Star Refrigeration

What Star Refrigeration does

Star Refrigeration is the UK's largest independent industrial refrigeration engineering company, founded in Glasgow in 1970 and operating from 11 locations nationwide with a headquarters at Thornliebank Industrial Estate. The company designs, manufactures, installs and services industrial cooling, freezing and heat pump systems using natural refrigerants (ammonia and CO2) rather than synthetic HFCs, with proprietary product families including Azanefreezer 2.0, Azanechiller 3.0, Neatpump heat pumps, Ethos energy management and Telstar PLC controls, plus bespoke CO2/NH3 cascade systems. Star holds certification to ISO 9001, ISO 14001, ISO 45001, CHAS and PED/PER, and operates through wholly-owned subsidiaries Star Technical Solutions, Starfrost (acquired 2004), Azane, SMES and Star Renewable Energy.

The company's business model combines hardware sales (packaged ammonia refrigeration systems and chillers), professional services (design, installation, commissioning, consultancy, training), and managed services (Starcare maintenance contracts, remote monitoring, alarm handling, energy management, spares) across ten vertical segments including temperature-controlled storage, food manufacturing, dairy, brewing and distilling, HVAC, leisure and ice, data centres, pharmaceutical and process, petrochemical and nuclear, and district heating. Pricing is bespoke per project with no public disclosure, and go-to-market is direct enterprise field sales through nine UK branch offices and 80+ mobile field engineers, supplemented by sector-specific enquiry forms, Platinum-level sponsorship of industry events such as Cold Chain Live, roadshow programmes, and an extensive case-study library. Named customers include DHL, Tesco, Nestle, NewCold, Arla Foods, Diageo/Guinness, First Milk, Robert Wiseman Dairies, GSK, Roche, Lundbeck, British Airways, Huntsman Tioxide, SABIC, BP Chemicals, BrewDog, Lunar Freezing, Mackie's, Pladis and Butternut Box, with relationships of three decades or longer in several instances.

Name

Star Refrigeration

Legal name

Star Refrigeration

Website

https://star-ref.co.uk

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

251–500 employees

Short description

Star Refrigeration is the UK's largest independent industrial refrigeration engineering company, founded in 1970 in Glasgow. It designs, manufactures, installs and services ammonia and CO2 cooling, freezing and heat pump systems, plus managed maintenance, for enterprise customers across food, dairy, pharma, petrochemical, data centre and district heating sectors.

Ownership category

akta.pro rank

Product category

Industrial Refrigeration Equipment

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Refrigeration & Service Industry Machinery (3580), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Commercial & Industrial Refrigeration Systems (IMAHAKAA)

akta.pro secondary industries

Refrigeration & Cold-Chain Equipment Service (IMAIABAE), Refrigeration Installation & Replacement (Commercial) (HSAOAJAD), Preventive Maintenance Programs for Refrigeration Systems (HSAOAJAL), Blast Chiller & Specialty Refrigeration Service (HSAOAJAJ)

Keywords

• Industrial refrigeration systems
• Ammonia refrigeration
• Heat pump engineering
• Cold storage solutions
• Natural refrigerant chillers

Headquarters

HQ city

Glasgow

HQ country

United Kingdom

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Industrial Refrigeration Equipment Sales: Star designs, manufactures, and sells packaged refrigeration systems (Azanefreezer, Azanechiller, Envifreeze, Envicold, Envichill), bespoke refrigeration plant, and heat pumps (Neatpump) as turnkey packages to industrial customers.
2. Installation and Commissioning Services: Full-service installation, commissioning, and project management for refrigeration systems across all industrial sectors, providing complete turnkey solutions from design through to operational handover.
3. Maintenance and Service Contracts: Ongoing maintenance contracts including Starcare tailored maintenance plans, condition-based monitoring, remote monitoring, alarm and alert handling, energy management, regulatory compliance advice, reactive call-outs, and equipment servicing through a network of nine branches.
4. Refrigeration Consultancy: Technical consultancy services including refrigeration system design, data analytics for load determination and energy optimisation, and regulatory compliance advice.
5. Training Services: Ammonia awareness training, supervision of refrigeration contractors training, and online training modules for industry professionals.
6. Spares and Replacement Parts: Supply of replacement parts and spares for industrial refrigeration equipment.

