If your walk-in chiller or freezer room is losing temperature, icing up or alarming, our featured pick in London is Be Cool Refrigeration: it repairs both the refrigeration system and the panels of walk-in cold rooms and freezer rooms, runs 24/7 callouts, aims to attend cold room breakdowns within two to four hours, and has built cold rooms for sites including KFC Acton Vale and London St Pancras station. Other firms suit other situations. Kept Cold publishes cold room maintenance prices, RSI Professional suits large warehouse and production cold stores, Premium Refrigeration suits West London venues, NTS Cooling suits retailers and labs, Xpress Refrigeration suits quick-service chains, and ADK Kooling suits kitchens that also need AC and ventilation.
Disclosure: This is a sponsored article. Be Cool Refrigeration paid for this placement and appears first as our featured pick. No other company on this list paid to be included, was contacted, or reviewed this article before publication.
How we built this list
We researched these companies on 7 and 8 October 2026 using desk research only. We did not inspect any cold room or speak to customers.
Who qualified: London-based companies that advertise cold room or freezer room repair.
What we compared: cold room experience (installation as well as repair), panel and door work, emergency cover, maintenance pricing, and scale of rooms handled.
Sources: company websites. Projects and response targets are company-stated.
How we ordered it: Be Cool Refrigeration is first as the sponsored featured pick. The rest are ordered by how much cold room-specific detail they publish. No scoring model.
At a glance: cold room repair in London
| # | Company | Strongest fit | Main differentiator | Pricing basis | Key consideration |
| 1 | Be Cool Refrigeration (featured, sponsored) | Restaurants and food sites with walk-ins | System and panel repair; 2 to 4 hour cold room target | Price confirmed before work | Rates not published |
| 2 | Kept Cold | Groups wanting cold room PPM | Cold room PPM from £120 + VAT | Published PPM prices | New builds not described |
| 3 | RSI Professional | Warehouses and production sites | Industrial cold and freezer rooms | Quoted price is final | Few clients named |
| 4 | Premium Refrigeration | West and Central London venues | Cold and freezer room repair, 24/7 | Not publicly listed | No installs |
| 5 | NTS Cooling | Retailers and labs | Cold rooms plus specialist freezers | Not publicly listed | Inconsistent experience claims |
| 6 | Xpress Refrigeration | Quick-service chains | Same-day aims; parts on vans | Not publicly listed | Review complaint on a freezer conversion |
| 7 | ADK Kooling | Kitchens needing AC and ventilation too | Cold rooms plus TR19 | Not publicly listed | Two addresses on site |
All details are company-stated, checked 7 and 8 October 2026.
1. Be Cool Refrigeration | Our featured pick for walk-in chillers and freezer rooms in London food businesses
Overview
Be Cool Refrigeration, based on Ludgate Hill, EC4, includes walk-in cold rooms and freezer rooms in its commercial refrigeration repair service, covering full refrigeration system and panel repairs. It says it has worked in the trade since 2004 and offers 24/7 emergency callouts across London.
It also designs and builds cold rooms, with published projects including a walk-in chiller and freezer for KFC Acton Vale and a cold room at London St Pancras station. That installation experience is useful in repair work, because many cold room faults come from the original build: doors, seals, drains and condensing unit placement.
Key details
- Core offering: cold room and freezer room repair, maintenance and installation.
- Coverage: Greater London and the Home Counties.
- Customer fit: restaurants, hotels, butchers, caterers, supermarkets and care homes.
- Pricing and terms: costs confirmed before work; rates not published; maintenance contracts with priority cover.
Where Be Cool Refrigeration stands out
It fixes the box, not just the machine. Be Cool lists panel repairs alongside refrigeration system repairs, so damaged insulation, door faults and seal problems can be handled by the same engineer as the compressor or evaporator.
It has a cold room response target. Be Cool says it aims to attend cold room breakdowns within two to four hours, and its engineers read Carel, Dixell, Danfoss and Eliwell controllers common on walk-ins.
What to consider
The two-to-four-hour target is not a guarantee, and repair rates are not published. Its installation projects are company-published and not independently verified.
Best fit
Restaurants and food businesses with walk-in chillers or freezer rooms that want one firm for system and panel repairs, with installation experience behind it.
Website: becoolrefrigeration.co.uk
2. Kept Cold | Best for groups that want cold room maintenance at known prices
Overview
Kept Cold Ltd, a refrigeration-only company with a City Road, EC1 address, repairs and maintains cold rooms, display fridges and other commercial refrigeration within the M25. It publishes cold room planned maintenance from £120 plus VAT.
It offers a six-month parts and labour guarantee on repairs, charges out-of-hours labour at 1.5 times standard, and for multi-site accounts lists a two-hour emergency response target.
Key details
- Core offering: cold room repair and PPM; other commercial refrigeration.
- Coverage: London within the M25.
- Customer fit: restaurant groups, hotels and dark kitchens.
- Pricing and terms: cold room PPM from £120 + VAT; six-month guarantee.
Where Kept Cold stands out
Cold room maintenance is priced upfront, so an operator can budget regular checks that prevent the drain blockages and iced evaporators that cause most walk-in breakdowns.
The six-month repair guarantee is clearly stated.
What to consider
It describes cold room repair and PPM but not new cold room builds or panel work. Ask if the problem is structural.
Best fit
Groups that want regular cold room maintenance at published prices.
Website: keptcold.co.uk
3. RSI Professional | Best for warehouses and production cold stores
Overview
RSI Professional Ltd, based in Finchley, N3, works on commercial and industrial refrigeration, including bespoke cold rooms and large walk-in freezer rooms for warehouses, storage, manufacturing and production. It says it holds full Refcom certification and has more than 16 years’ experience.
