamination risk, faster service, and no time lost hunting for a lid that fits. If your kitchen already runs Gastronorm (and almost every UK commercial kitchen does), a GN-compatible fridge interior is not a luxury, it’s the thing that makes the whole system work together. See our GN pan sizing and prep counter configuration guide for the full module maths.
When you compare cabinets, line up net capacity and GN count side by side, then look at shelf adjustability. Fully adjustable runners let you tune the interior to your product mix — tall stock pots one week, flat GN trays the next. Fixed shelves lock you in. The Polar U-Series uprights below run adjustable interiors sized for GN storage, which is why they suit both a bulk-stock role and a working day fridge.
Decision 4: Cooling Type, Climate Class and UK Compliance
This is the section that decides whether the cabinet holds temperature in a real, hot, busy kitchen — and whether it keeps you legal. Two specifications matter more than any brochure feature: the cooling method and the climate class.
| Factor | Ventilated (fan-assisted) | Static (gravity) |
|---|---|---|
| Temperature evenness | ✓ Even top-to-bottom — fan circulates cold air | Colder at the bottom, warmer at the top |
| Recovery after door opening | ✓ Fast — pulls back to set point quickly | Slow — relies on cold air settling |
| Best suited to | Busy kitchens, frequent access, wrapped/GN stock | Low-access, unwrapped produce, gentle chilling |
| Drying effect on unwrapped food | Slight — wrap or lid stock | ✓ Gentle — less dehydration |
| Noise | Fan noise present | ✓ Near-silent |
| Verdict | The professional default for a working kitchen | Specialist — meat ageing, unwrapped display, quiet areas |
For a general kitchen fridge, ventilated cooling wins — a busy line opens the door dozens of times an hour, and only fan-assisted circulation recovers set point fast enough to keep the warmest shelf under 8°C. Static cooling earns its place in specialist roles: gentle chilling of unwrapped produce, and controlled meat ageing, where a still, humid environment develops flavour without the drying a fan would cause. That is exactly the job the Polar U-Series Meat Ager below is built for.
The legal backdrop is straightforward but non-negotiable. The Food Safety (Temperature Control) Regulations 1995 require food likely to support the growth of pathogenic micro-organisms to be held at or below 8°C in England and Wales. Your food safety management system — required under retained Regulation (EC) 852/2004 and built on HACCP principles — must then evidence that you monitor and act on that limit. The Food Standards Agency and most Safer Food, Better Business packs work to 5°C in practice as a safety margin, which is why setting the cabinet to 1–4°C is standard trade practice.
1
Match climate class to your kitchen temperature
Cabinets are rated to a climate class — class 3 (25°C), class 4 (30°C, 55% RH) or class 5 (40°C). A commercial kitchen routinely hits 30°C+ near the line. Buy class 4 as a minimum; class 5 if the fridge sits beside ovens or in an unventilated space. Under-rate it and the compressor never rests.
2
Set to 1–4°C, verify with an independent probe
The door display shows air temperature at one sensor, usually near the evaporator — not the warmest shelf. Keep a calibrated probe in the warmest zone, log it morning and evening, and calibrate the probe monthly in iced water. That log is the first thing an EHO asks to see.
3
Know your defrost behaviour
Ventilated fridges defrost automatically; product temperature rises briefly and recovers — normal and allowed for. What is not normal is a cabinet that ices up because the door seal has failed or the drain is blocked. Ice on the evaporator kills efficiency and eventually holding temperature.
4
Store raw below cooked, always
Whatever the format, the cardinal rule holds: raw meat and poultry on the bottom shelves, ready-to-eat and cooked food above, so nothing can drip down onto food that won’t be cooked again. This is a HACCP fundamental and a routine EHO check point under Regulation (EC) 852/2004.
5
Respect F-Gas servicing on the refrigerant circuit
Commercial refrigeration uses fluorinated or HFC/HFO refrigerants covered by the F-Gas Regulation. Leak checks and servicing must be done by an F-Gas certified engineer, and records kept. Craven Cooling runs a servicing operation for exactly this — see the servicing page.
6
Keep the electrics compliant
Annual PAT testing, a visual plug-and-flex check on the cleaning rota, and a dedicated socket — never a daisy-chained extension lead. HSE guidance on maintaining portable electrical equipment applies directly to plug-in refrigeration.
Decision 5: Siting, Ventilation and Door Swing
Where the cabinet stands and how it breathes determines both whether it holds temperature and how long it lasts. These are the checks we walk customers through in the Swansea showroom before they commit.
-
Leave the ventilation clearances the manual specifies Self-contained cabinets reject heat through a condenser — typically requiring 50–150mm of clearance at the base, rear or top depending on where the grille sits. Box a fridge into tight joinery with no airflow and you will cook the condenser and lose the cabinet in year three instead of year ten.