Go-to-market motion3 records

Distribution channels2 records

Marketing channels8 records

Core offering

Star Refrigeration designs, manufactures, installs, and services industrial refrigeration, cooling, and heat pump systems built around natural refrigerants (ammonia and CO2). Its packaged product lines (Azanefreezer 2.0, Envifreeze, Envicold, Envichill, Azanechiller 3.0, Neatpump heat pumps) plus bespoke engineered systems serve cold storage, food processing, dairy, brewing, pharmaceutical, petrochemical, data centre, and district heating customers. Recurring maintenance, monitoring, and training services delivered via a nine-branch UK service network round out the offering.

Product overview

Star Refrigeration is the UK's largest independent industrial refrigeration engineering company offering a comprehensive portfolio of refrigeration, cooling, and heating solutions. The core product portfolio includes the Azanefreezer 2.0 and Envifreeze/Envicold/Envichill packaged refrigeration systems for frozen, cold, and chill storage applications; Azanechiller 3.0/2.0 and Indigochiller energy efficient chillers using ammonia and low GWP refrigerants; Water Source and Air Source Neatpump heat pumps for industrial and district heating up to 90°C; Ethos Energy Management and Telstar PLC control systems for plant monitoring and automation; and bespoke CO2 Solutions and custom systems for specialized applications. The company operates subsidiaries including Starfrost (food freezing/chilling equipment), Azane (low-charge ammonia packages), Star Technical Solutions (consultancy), Star Renewable Energy (heat pumps), and SMES (electrical contracting). Star provides turnkey packages encompassing design, manufacture, installation, commissioning, and maintenance of industrial refrigeration systems, serving sectors including temperature controlled storage, food processing, dairy, brewing, pharmaceutical, petrochemical, data centres, and district heating.

Differentiator

Problem solved

Functional benefit

Brands

• Azanefreezer: Low-charge ammonia air-cooled refrigeration package for frozen storage applications.
• Azanechiller
• Neatpump
• Starfrost
• Envifreeze
• Envicold
• Envichill
• Ethos

Products and services

• Azanefreezer 2.0 Air-cooled low-charge ammonia refrigeration package for industrial frozen storage applications, delivering energy savings, reduced ammonia inventory and lower cost of ownership versus traditional ammonia systems. Targeted at cold storage operators and food manufacturers.
• Envifreeze Star packaged refrigeration system designed for industrial freezing applications. Sold as a standalone packaged unit to industrial customers.
• Envicold Packaged refrigeration system purpose-built for industrial cold storage applications and sold as a standalone product.
• Envichill Packaged refrigeration system targeted at industrial chilling applications and sold as a standalone product.
• Azanechiller 3.0 Energy efficient ammonia chiller for industrial process cooling and data centre applications, delivering high efficiency, resilience and a low carbon footprint, optimised for UK ambient temperatures with free cooling thermosyphon capability.
• Azanechiller 2.0 Low-charge ammonia chiller for process cooling applications, previously delivered as part of a sterile production plant construction project for an industrial customer.
• Water Source Neatpump Heat pump that extracts warmth from water sources such as rivers, lochs and flooded mine shafts, generating heat up to 90°C for district heating, commercial buildings and industrial heating customers.
• Air Source Neatpump Air source heat pump that extracts warmth from outside air and boosts temperature for distribution via wet central heating systems, suitable for commercial buildings and residential district heating customers.
• Indigochiller High-efficiency water-chilling system using low GWP refrigerants such as HFOs and ammonia with thermosyphon free cooling, designed specifically for data centre cooling customers.
• Envitherm Transcritical CO2 heat pump providing high-grade heat recovery for building heating and water cooling applications.
• Ethos Energy Management Energy monitoring and management control system for refrigeration plant, sold as a standalone control system to optimise energy efficiency and track operational performance for industrial customers.
• Telstar PLC Programmable logic controller system for controlling refrigeration plant operating and safety functions, linked to customer DCS systems for remote alarm and monitoring; sold as a standalone product.
• CO2 Solutions Custom-designed carbon dioxide refrigeration systems, including transcritical CO2 and cascade systems, sold as bespoke engineered packages to industrial customers across food, beverage and pharmaceutical sectors.
• Bespoke Refrigeration Systems Custom-tailored refrigeration solutions designed and built to meet specific customer requirements across petrochemical, pharmaceutical, dairy, brewing, leisure and other industrial sectors; sold as bespoke engineered packages.
• Starfrost Spiral Freezers and Coolers Food freezing and chilling equipment specialist offering Helix spiral freezers and spiral coolers, sold as standalone equipment to food processing customers under the Starfrost subsidiary brand.
• Refrigeration System Design Engineering design service for industrial refrigeration systems, including load calculation, equipment selection and layout for new builds and retrofits; sold to industrial customers as a contracted design service.
• Refrigeration Installation and Commissioning Turnkey installation, commissioning and project management service for industrial refrigeration systems across all industrial sectors; sold as a contracted installation package.
• Tailored Maintenance and Starcare Service Contracts Ongoing tailored maintenance contracts, including Starcare, condition-based monitoring, remote monitoring, alarm and alert handling, energy management, regulatory compliance advice, reactive call-outs, equipment servicing, asset management and plant upgrades; delivered through a network of nine UK branches.
• Remote Monitoring and Alarm Handling Remote monitoring of refrigeration plant with alarm and alert handling, sold as a managed service subscription to industrial customers including data centres and banks.
• Data Monitoring and Load Determination Data collection, analysis and load determination services that size refrigeration and heating systems correctly, identify spare capacity and support energy optimisation for industrial customers.
• Refrigeration and Ammonia Training Ammonia awareness training, supervision of refrigeration contractors training and online training modules for industry professionals; sold as a paid training service.
• Refrigeration Spares and Replacement Parts Supply of replacement parts and spares for industrial refrigeration equipment, sold as a standalone offering to industrial customers.

