Rinnai UK and Europe

What Rinnai UK and Europe does

Rinnai UK and Europe is a UK/EU branch of Rinnai Corporation (Japan), operating from Runcorn, United Kingdom and handling sales, technical support, and marketing for the Rinnai brand across the UK and selected European markets. Founded in 2003 with approximately 25 employees, the entity specialises in commercial and multi-point water heating systems, low GWP heat pumps, hydrogen-ready combustion technology, and hybrid heat pump / solar thermal solutions. The company is structured as a sales-led organisation combining direct field sales, a dedicated e-commerce shop (Rinnai Shop), a contractor/installer network, and European distribution via Rinnai Europe for cross-border commercial projects.

The product portfolio is divided across three strategic pillars: H1 (hydrogen-blend and bio-LPG ready water heaters, including the world's first 100% hydrogen combustion continuous flow heater), H2 (hybrid systems combining heat pumps, solar thermal, and conventional heating), and H3 (low GWP heat pumps using R290, R32, and R454B refrigerants across a 6kW–410kW capacity range). The customer base is diversified across commercial verticals including NHS facilities, hotels, supermarkets, military installations, academic buildings, sports clubs, food preparation, and caravan/camping parks, alongside domestic residential customers. Marketing is driven through CIBSE-approved CPD training, the Rinnai Knowledge Hub, webinars, and membership in industry bodies such as HHIC, Liquid Gas UK, APHC, North West Hydrogen Alliance, and ICOM.

Revenue is generated primarily through hardware sales of water heaters, heat pumps, hybrid systems, and electric storage solutions, supplemented by training/CPD services and technical consultation. Pricing is not publicly disclosed and is handled through direct inquiry, request callback, and site consultation channels. The company does not have AI/ML capabilities embedded in its product set beyond IoT remote monitoring; the technology moat is anchored in hydrogen-combustion and low GWP refrigerant engineering, not software.

Name

Rinnai UK and Europe

Legal name

Rinnai UK

Website

https://rinnaiuk.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Rinnai UK and Europe is a UK branch of Rinnai Corporation (Japan) that distributes and supports commercial and domestic water heaters, low GWP heat pumps, hybrid heating systems, and hydrogen-ready appliances for commercial facilities and residential customers across the UK and Europe.

Ownership category

akta.pro rank

Product category

Commercial Heating and Hot Water Equipment

NAICS

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), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Major Household Appliance Manufacturing (33522)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430), Household Appliances (3630)

akta.pro primary industry

Heat Pumps (Air/Water/Ground Source) (IMAHAKAF)

akta.pro secondary industries

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Water Heating & Treatment Appliance Retail (Water Heaters, Water Softeners, Filtration Systems) (CRACACAF), Commercial Water Heater & Boiler Service (HSAOACAJ)

Keywords

• Commercial water heaters
• Heat pump systems
• Hybrid heating solutions
• Hydrogen ready boilers
• Low GWP heat pumps

Headquarters

HQ city

Not specified

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Water Heating Equipment Sales: Sale of commercial and domestic continuous flow gas water heaters, condensing water heaters, and tankless multipoint water heaters
2. Heat Pump Systems: Sale of commercial air source heat pumps including Low GWP R290, R32, and R454B models with capacities from 6kW to 410kW
3. Hybrid Solutions: Bundled hybrid hot water systems combining heat pumps, solar thermal, and traditional heating technologies
4. Training and CPD Services: CIBSE CPD training programs, appliance training, webinars, and educational content for industry professionals
5. Technical Consultation Services: Site consultation, product selection assistance, warranty services, and carbon cost comparison analysis

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Rinnai UK and Europe manufactures and sells commercial and domestic heating and hot water appliances, including continuous flow gas water heaters, condensing water heaters, low GWP air source heat pumps, hybrid heat pump systems, solar thermal solutions, and IoT control systems. The product range spans from 6kW to 410kW capacity, serving both B2B commercial markets (hotels, hospitals, NHS, military, supermarkets) and residential customers through hydrogen-ready and low carbon technologies.

