H-DEUX LTD
H-DEUX LTD is a UK-based clean-tech engineering company founded in 2023 that develops emission capture and ammonia-based adsorption cooling systems for maritime, rail, and electric vehicle markets, selling proprietary capital equipment directly to enterprise customers.
- Company typePrivate
- Founded2023
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What H-DEUX LTD does
H-DEUX LTD is a UK-based clean-tech engineering company founded in 2023 and headquartered in London. The company develops emission control and sustainable cooling systems for the maritime, rail, and electric vehicle sectors, addressing regulatory compliance and decarbonization demands in transportation. H-DEUX operates through a single UK entity with no disclosed subsidiaries, parent company, or institutional investors.
The company's portfolio consists of three core products. PureMarine is a multi-pollutant emission capture system for maritime vessels, designed as a compact, modular, and fuel-flexible unit with continuous operation and circular economy capabilities. SustainCool is an ammonia-based adsorption cooling system for battery-driven applications including electric vehicles, data centers, and off-grid storage, delivering passive cooling without compressors or synthetic refrigerants. FlexiCapture is a compact emissions capture system for rail locomotives, designed for easy retrofit with lower installation and running costs than conventional solutions. The underlying technology centers on adsorption-based engineering and multi-pollutant capture architectures rather than software or AI.
H-DEUX operates a B2B enterprise sales model, targeting maritime, rail, and EV customers through direct website inquiries and email contact. Revenue is generated through one-time license sales of proprietary systems, though pricing is not publicly disclosed. The company is privately held with no disclosed funding rounds, no named customers, no partnerships, no patents, and no management team bios publicly available. The Book Online page currently indicates no active booking availability.
H-DEUX LTD firmographics
Firmographics- Name
- H-DEUX LTD
- Legal name
- H-DEUX
- Website
- https://h-deux.co.uk
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- H-DEUX LTD is a UK-based clean-tech engineering company founded in 2023 that develops emission capture and ammonia-based adsorption cooling systems for maritime, rail, and electric vehicle markets, selling proprietary capital equipment directly to enterprise customers.
- Ownership category
- akta.pro rank
H-DEUX LTD industry classification
Industry- Product category
- Clean Technology & Environmental Engineering Systems
- NAICS
- Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Auto Controls For Regulating Residential & Comml Environments (3822)
- akta.pro primary industry
- HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB)
- akta.pro secondary industries
- Marine HVAC, Refrigeration & Ventilation Systems (IMAJAIAE), Automotive HVAC Modules & Integrated Climate Units (IMACALAA), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)
Keywords
Where H-DEUX LTD is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
H-DEUX LTD business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure
Revenue model
- Emissions Control Systems Sales: Sale of proprietary emissions capture systems (PureMarine for maritime, FlexiCapture for rail) to transportation and industrial customers. Products are sold as solutions for regulatory compliance and sustainability goals.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
H-DEUX LTD product offering
Product offeringCore offering
H-DEUX LTD designs and supplies clean-tech engineering systems for emission control and sustainable cooling across transportation sectors. Its portfolio comprises three proprietary products: PureMarine (multi-pollutant emission capture for maritime vessels), SustainCool (ammonia-based adsorption passive cooling for EVs, data centers, and off-grid storage), and FlexiCapture (compact, retrofit-friendly emissions capture for rail locomotives). The company sells these systems directly to enterprise customers in maritime, rail, and electric vehicle industries.
Product overview
H-DEUX LTD is a clean mobility and smart systems technology company offering a portfolio of three distinct emission capture and cooling products across transportation sectors. The portfolio consists of PureMarine (maritime vessels), SustainCool (electric vehicles/battery systems), and FlexiCapture (rail/rolling stock). These products share common engineering themes—compact modular design, multi-pollutant capture capability, and sustainability-focused technologies using natural refrigerants and circular economy principles.
Differentiator
Problem solved
Functional benefit
Brands
- PureMarine: Multi-Pollutant Emission Capture System for Maritime Vessels - captures wide range of emissions, compact and modular, fuel-flexible, continuous operation, circular economy ready.
- SustainCool
- FlexiCapture
Products and services
- PureMarine Multi-Pollutant Emission Capture System for maritime vessels that captures a wide range of emissions in a single compact, modular, fuel-flexible system designed for continuous operation, with circular-economy-ready reuse of captured emissions for industrial applications.
- SustainCool Ammonia-based adsorption cooling system that delivers efficient passive cooling without compressors or synthetic refrigerants, designed for battery-driven systems including electric vehicles, data centers, and off-grid storage, with zero emissions, ultra-low energy use, compact silent operation, and smart adaptive thermal control.
- FlexiCapture Emissions capture system for rail locomotives designed for easy retrofit with minimal modification, offering high capture efficiency with lower installation and running costs compared to conventional solutions, built to meet global emissions standards.