-
Keep it away from heat sources A fridge sited beside an oven, range or dishwasher, or in direct sun through a window, fights a losing battle. The compressor runs continuously and the interior drifts warm. Allow a gap, or spec a higher climate class if the position is unavoidable.
-
Check the door swing against your traffic A full-height door needs clear swing space and must not open into a walkway or block a fire exit. In tight kitchens, drawer fridges or a saladette avoid the swing entirely — one reason the four-drawer counter fridge suits a packed line.
-
Level the cabinet and check the door seal closes square An out-of-level cabinet lets the self-closing door hang open a few millimetres — the classic cause of overnight temperature drift and an iced-up evaporator. Level it on delivery, then check the gasket pulls the door fully shut every time.
-
Plan the airflow inside as well as outside Never block the internal fan outlet or pack stock against the back wall where the cold air enters. Leave a finger’s gap around the load so air can circulate — the difference between an even 3°C throughout and a warm patch at 9°C.
-
Vacuum the condenser monthly A dust-furred condenser is the single most common cause of a fridge “running warm” and of premature compressor failure. A monthly vacuum of the condenser grille by your own staff, plus an annual professional service, keeps the cabinet at datasheet performance for its full design life.
UK Price Tiers — July 2026
Counter / Prep Fridge
£1,000–£3,000
Door or drawer counter, GN interior, worktop above — + VAT
Single Door Upright
£900–£1,600
~650L bulk storage, ventilated, GN-compatible — + VAT
Double Door Upright
£1,600–£2,800
~1,300L day fridge, lower cost per litre — + VAT
Specialist / Meat Ager
£1,500–£3,500
Controlled ageing, saladette, walk-in entry — + VAT
Commercial Fridges We Stock
Four Polar U-Series cabinets cover the large majority of independent kitchen refrigeration: single and double door uprights for storage, a four-drawer counter fridge for the line, and a dedicated meat ager for the specialist role. All stocked at Craven Cooling with a 2-year parts warranty across the UK & Ireland. Prices + VAT, July 2026.
Single Door Upright
Polar U-Series Single Door Upright Fridge 650Ltr UA050
£1,099.88
+ VAT — Craven Cooling trade price
The storage workhorse
- 650L gross upright storage fridge
- Ventilated cooling — even, fast recovery
- GN-compatible adjustable interior
- Self-closing single door, ~700mm wide
- Self-contained plug-in refrigeration
The default single-section storage cabinet: a fits-anywhere footprint, ventilated cooling that holds an even temperature through a busy service, and adjustable GN-compatible shelving.
View UA050 →
Double Door Upright
Polar U-Series Double Door Upright Fridge 1300Ltr UA052
£1,829.51
+ VAT — Craven Cooling trade price
Lowest cost per litre
- 1,300L gross double door storage fridge
- Independent doors cut cold-air loss
- Ventilated cooling, GN-compatible interior
- The efficient kitchen day fridge
- Self-contained plug-in refrigeration
Bulk cold storage in one box at the lowest cost per usable litre in the range — the standard hotel and production-kitchen day fridge where a single wall can take the ~1,350mm width.
View UA052 →
Drawer Counter Fridge
Polar U-Series Four Drawer Gastronorm Counter Fridge UA100
£1,199.87
+ VAT — Craven Cooling trade price
Refrigeration on the line
- Four Gastronorm drawers under a worktop
- Drawers cut door-open heat gain
- Chilled ingredients at the cook’s hands
- Working stainless top doubles the footprint
- Self-contained plug-in refrigeration
Puts GN-panned ingredients in reach on the cook line, with a prep surface on top. Drawers lose far less cold air than a door on a busy pass — the efficient choice where staff open refrigeration constantly.
View UA100 →
Meat Ager
Polar U-Series Meat Ager UA038
£1,799.81
+ VAT — Craven Cooling trade price
Specialist dry-ageing cabinet
- Controlled temperature and humidity ageing
- Gentle, still-air environment for flavour
- Best for: butchers, gastropubs, steak menus
- Glass door for display and provenance selling
- Self-contained plug-in refrigeration
A dedicated dry-ageing cabinet with controlled temperature and humidity — the specialist tool for butchers and steak-led kitchens developing flavour and provenance from aged beef.
View UA038 →
Need a saladette, prep counter, walk-in or a matching freezer?
Craven Cooling stocks or sources saladettes, refrigerated prep and pizza counters, blast chillers, and modular walk-in cold rooms to specification alongside the storage range. Call 01792 732702 or email sales@cravencooling.co.uk with your covers, kitchen layout and delivery volume — or compare cabinets side by side on live refrigeration in the Swansea showroom.