Product overview

Rinnai UK and Europe offers a comprehensive portfolio of heating and hot water solutions organized across three main product categories: H1 (Hydrogen & Bio LPG ready products including condensing water heaters and hydrogen-ready boilers), H2 (Hybrid Solutions combining heat pumps, solar thermal, and traditional heating), and H3 (Low GWP heat pump technology). The product range spans commercial and industrial heat pumps (6kW-410kW capacity using R290 and R32 refrigerants), commercial condensing water heaters (N Series), domestic continuous flow gas water heaters (Infinity KCM Series, E Series, 11i, 17i models), hybrid hot water systems integrating solar thermal and heat pump technology, electric storage solutions, and IoT control systems. The portfolio emphasizes hydrogen-blend compatibility, low Global Warming Potential refrigerants, and hybrid energy solutions for decarbonization across residential, commercial, and industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• Rinnai Home: Home-focused heating and hot water solutions brand with dedicated website rinnaihome.co.uk
• Rinnai Tech Centre
• Rinnai Knowledge Hub

Products and services

• N Series Commercial Condensing Water Heaters Commercial condensing water heaters designed for high-efficiency hot water generation in commercial and industrial applications.
• Low GWP R290 Air Source Heat Pumps (6kW - 410kW range) Commercial and industrial air source heat pumps using R290 refrigerant with low Global Warming Potential, available in capacities from 6kW to 410kW for diverse commercial heating applications.
• R32 Air Source Heat Pump Range (HPI, HPIH, HPHP, HPMAX) Inverter-driven air source heat pumps using R32 refrigerant, offering capacities from 4kW to 115kW for commercial heating solutions, including monobloc and high-capacity industrial models.
• R454B Commercial and Industrial Heat Pumps Commercial and industrial heat pumps using R454B refrigerant for reduced environmental impact in commercial heating applications.
• Rinnai Infinity KCM Series Continuous Flow Water Heaters Tankless continuous flow gas water heaters for domestic and multi-point applications, providing endless hot water on demand for homes, apartments, and residential properties.
• E Series External Condensing Water Heaters External-mounted condensing water heaters suitable for outdoor installation, providing efficient hot water heating for residential and light commercial applications.
• Infinity 11i Hydrogen Blends Ready Water Heater (20%) 24kW continuous flow water heater compatible with up to 20% hydrogen blends, low NOx emissions, for internal installation in residential and light commercial settings.
• Infinity 17i Hydrogen Blends Ready Water Heater (20%) 35kW continuous flow water heater ready for 20% hydrogen blends, low NOx configuration for internal installation in larger residential and light commercial applications.
• Hybrid Hot Water Solutions - Solar Thermal Hybrid systems combining solar thermal technology with conventional heating for enhanced energy efficiency in commercial and residential applications.
• Hybrid Heating Systems Integrated hybrid heating systems combining multiple energy sources including heat pumps, solar thermal, and traditional heating for optimal efficiency and reduced carbon emissions.
• Turnkey Hot Water Solutions Complete packaged hot water solutions designed for quick installation and commissioning in commercial and industrial settings.
• Electric Water Heaters - Instantaneous Instantaneous electric water heaters providing on-demand hot water through electric heating elements for residential and small commercial applications.
• Unvented Water Heaters & Indirect Cylinders Unvented hot water cylinders and indirect heating cylinders for mains pressure hot water systems in residential and commercial buildings.
• Control and IoT Solutions Internet of Things control solutions for remote monitoring and management of Rinnai heating systems, enabling connected building management for commercial operators.
• Nexus Electrolytic Scale Protection Electrolytic scale protection system to prevent limescale buildup in commercial heating and hot water equipment, extending equipment life and efficiency.
• Technical Consultation and Site Assessment Services Virtual site consultation, product selection assistance, carbon cost comparison analysis, and bespoke site surveys for commercial and industrial heating projects.
• CIBSE CPD Training and Education Programs CIBSE-approved continuing professional development training programmes, appliance training, webinars, and educational content for building services engineers and industry professionals.

