Hospitality groups are strange to work with, in a good way. Everything front of house is standardised to within an inch of its life. Same menu, same glassware, same tone of voice on the specials board. Then you walk into the kitchen at six different sites and find six different undercounter fridges, three brands of blast chiller, and a cellar cooling system that was installed by whoever the pub company used in 2009.
It happens because sites are acquired rather than built, and each one comes with a kitchen already in it. Perfectly understandable. It also means the estate carries a maintenance burden that a standardised one would not, and the difference shows up in callout volume rather than on any single invoice.
Why hospitality refrigeration fails more than it should
Commercial kitchens are genuinely hostile to refrigeration. That is not an excuse, it is a design constraint that gets ignored.
- Ambient heat. An undercounter fridge next to a range is being asked to reject heat into air that is already thirty-plus degrees. It will run almost continuously and it will not last as long as the same unit in a cool prep area.
- Grease. Airborne grease settles on condenser fins and forms a layer that dust then sticks to. A greasy condenser is far worse than a dusty one and needs a proper clean, not a brush.
- Door traffic. A prep fridge in service gets opened constantly. Every opening is a warm humid air exchange, which loads the evaporator and drives icing.
- Nobody owns it. Kitchens are busy. A fridge running two degrees warm gets noticed only when something is visibly wrong, by which point it has been inefficient for months.
- Cleaning gets skipped. Under a counter, behind a grill, at the back of a cellar. If it is awkward to reach, it does not get done.
The single highest-value thing a group can do is make condenser access a specification requirement rather than an afterthought. If an engineer or a KP cannot get to the condenser in two minutes, it will not be cleaned, and everything downstream of that follows.
The cellar, which is its own discipline
Pub groups have a refrigeration asset that most restaurant groups do not, and it directly determines product quality rather than just safety.
Cellar cooling has a tighter target than most people assume. Cask Marque notes that the recommended dispense temperature of the majority of brewers is between 11 and 13°C, and audits to a range of 10 to 14°C to allow some leeway. Their research also found that while 97% of drinkers were happy at the industry standard of 11 to 13°C, satisfaction dropped to 52% once the temperature exceeded 14°C.
That is an unusually direct link between a piece of plant and what a customer thinks of the product. A cellar running at 16°C is not a maintenance issue that can wait. It is affecting every pint served.
What actually goes wrong in cellars:
| Problem | Effect | Usual cause |
|---|---|---|
| Cellar runs warm in summer | Beer quality drops, cask goes off faster | Undersized for the heat gain, or a fouled condenser |
| Cellar too cold or freezing | Cask damaged, chill haze, product loss | Controller fault or a poorly located sensor |
| Cellar door propped open | Constant heat gain, system runs flat out | Delivery routine, not the equipment |
| Condensation and damp | Hygiene issues, corrosion | Humidity not being managed, poor sealing |
| Python and line cooling failing | Warm first pull, wasted product | Separate system, frequently forgotten in the contract |
That last row is worth checking on your own contract right now. Cellar cooling and line cooling are often two different systems, and it is common for one to be covered and the other not. We cover cellar cooling installation and repair in more depth, but the estate-level point is simple: make sure the contract names both.
Standardising the kitchen spec
You will never fully standardise an acquired estate, and you can standardise what you buy from now on. That is enough to change the economics within a few years.
| Item | What to fix centrally |
|---|---|
| Undercounter and upright fridges | One or two models, remote condenser where the kitchen runs hot |
| Blast chiller | One model, sized on actual production volume rather than a catalogue guess |
| Walk-in cold room | Standard panel spec, standard controller, standard door and safety fit-out |
| Ice machine | One model, and a written water filtration and cleaning regime |
| Controllers | One brand across the estate. This alone speeds diagnosis noticeably |
| Monitoring | One platform, alarms routed to a person who can act out of hours |
The two that repay the effort most are controllers and ice machines. Controllers because an engineer who knows the interface diagnoses faster and a manager can read a fault code over the phone. Ice machines because they are the most neglected asset in hospitality, they have a hygiene dimension that other refrigeration does not, and they fail in summer when you need them most. Our guide to commercial ice machine servicing covers what that regime should look like.
