What Nucore does

Nucore Group is a UK-headquartered, PE-backed turnkey provider of safety-critical integrated engineering solutions for hazardous and regulated environments, formed in 2016 through the combination of legacy firms HVAC & Refrigeration Engineering Ltd (est. ~20+ years) and Oteac Ltd (est. 30+ years). The company designs, manufactures, installs, commissions and maintains ATEX/IECEx-certified HVAC and refrigeration systems (proprietary HAZcool for Zone 1/Zone 2 hazardous areas and Climarine for non-hazardous areas), fire detection and suppression systems (including FirePro condensed aerosol via a UK distribution partnership), gas detection, security systems (CCTV, access control, intruder alarms, PAVA with ARC remote monitoring), and certified fire-rated and blast-rated doors (DNV, BV, Lloyds, USCG, MED, ABS, NORSOK). Manufacturing is in-house under ISO 9001 with ISO 45001 occupational health and safety, ISO 14001 environmental management, BAFE SP203-1, SSAIB, IECEx, F-Gas, SELECT, UVDB, UKAS and other accreditations, supporting a vertically integrated lifecycle services model.

The business primarily serves enterprise customers in oil & gas (onshore and offshore platforms, FPSOs), marine (vessels, support ships, offshore structures), renewables (offshore wind substations, hydrogen, carbon capture) and petrochemical sectors, with secondary exposure to public and private sector clients such as local authorities, distilleries, shopping centres and play centres. Revenue is generated through a combination of professional services (design, installation, commissioning, maintenance contracts including multi-year frameworks) and hardware sales (proprietary HAZcool/Climarine HVAC units, certified doors, safety equipment). Pricing is bespoke and quote-based with no published tiers. Go-to-market is sales-led via direct enterprise field sales, a dedicated Sales Director, regional UK offices (Aberdeen HQ, Dundee, planned Ascot and Hull/Newcastle) and channel partnerships (Petrotec in Qatar for the Middle East).

Ownership sits with Beechbrook Capital (lead, via 2020 refinance) alongside Lonsdale Capital and senior management. The group operates from Aberdeen (head office, 127 headcount at FY2019, now in the 101-250 band), Dundee (since 2021), with planned Southern England (Ascot) and Northern England (Hull/Newcastle) offices and an international footprint covering Qatar (via Petrotec) and Russia (Sakhalin project). Following the 2022 acquisition of M&M Services (electrical and data communications), the integrated stack now spans HVAC, fire, security, certified doors, safety equipment and electrical — positioning Nucore as a single-source provider for safety-critical maintenance scopes on offshore, marine and increasingly renewables assets.

Name

Nucore

Legal name

Nucore Group Ltd

Website

https://nucore-group.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

101–250 employees

Short description

Nucore Group is an Aberdeen-headquartered, PE-backed turnkey provider of safety-critical HVAC, fire, security, certified doors and safety equipment for hazardous environments, serving oil & gas, marine, renewables and petrochemical enterprises across the UK and internationally.

Ownership category

akta.pro rank

Product category

Hazardous Area Engineering Services

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB)

akta.pro secondary industry

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

Keywords

• Hazardous area HVAC
• Fire safety systems
• Offshore engineering services
• Certified marine doors
• Safety critical solutions

Headquarters

HQ city

Aberdeen

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. HVAC & Refrigeration Services: Full lifecycle services including design, manufacture, installation, maintenance and commissioning of HVAC and refrigeration systems for hazardous and non-hazardous environments
2. Fire Detection and Suppression: Fire detection systems, suppression systems (water-based, gaseous, condensed aerosol), design, installation and maintenance services
3. Security Systems: CCTV, access control, intruder alarms, PAVA systems design, installation, monitoring and maintenance
4. Certified Doors: Supply, installation, maintenance of fire rated and blast proof doors for offshore, marine and modular cabin applications
5. HVAC Equipment Sales: Sale of proprietary HAZcool and Climarine branded HVAC equipment including chillers, split systems, portable units, compressors, and bespoke solutions
6. Safety Equipment: Supply of safety equipment including gas detection, breathing apparatus, life jackets, fire safety equipment, and survival gear

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Nucore Group provides safety critical integrated engineering solutions covering HVAC and refrigeration equipment manufacturing, fire detection and suppression, security systems, and certified fire and blast doors for hazardous environments. Its proprietary HAZcool and Climarine branded HVAC products are supported by full lifecycle services from design and manufacture through installation, commissioning, maintenance and repair. The company primarily serves onshore and offshore oil and gas, marine, renewables, petrochemical and public/private sector clients across the UK and internationally.