Quantifiable outcome

• 38% savings in energy bills with thermosyphon free cooling chillers (annualised COP >14, 30% reduction in maintenance costs)
• +13 more outcomes

Named customers26 records

Segments11 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

18 partnerships are on record, tiered core, minor and major.

• Star Technical SolutionscoreStrategic or Co-development PartnerStar Technical Solutions (STS) operates as Star's technical advisory arm, providing independent consultancy on refrigeration engineering issues. It is part of the Star Technology Group of companies alongside Starfrost, Star Renewable Energy, Azane, and SMES.
• StarfrostcoreStrategic or Co-development PartnerStarfrost is a food freezing and chilling equipment specialist owned by Star Refrigeration. Starfrost designs and manufactures Helix spiral freezers and coolers. Joint projects include Butternut Box spiral freezer with ammonia plant, Bakkavor spiral chiller, and other bakery and food freezing projects. Mr Whippy ordered a Starfrost cooling system for its Sheffield production facility.
• AzanecoreStrategic or Co-development PartnerAzane (Azane.inc) is part of the Star Technology Group. Azane products include Azanefreezer and Azanechiller packaged ammonia refrigeration systems. Star holds Azane as a subsidiary for its low-charge ammonia product line.
• SMEScoreStrategic or Co-development PartnerSMES (mechanical and electrical contractors) is part of the Star Technology Group. SMES provides mechanical and electrical contracting services supporting Star's installation projects.
• Star Renewable EnergycoreStrategic or Co-development PartnerStar Renewable Energy (neatpumps.com) is part of the Star Technology Group, responsible for Neatpump heat pump technology used in district heating and industrial heating applications. Developed world's largest zero carbon 90C district heat pump in Drammen, Norway.
• Entre-PrisesminorStrategic or Co-development PartnerEntre-Prises is a leading designer and installer of artificial climbing walls. Star collaborated with Entre-Prises to design and install the ice-climbing wall for The Ice Factor in Kinlochleven, Scotland.
• Foster Wheeler (FWEL)minorImplementation/ SI/ Consulting PartnerFoster Wheeler (now part of Wood Group) provided engineering, procurement, construction management and validation/commissioning for Lundbeck Pharmaceuticals project, bringing Star in as specialist refrigeration contractor under their project management.
• NestlemajorStrategic or Co-development PartnerStar has been providing refrigeration solutions to Nestlé UK since 1990. This long-term partnership led to multiple projects including the Nestlé Halifax heat pump retrofit. Nestlé's global commitment to natural refrigerants drove the collaboration.
• Glasgow Housing AssociationmajorStrategic or Co-development PartnerGlasgow Housing Association partnered with Star Renewable Energy and WSP Parsons Brinkerhoff to deliver UK's largest residential air source heat pump at Hillpark, providing low carbon heating to 351 homes across seven high-rise blocks in Glasgow.
• WSP Parsons BrinkerhoffminorImplementation/ SI/ Consulting PartnerEngineering consultancy partner in the Hillpark district heating project alongside Glasgow Housing Association and Star Renewable Energy.
• RWE SolutionsmajorImplementation/ SI/ Consulting PartnerRWE Solutions contracted Star for design and installation of new industrial refrigeration system at Diageo's Guinness Brewery in Dublin. RWE owns, operates and maintains all utilities including refrigeration under a 15-year contract.
• DiageomajorChannel Partner/ Reseller/ DistributorDiageo is the global drinks company operating the Guinness St. James's Gate Brewery in Dublin where Star completed major refrigeration upgrade through RWE Solutions contract.
• Robert Wiseman DairiesmajorChannel Partner/ Reseller/ DistributorRobert Wiseman Dairies contracted Star for 1.5 million pound cooling plant at their 80 million pound Bridgwater facility, producing 500 million litres of milk per year for major UK retailers.
• Arla FoodsmajorChannel Partner/ Reseller/ DistributorArla Foods engaged Star for multi-phase cooling plant installations at Stourton, Leeds dairy, including 5MW ammonia system for cottage cheese production and broader process cooling requirements.
• DHLmajorChannel Partner/ Reseller/ DistributorStar completed major upgrade of frozen storage refrigeration at DHL's Daventry distribution centre serving J D Wetherspoon. Project is part of a long-term partnership between Star Refrigeration and DHL.
• NewColdmajorChannel Partner/ Reseller/ DistributorStar completed Phase 2 of project doubling cold storage capacity at NewCold's fully automated high bay warehouse in Corby, Northamptonshire. Phase 3 underway with additional cold store ammonia pump system installation.
• TescomajorChannel Partner/ Reseller/ DistributorLong-term collaboration recognised at Cold Chain Sustainability Awards 2026. Star helped Tesco achieve 10% energy savings across eight temperature-controlled distribution sites using Ethos energy management.
• Huntsman CorporationmajorChannel Partner/ Reseller/ DistributorStar supplied custom-built ammonia refrigeration package as part of Huntsman Tioxide's 50 million pound ICON 2 Project extension at Greatham site, Teesside, for titanium dioxide production.