Where blast chilling fits
If your kitchens do any batch production, the blast chiller is a food safety control point rather than a convenience. It exists to move cooked product through the temperature range where bacteria multiply fastest, quickly enough that they do not.
Two things groups get wrong. First, sizing it on the catalogue capacity rather than on what the kitchen actually does at peak, which means it is under-loaded most days and badly overloaded on the days that matter. Second, treating it as a fridge in the maintenance schedule when its duty cycle is far harsher. Our explainer on how blast chilling works covers the process side.
The compliance layer
Hospitality carries the same two regimes as retail, and the food safety one bites harder because the product is being handled rather than sold sealed.
Under Schedule 4 of the Food Safety and Hygiene (England) Regulations 2013, keeping food likely to support the growth of pathogenic micro-organisms above 8°C is an offence. Standard practice is to run at 5°C or below for headroom.
The estate-level problem is not usually the temperature. It is the proof. A group with twenty kitchens has twenty sets of records, and an environmental health visit at any one of them can turn on whether the log book has been filled in. That is precisely why continuous monitoring earns its cost in multi-site hospitality: it produces the evidence automatically and removes a task from a section chef's shift. Our guide to temperature monitoring and HACCP goes through how to set it up so it satisfies both purposes.
On refrigerants, the systems in a typical kitchen are individually small, which means many fall below the leak check threshold. Walk-in cold rooms and cellar systems often do not. Work out the CO₂e per system rather than assuming the whole estate is out of scope, and read our guide to F-Gas duties across a multi-site estate for who holds the obligation on leased pubs.
Working around trading
This is the practical difference between hospitality and almost every other sector, and it belongs in the contract rather than in the extras.
Kitchens are unavailable through service. Cellars need access outside delivery windows. A site that trades until midnight and takes a delivery at seven has a narrow window, and if planned visits are priced for nine-to-five attendance then either the visits will not happen properly or you will be paying variations all year.
Price it honestly at tender. Ask bidders to quote planned maintenance for your actual access windows, and be specific about what those are per site. A contractor who prices for reality will look more expensive than one who prices for a mythical quiet Tuesday morning, and will cost less over the year.
What to do first if you have inherited a mixed estate
- Survey and register everything. Make, model, serial, refrigerant type and charge, age, location, per site. Nothing else works without this.
- Rank sites by risk. Stock value plus trade criticality. A high-volume cellar and a quiet back-of-house fridge do not need the same cover.
- Fix condenser access. The cheapest intervention with the longest payback.
- Standardise what you buy from now on. You cannot fix the past estate, you can stop adding to the problem.
- Get the cellar systems on a pre-summer schedule. They fail in July, so service them in April.
- Train site teams on the ten-minute check. Load lines, door seals, condenser clear, and what to report. Our list of common causes works well as a kitchen-wall reference.
The point of all this
Nobody in a restaurant group wakes up thinking about refrigeration, and that is exactly right. The goal is an estate where nobody has to. That comes from consistent kit, sensible access, a schedule aligned with how the sites actually trade, and a contractor who knows the equipment because it is the same equipment everywhere.
We work with hospitality sites across London and the South East on kitchen refrigeration, cold rooms, cellar cooling and ice machines. If you have inherited a mixed estate and want a straight assessment of what is worth keeping, we are happy to survey a sample. See how we structure planned refrigeration servicing or ask us for a quote.
About the author: Ali Elm runs Be Cool Refrigeration & Air Conditioning, a family-run London firm that has been installing, servicing and repairing commercial refrigeration and air conditioning since 2004. His F-Gas certified team has delivered more than 2,000 projects across London and the South East.
Written by
Ali Elm
Ali is the Head of Operations at Be Cool Refrigeration with over a decade of hands-on experience in HVAC and commercial refrigeration. He oversees every installation, repair, and maintenance project, making sure the work meets the highest standards. Ali holds full F-Gas certification and has worked across residential, commercial, and industrial refrigeration systems throughout London and the South East. When he is not on site, he writes these guides to help business owners and homeowners understand their cooling systems better.