In this guide ↓
- Key facts and 2026 UK reference numbers
- Fridge formats — upright, counter, saladette, walk-in
- Single vs double door and capacity sizing
- Gross vs net litres and GN-compatible interiors
- Ventilated vs static cooling, climate class, the 8°C rule
- Stocked products at Craven Cooling — verified specs and prices
- Year-one total cost of ownership worked example
- FAQ — eight buyer-objection questions answered
Decision 6: Energy Cost & Year-One Running Budget
Commercial refrigeration runs 24 hours a day, 365 days a year — it is the one piece of kitchen equipment where the electricity bill genuinely rivals the purchase price over its life. Here is the realistic year-one picture for a 650-litre single-door upright.
Worked Example: 650L Upright Fridge, Year-One Cost
Polar U-Series 650L single door (UA050), + VAT£1,099.88
Delivery and positioning£80–£150
Typical daily consumption (class 4 ambient)~4 kWh/day
4 kWh × 365 days × £0.27/kWh (non-domestic average, 2026)~£394/yr
Condenser cleans + gasket check (planned maintenance)£80–£120/yr
A 1,300L double door for comparison (~6 kWh/day)~£591/yr energy
Year 1 total cost of ownership: ~£1,650–1,760 + VAT — with energy the dominant ongoing cost year after year
Two practical notes. Consumption is heavily dependent on siting and load: the same cabinet can run 20% under those numbers in a cool, well-ventilated position or 20–40% over if it sits beside an oven or is packed solid. Siting is an energy decision as much as a temperature one. And maintenance is not optional — a dust-furred condenser adds 10–20% to consumption and is the leading cause of premature compressor failure. A monthly condenser vacuum by your own staff plus an annual professional service — Craven Cooling runs a servicing operation for exactly this — keeps the cabinet at datasheet performance for its full design life.
The efficiency premium pays for itself
A better-insulated, better-compressored cabinet might cost £200–£400 more up front but draw a third less power. On a fridge that lives for a decade, that difference — £150–£300 a year — clears the price premium inside two years and keeps paying every year after. Buy the efficient cabinet and site it well: it is one of the quietest ongoing savings in the building.
All Refrigeration Formats We Stock or Source
| Model / format | Type | Capacity | Best for | Trade price + VAT |
|---|---|---|---|---|
| Polar U-Series 650L Single Door ★ | Upright storage | 650L gross | Section stock, day fridge | £1,099.88 |
| Polar U-Series 1300L Double Door ★ | Upright storage | 1,300L gross | Bulk cold storage | £1,829.51 |
| Polar U-Series 4-Drawer GN Counter ★ | Counter / prep fridge | 4 GN drawers | The cook line and pass | £1,199.87 |
| Polar U-Series Meat Ager ★ | Specialist ageing | Controlled temp/humidity | Butchers, steak menus | £1,799.81 |
| Saladette fridges | Chilled topping counter | GN pan well + storage | Salad, sandwich, pizza sections | Sourced to spec |
| Refrigerated prep counters | Counter fridge range | 2–3 door / drawer combos | The main cook line | Sourced to spec |
| Storage fridges & walk-ins | Bulk / walk-in | Up to 2,000L+ modular | High-volume production | Sourced to spec |
★ = Stocked at Craven Cooling. Other formats stocked or sourced to specification, 2–4 week lead time. Prices July 2026, + VAT.
See it live
Commercial upright fridges — in stock now
Browsing the whole range? See every option in this category → or call 01792 732702.
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In Summary
Choose a commercial fridge by format first: upright storage for bulk stock near goods-in, counter or drawer fridges on the cook line, a saladette for topping stations, and a walk-in above roughly 2,000 litres of demand. Then decide single versus double door — two 650-litre singles give redundancy and zoning; one 1,300-litre double gives the lowest cost per usable litre. Always buy on net (usable) capacity and GN pan count, not the headline gross litre figure, which is typically 15–25% larger than what you can store. Ventilated (fan-assisted) cooling is the professional default for a busy kitchen because it recovers temperature fast and holds it evenly; static cooling suits gentle chilling and meat ageing. Match the climate class to your kitchen — class 4 (30°C) minimum, class 5 beside ovens — and set the cabinet to 1–4°C so the warmest shelf stays under the 8°C legal limit set by the Food Safety (Temperature Control) Regulations 1995, verified with an independent probe and logged for EHO under retained Regulation (EC) 852/2004. Energy at £0.27/kWh runs roughly £394/year for a 650L single and ~£591/year for a 1,300L double, so efficiency and siting matter more than sticker price over a ten-year life. Craven Cooling stocks the Polar U-Series single door 650L (£1,099.88 + VAT), double door 1,300L (£1,829.51 + VAT), four-drawer GN counter fridge (£1,199.87 + VAT) and Meat Ager (£1,799.81 + VAT), and sources saladettes, prep counters and walk-ins to specification — call 01792 732702 or visit the Swansea showroom.
Frequently Asked Questions
What temperature should a commercial fridge be set to?