Scale indicators20 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Danfoss A/S: Danish refrigeration and climate solutions provider offering industrial refrigeration components, controls, and CO2/ammonia system expertise. Comparable to Star as a supplier into industrial refrigeration, cold chain, and heat pump markets, with complementary controls and component portfolio overlapping with Star's Telstar PLC and Ethos offerings.
• GEA Group: German industrial engineering group with a dedicated Refrigeration Technologies division serving food processing, dairy, brewing, and cold storage customers. Highly comparable to Star in industrial ammonia refrigeration systems, packaged compressor packages, and food industry customers, with a deeper international footprint.
• Mayekawa Mfg. Co. Japanese industrial refrigeration specialist known for ammonia and CO2 systems serving food processing, cold storage, and industrial customers worldwide. Directly comparable to Star's ammonia and heat pump expertise with deeper international reach and stronger presence in Asia-Pacific industrial refrigeration.
• Emerson Climate Technologies: Major refrigeration components and systems provider (Copeland compressors, controls) serving industrial and commercial refrigeration markets globally. Comparable to Star as a refrigeration technology supplier with similar customer base in food, cold chain, and industrial cooling.

Broad incumbents

• Trane Technologies: Global HVAC and refrigeration major (Trane and Thermo King brands) with chillers and commercial refrigeration offerings. Comparable to Star in industrial and commercial chillers and refrigeration, with much broader portfolio and stronger data centre presence.
• Daikin Industries: Global HVAC and refrigeration leader with growing industrial refrigeration and natural refrigerant (CO2, ammonia) offerings, including heat pumps. Comparable to Star as a competitor in commercial and industrial refrigeration, with much larger scale and global reach.
• Johnson Controls International: Global HVAC and refrigeration incumbent with industrial and commercial refrigeration offerings across ammonia, CO2, and synthetic refrigerants. Comparable because it competes with Star in industrial refrigeration, chillers, and building HVAC, but with substantially broader product portfolio and global reach that Star lacks.
• Carrier Global Corporation: Global refrigeration and HVAC leader with strong industrial refrigeration and cold chain presence. Comparable to Star as a direct competitor in industrial ammonia/CO2 systems and cold chain refrigeration, but operating globally across both commercial and industrial segments.

Others

• Carel Industries: Italian manufacturer of refrigeration and HVAC control solutions serving industrial, commercial, and data centre customers globally. Comparable to Star as a controls and electronics provider to the same industrial refrigeration customer base, with overlapping functionality to Star's Ethos and Telstar PLC product lines.
• Bitzer SE: German manufacturer of refrigeration compressors and components used in industrial and commercial refrigeration systems. Comparable to Star as a key enabler of the same refrigeration ecosystem, supplying compressor technology that Star integrates into its Azane and packaged systems.

Market position

Strengths5 records

Weaknesses1 record

Competitive moat6 records

Key risks1 record

Key highlights7 records

Customer concentration

• Xx.com/starrefrig
• LinkedInlinkedin.com/company/star-refrigeration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Star Refrigeration