Companies that use H-DEUX LTD
Customer profileSegments3 records
Ideal customer profiles3 records
H-DEUX LTD technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
H-DEUX LTD partnerships and signals
Strategic signalScale indicators1 record
Recent moves5 records
Expansion highlights4 records
H-DEUX LTD competitors and assessment
Company assessmentBroad incumbents
- Wärtsilä: Large marine technology and engine manufacturer offering exhaust gas cleaning, emissions reduction, and fuel-flexible systems for ships. Direct overlap with H-DEUX's PureMarine multi-pollutant capture offering in the maritime segment, but at vastly greater scale and with established certifications.
- Hanon Systems: Major automotive thermal-management supplier producing HVAC modules, battery cooling, and integrated climate units for EVs. Closest scaled incumbent to H-DEUX's SustainCool EV battery cooling value proposition, serving global OEMs with established component qualifications.
- Alfa Laval: Global supplier of marine HVAC, heat exchangers, and exhaust gas cleaning / emissions control equipment. Comparable to both PureMarine (marine emissions) and the thermal-management components underlying SustainCool, with a broad installed base across shipyards and operators.
- Gentherm: Specialist in thermal management technologies for automotive and medical applications, including battery and electronics cooling for EVs. Comparable to SustainCool's focus on battery-driven systems, with deep OEM relationships and a much larger product portfolio.
- Wabtec: Global rail equipment and services provider with emissions-control and energy-efficiency solutions for locomotives. Direct comparable to H-DEUX's FlexiCapture rail product, with established rail operator relationships and full locomotive-system capabilities.
- Mahle: Major automotive supplier with a strong thermal-management portfolio including battery cooling, HVAC modules, and e-mobility thermal systems. Comparable to SustainCool's EV thermal-management offering, serving global vehicle OEMs with certified, mass-production components.
- Modine Manufacturing: Diversified thermal-management manufacturer serving commercial vehicles, data centers, and industrial markets with cooling and heat-transfer products. Comparable to H-DEUX across multiple end markets (EV/vehicle thermal, data center cooling) at much larger scale.
Emerging players
- Norsepower: Finland-based provider of auxiliary wind propulsion and emissions-reduction solutions for commercial shipping. Targets the same maritime decarbonization buyers as PureMarine and represents a competing emissions-reduction approach within the shipping industry.
- Captura: US-based direct ocean CO2 capture startup using novel capture chemistry. While focused on ocean rather than ship-stack capture, it shares H-DEUX's circular-economy / carbon-capture technology orientation and emerging-stage cleantech profile.
- Climeon: Swedish deeptech company commercializing waste-heat recovery and emissions-related power systems for maritime and industrial customers. Overlaps with H-DEUX's maritime emissions-capture theme and shares the profile of an early-stage cleantech targeting shipping operators.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights5 records
Customer concentration
H-DEUX LTD social profiles
Digital presenceH-DEUX LTD financial estimates
Financial estimateRevenue estimate
Valuation estimate
H-DEUX LTD leadership team
Management profileNumber of profiles
Profiles1 record
H-DEUX LTD funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
H-DEUX LTD M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about H-DEUX LTD
What does H-DEUX LTD do?
H-DEUX LTD designs and supplies clean-tech engineering systems for emission control and sustainable cooling across transportation sectors. Its portfolio comprises three proprietary products: PureMarine (multi-pollutant emission capture for maritime vessels), SustainCool (ammonia-based adsorption passive cooling for EVs, data centers, and off-grid storage), and FlexiCapture (compact, retrofit-friendly emissions capture for rail locomotives). The company sells these systems directly to enterprise customers in maritime, rail, and electric vehicle industries.
Is H-DEUX LTD a public or private company?
H-DEUX LTD is a private company. It is classified as unknown and is currently operating.
When was H-DEUX LTD founded?
H-DEUX LTD was founded in 2023. It employs 1 to 10 people.
Where is H-DEUX LTD based?
H-DEUX LTD is headquartered in London, United Kingdom, in the Europe region.
How does H-DEUX LTD make money?
One revenue line is on record: emissions Control Systems Sales.
Who are H-DEUX LTD's main competitors?
Broad incumbents on record are Wärtsilä, Hanon Systems, Alfa Laval, Gentherm, Wabtec, Mahle and Modine Manufacturing. Emerging players are Norsepower, Captura and Climeon.
Does H-DEUX LTD have an API?
No public API is recorded for H-DEUX LTD.
What industry is H-DEUX LTD in?
H-DEUX LTD's product category is Clean Technology & Environmental Engineering Systems. Its primary akta.pro industry code is IMAHAKAB, HVAC Equipment (Heating, Cooling & Air Handling), with a secondary code of IMAJAIAE, Marine HVAC, Refrigeration & Ventilation Systems. Its NAICS code is 334512 and its SIC code is 3585.