▼
Set the cabinet to between 1°C and 4°C. The legal maximum for high-risk chilled food in England and Wales is 8°C under the Food Safety (Temperature Control) Regulations 1995, but that is the temperature the food itself must never exceed — including the warmest shelf, during a busy service with the door opening constantly. Setting the cabinet to 1–4°C gives the headroom to keep even the warmest zone under 8°C. Verify with an independent calibrated probe placed in the warmest part of the cabinet, log it morning and evening, and never rely on the door display alone — it reads air temperature at one sensor, not product temperature across the load.
What’s the difference between gross and net litres, and which should I buy on?
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Gross litres is the total internal cavity — the headline figure on the datasheet. Net litres is what you can actually store once shelves, the evaporator housing, the airflow plenum and the circulation gap are subtracted, typically 15–25% less. A “650-litre” fridge holds roughly 500 litres of food in practice. Always compare cabinets on net capacity, and better still on GN pan count, which tells you exactly how much prepped food fits and guarantees your existing Gastronorm pans slide straight in. Buying on the gross figure is how kitchens end up short of space in month one.
Should I choose ventilated or static cooling?
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For a general working kitchen fridge, ventilated (fan-assisted) cooling is the right default. It circulates cold air so the temperature is even top-to-bottom and recovers quickly after the door is opened — essential on a busy line where refrigeration is accessed dozens of times an hour. Static (gravity) cooling is quieter and gentler on unwrapped produce because there is no drying airflow, but it is slow to recover and runs colder at the bottom than the top. Static earns its place in specialist roles — controlled meat ageing and gentle display of unwrapped items — which is exactly what a dedicated meat ager like the Polar U-Series UA038 provides.
Do I need a single-door or double-door upright?
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It depends on space, capacity and how much you value redundancy. A single-door ~650L cabinet (like the UA050) fits a tight run at around 700mm wide and loses less cold air per opening. A double-door ~1,300L cabinet (like the UA052) gives the lowest cost per usable litre and is the efficient bulk day fridge where you have a wall of about 1,350mm for it. The point many buyers miss: two 650L singles cost a little more per litre but if one compressor fails you keep half your cold storage rather than losing everything — for a single-site kitchen without a walk-in as backup, that redundancy is often worth the premium.
What climate class do I need for a hot commercial kitchen?
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Class 4 as a minimum, class 5 if the cabinet sits near heat. Climate class is the ambient temperature and humidity the fridge is rated to hold temperature in: class 3 is 25°C, class 4 is 30°C at 55% relative humidity, and class 5 is 40°C. A commercial kitchen routinely runs at 30°C or more near the line, so a class 3 cabinet bought on price will run its compressor flat out and still let the interior drift warm on a hot day. If the fridge has to sit beside ovens, a range or a dishwasher, or in an unventilated corner, specify class 5. Under-rating the climate class is one of the most common and most expensive fridge-buying mistakes.
How much does a commercial fridge cost to run per year?
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A 650-litre single-door upright at around 4 kWh per day costs roughly £394 a year in electricity at the 2026 non-domestic average of £0.27/kWh; a 1,300-litre double door at around 6 kWh per day comes nearer £591. Those figures swing 20–40% with siting and load — a cabinet next to an oven, packed solid, or with a furred-up condenser draws far more. Because the fridge runs continuously for a decade, running cost dwarfs the purchase price over its life, which is why an efficient, well-sited, well-maintained cabinet is the cheaper buy even at a higher ticket price. A monthly condenser vacuum and an annual service keep consumption at the datasheet figure.
Does a commercial fridge need to be GN (Gastronorm) compatible?
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For almost every UK commercial kitchen, yes — it makes the whole system work together. Gastronorm is the universal modular standard built on the 530×325mm base pan (GN1/1) and its fractions and multiples, used across fridges, prep counters, bain maries, combi ovens and blast chillers. A GN-compatible fridge interior means a pan of prepped food moves straight from the saladette to the storage fridge to the oven without ever being tipped into another container — less handling, less cross-contamination risk and faster service. Non-GN or wire-shelf-only interiors force you to work around fixed shelf heights and waste the gaps. If your kitchen already runs Gastronorm, buy a GN-compatible fridge.
How much clearance does a commercial fridge need around it?
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Follow the manufacturer’s manual, but plan on 50–150mm of clearance at the base, rear or top depending on where the condenser grille sits, plus clear door-swing space that does not block a walkway or fire exit. Self-contained cabinets reject heat through the condenser, and boxing one into tight joinery with no airflow starves the condenser of cool air — it overheats, works harder, and fails years early. Keep the fridge out of direct sun and away from ovens and heaters, level it so the door seals square, and vacuum the condenser grille monthly. Getting the clearances and siting right is the difference between a cabinet that lasts ten years and one that dies in three.