Quantifiable outcome

• 100% hydrogen combustion achieved for continuous flow hot water heaters
• +1 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered minor and core.

• World LPG AssociationminorOthersIndustry association membership supporting the LPG (Liquefied Petroleum Gas) industry globally. Rinnai participates as a manufacturer of LPG-compatible heating products including hydrogen blend ready and bio-LPG ready water heaters.
• Chartered Institution of Building Services Engineers (CIBSE)coreOthersProfessional body for building services engineers. Rinnai offers CIBSE-approved CPD training programmes and maintains active engagement with the engineering professional community.
• Heating and Hotwater Industry Council (HHIC)coreOthersUK industry body representing heating and hot water manufacturers. Rinnai participates as a member supporting industry standards and regulations development.
• Liquid Gas UKminorOthersTrade association for the UK liquefied petroleum gas industry. Rinnai holds membership as a manufacturer of LPG-compatible water heating products including bio-LPG and RDME ready equipment.
• Association of Plumbing & Heating Contractors (APHC)minorChannel Partner/ Reseller/ DistributorTrade body representing plumbing and heating contractors in the UK. Rinnai connects with registered installers through this network for product distribution and installation support.
• North West Hydrogen AllianceminorOthersRegional industry alliance promoting hydrogen economy development in North West England. Rinnai participates as a manufacturer of hydrogen-ready heating technology.
• Industrial and Commercial Heating Equipment Association (ICOM)minorOthersTrade association for manufacturers of industrial and commercial heating equipment. Rinnai maintains membership as a commercial heating solutions provider.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Worcester Bosch: UK market leader in domestic and commercial boilers and now expanding into heat pumps and hydrogen-ready heating. Directly comparable to Rinnai UK as both target commercial hot water, heating, and decarbonisation projects across similar customer segments.
• Baxi (BDR Thermea Group): UK commercial and domestic heating manufacturer under BDR Thermea, offering condensing boilers, heat pumps, and hybrid solutions. Competes with Rinnai UK for commercial building specifications and decarbonisation projects.
• Daikin UK: Global heat pump and HVAC leader with a strong UK commercial heat pump offering. A direct competitor in commercial air source heat pumps where Rinnai UK is pushing its R290 and R32 ranges.
• Stiebel Eltron UK: German-headquartered heat pump and hot water specialist with UK operations. Direct peer in heat pump technology, hot water cylinders, and renewable heating solutions for commercial and residential customers.
• Vaillant (UK): Major UK/EU boiler manufacturer with a growing heat pump portfolio and aroTHERM air source heat pumps. Competes with Rinnai UK across commercial heating, hot water, and low-carbon technology for installers and specifiers.
• Ideal Heating: UK-based boiler and heat pump manufacturer (part of Groupe Atlantic) targeting commercial and residential heating. Overlaps directly with Rinnai UK's condensing water heaters and emerging heat pump portfolio.
• Grant UK: UK manufacturer of oil-fired, gas, and renewable heating products including the Aerona heat pump range. Comparable to Rinnai UK in commercial heating, hot water, and decarbonisation technology offerings.
• Mitsubishi Electric (UK): UK supplier of air source heat pumps (Ecodan) and commercial heating/cooling systems. Competes with Rinnai UK across commercial heat pump capacity tiers and decarbonisation-led tenders.
• Viessmann: German manufacturer of boilers, heat pumps, and commercial heating systems with a UK presence. Overlaps with Rinnai UK in commercial condensing water heaters, hybrid systems, and decarbonisation-oriented heating technology.

Emerging players

• HTP (Heat Transfer Products): US-based manufacturer of high-efficiency commercial water heaters and boilers with growing international presence. Comparable emerging peer to Rinnai UK in commercial condensing water heating technology.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/rinnai-uk-europe

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Rinnai UK and Europe