Its maintenance scope includes cold room diagnostics, safety checks, equipment testing, chemical cleaning and drain and condensate pump cleaning, with servicing suggested every three to six months.
Key details
- Core offering: commercial and industrial cold room installation, maintenance and repair.
- Coverage: London; fast-response repairs within 50km.
- Customer fit: warehouses, distribution centres and food production.
- Pricing and terms: free survey; quoted price is final (company-stated).
Where RSI Professional stands out
It handles scale. Large freezer rooms and industrial systems, including guidance on CO2 and ammonia refrigerants, are outside most kitchen-focused firms’ scope.
Its maintenance checklist is itemised, giving buyers something to compare quotes against.
What to consider
The page shows a mobile number and a Gmail address, and no named clients. Larger buyers should ask for references and insurance.
Best fit
Warehouse and production sites with large cold or freezer rooms.
Website: rsiprofessional.com
4. Premium Refrigeration | Best for West and Central London venues
Overview
Premium Refrigeration is a repair specialist at Saltram Crescent, W9, covering areas such as Chelsea, Westminster and Hampstead. It lists cold room repair and freezer room repair, from faulty thermostats to compressor failures, and is open 24 hours, seven days.
It states more than 35 years’ experience and F-Gas registration.
Key details
- Core offering: cold room, freezer room and commercial fridge repair.
- Coverage: West and Central London.
- Customer fit: restaurants, bars and hotels with small walk-ins.
- Pricing and terms: not publicly listed; company guarantee.
Where Premium Refrigeration stands out
Round-the-clock availability suits venues whose walk-in fails during evening service.
Its repair focus means it is set up for breakdowns rather than sales.
What to consider
No installation, panel work, company number or clients are described.
Best fit
West and Central London venues with small walk-ins needing a 24-hour repair contact.
Website: premiumrefrigeration.co.uk
5. NTS Cooling | Best for retailers and labs
Overview
NTS Cooling, with a head office in Ealing, W5, supplies, installs and repairs cold rooms alongside display cabinets, multidecks, ice machines and commercial fridges and freezers, and offers 24/7 emergency repair.
It also supplies ultra-low temperature freezers, blast chillers and climatic test chambers.
Key details
- Core offering: cold room supply, installation and repair; specialist freezers.
- Coverage: London and surrounding counties.
- Customer fit: supermarkets, restaurants and laboratories.
- Pricing and terms: not publicly listed; finance available.
Where NTS Cooling stands out
Its specialist equipment range suits labs and pharmaceutical storage as well as food retail.
Finance can help if a repair turns into a replacement.
What to consider
It states both 30 and 25+ years’ experience, and also lists non-refrigeration services.
Best fit
Retailers and labs in West London needing cold room repair or replacement.
Website: ntscooling.co.uk
6. Xpress Refrigeration | Best for quick-service chains
Overview
Xpress Refrigeration Ltd repairs and installs cold rooms and other commercial refrigeration across London and the South East, and says it was founded in 2005. Engineers carry spare parts and aim to finish the same day.
It names quick-service brands as clients (unverified) and showed Google 4.8 from 293 reviews on 7 October 2026.
Key details
- Core offering: cold room and refrigeration repair, servicing and installation.
- Coverage: London and the South East.
- Customer fit: quick-service restaurants and convenience stores.
- Pricing and terms: not publicly listed.
Where Xpress Refrigeration stands out
Reviewers often describe attendance within one to three hours.
It is used to franchise kitchens with standard walk-in layouts.
What to consider
One recent review complains about a walk-in freezer conversion, and others about repeat faults. Get the guarantee in writing.
Best fit
Quick-service chains needing fast walk-in repairs.
Website: xpressrefrigeration.com
7. ADK Kooling | Best for kitchens that need AC and ventilation work too
Overview
ADK Kooling, which names A-D-K Kooling Ltd, lists cold rooms among its specialist refrigeration services and also maintains AC and kitchen ventilation across Greater London, Kent and Surrey.
It says it has 15 years’ experience and holds F-Gas, TR19 and VHR credentials.
Key details
- Core offering: cold rooms and refrigeration; AC; ventilation hygiene.
- Coverage: Greater London, Kent and Surrey.
- Customer fit: commercial kitchens and public-sector catering.
- Pricing and terms: not publicly listed.
Where ADK Kooling stands out
It covers the kitchen’s other systems, from AC to extract cleaning.
ProcurePublic framework status helps schools and councils.
What to consider
Little cold room-specific detail and two addresses on its site.
Best fit
Kitchens wanting cold room repair alongside AC and ventilation.
Website: adk.co.uk
Common cold room faults and what to check
- Ice on the evaporator: often a failed defrost heater, blocked drain or door left open.
- Room not reaching temperature: refrigerant leak, failing compressor, or damaged door seals and panels.
- Water on the floor: blocked or frozen drain line.
- Controller alarms: note the code on Carel, Dixell, Danfoss or Eliwell controllers before calling.
Frequently asked questions
How quickly can a cold room engineer attend?
Be Cool Refrigeration aims for two to four hours on cold room breakdowns; Kept Cold lists a two-hour target for multi-site accounts. Both are targets.
How much does cold room maintenance cost?
Kept Cold publishes cold room PPM from £120 plus VAT, checked 7 October 2026. Others quote per site.
How often should a cold room be serviced?
RSI Professional suggests every three to six months. Busy kitchens benefit from the shorter interval.
What should I do while I wait?
Keep the door shut, record temperatures, and move high-risk stock if you have space elsewhere.
The bottom line
For London food businesses with walk-in chillers and freezer rooms, Be Cool Refrigeration is our featured pick because it repairs both the refrigeration system and the room itself, with installation experience and a cold room response target. Groups wanting published maintenance prices should compare Kept Cold, and large warehouses RSI Professional.