Product overview

Nucore Group is a turnkey provider of safety critical integrated solutions combining HVAC & refrigeration, fire safety, security, certified doors, and safety equipment products and services. The company operates two primary branded HVAC product lines: HAZcool for hazardous areas (Zone 1, Zone 2) and Climarine for non-hazardous environments. The group encompasses legacy companies OTEAC (fire and gas detection, suppression), HVAC & Refrigeration (climate control), and M&M Services (electrical and data communications). Services span the full lifecycle from design and manufacture to installation, commissioning, and ongoing maintenance. The company serves oil and gas, marine, renewables, petrochemical, and public/private sector clients with both product sales and integrated service delivery.

Differentiator

Problem solved

Functional benefit

Brands

• HAZcool: Hazardous area HVAC equipment brand including chillers, split systems, portable units, compressors for Zone 1 and Zone 2 explosive atmospheres
• Climarine
• OTEAC
• HVAC & Refrigeration

Products and services

• HAZcool Hazardous Area HVAC Equipment
• Climarine Non-Hazardous Area HVAC Equipment
• HVAC Design Service

Quantifiable outcome

• Reduced quotation cost by 50% through equipment reuse and redesign on vessel AC upgrade project
• +3 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered minor and core.

• Carbon ZerominorOthers · 1 January 2021Carbon footprint measurement and carbon neutral accreditation services. Worked with Nucore to calculate carbon footprint of 93 tonnes and identify reduction initiatives including switching to green energy provider.
• PetroteccoreChannel Partner/ Reseller/ Distributor · 1 September 2019HVAC & Refrigeration Ltd (part of Nucore Group) signed agreement with Petrotec, Qatar for full range of HVAC products and services distribution in Middle East. Petrotec established in 1989 with over 30 years experience supporting energy sector. Partnership provides design, project management, engineering, procurement, installation and commissioning of HVAC projects along with system compliance services including LEV testing, F-Gas compliance, and maintenance.
• FirePro UK LtdcoreTechnology or Integration · 1 September 2019Distribution agreement for Nucore Group (previously Oteac) to design and install FirePro condensed aerosol fire suppression systems. FirePro developed condensed aerosol technology following 1994 Montreal Protocol ban on ozone-depleting substances. Nucore provides customer choice in fire suppression systems with environmental benefits.

Scale indicators9 records

Recent moves12 records

Expansion highlights6 records

Direct peers

• Heinen & Hopman Engineering: Specialist HVAC and refrigeration manufacturer serving offshore, marine and hazardous area environments. Closest direct competitor to Nucore's HAZcool and Climarine product lines, serving the same offshore wind and oil & gas platforms.
• Hamworthy (Wärtsilä): Marine HVAC and refrigeration systems supplier, part of Wärtsilä. Directly comparable to Nucore's marine HVAC offering with overlapping certifications and customer base in shipyards and offshore operators.
• FläktGroup: Industrial HVAC and air handling unit manufacturer with hazardous area product lines serving oil & gas, marine and industrial customers across Europe and the Middle East.
• Airedale International: UK-based manufacturer of commercial and industrial HVAC, chiller and precision cooling equipment. Comparable to Nucore's Climarine chiller and split-system lines for industrial and commercial applications.
• Coster Group: European HVAC and refrigeration equipment manufacturer with hazardous-area and marine solutions. Similar scale and product overlap to Nucore in industrial HVAC/refrigeration equipment.

Broad incumbents

• Daikin Applied (Daikin Industries): Global HVAC and refrigeration equipment manufacturer with industrial/commercial product lines including chillers and air handling. Significantly larger than Nucore but overlaps on commercial/industrial chiller and split-system categories served by Climarine.
• Trane Technologies: Global HVAC and refrigeration major offering commercial and industrial chillers, air handlers and packaged units. Larger incumbent competing in the same broader commercial HVAC space, though without hazardous-area specialization.
• Carrier Global: Global HVAC and refrigeration incumbent serving commercial, marine and industrial segments including Carrier Marine. Overlaps with Nucore on refrigeration and marine HVAC categories.
• Kidde Products (UTC/Carrier) fire suppression: Major fire detection and suppression products supplier serving offshore/marine customers comparable to Nucore's Oteac heritage fire and gas detection business.

Regional players

• OptaSense (Luna Innovations): Distributed acoustic sensing provider for pipeline and infrastructure monitoring, formerly employing Nucore Sales Director Joe Oberlé. Related sector (oil & gas, renewables, infrastructure) with comparable UK operations and overlapping customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

Compliance22 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries3 records

Funding overview

Funding rounds2 records

Investors2 records

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

M&A1 record

Investments

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

Frequently asked questions about Nucore