Joule

Name

Joule

Legal name

Joule Hot Water Systems UK Ltd

Website

https://jouleuk.co.uk

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

101–250 employees

Ownership category

akta.pro rank

Product category

Renewable Heating Equipment Manufacturing

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), Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Pumps & Pumping Equipment (3561)

akta.pro primary industry

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

akta.pro secondary industries

Heat Pump & Smart HVAC Controller Integration (HSAOANAD), Heat Pump Repair & Maintenance (HSAOAHAD), Expansion Tank, Circulator Pump & Zone Valve Service (HSAOACAG), Tank Water Heater Installation & Replacement (HSAOACAA), Tankless Water Heater Installation & Service (HSAOACAB), Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Heat pump systems
• Hot water cylinders
• Underfloor heating
• Renewable heating solutions
• Ventilation systems

Headquarters

HQ city

Pontefract

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Pump and Cylinder Hardware Sales: Revenue primarily from selling physical heating products including air source heat pumps, exhaust air heat pumps, unvented cylinders, underfloor heating systems, radiators, and buffer tanks. Products sold as complete packages or individual units through installers and direct channels.
2. Design Services: Heating and plumbing design services provided through dedicated in-house design team using industry-approved engineering software including AutoCAD and BIM. Design packages provided for new-build domestic market from self-build to large house builders.
3. Installer Training Services: Joule Academy provides free digital training hub for technicians and contractors on heat pump installation, servicing, and maintenance. Completion opens eligibility for G1 accreditation for Joule heat pumps.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Joule UK manufactures and supplies renewable heating equipment for residential and new-build properties across the UK and Ireland, including Samsung air source heat pump packages (5-16kW), exhaust air heat pumps, the BEN all-in-one indoor heat pump, unvented copper and stainless cylinders (Cyclone, Zenith PrePlumb/Lite/Zero), InvaHeat underfloor heating, Riva aluminium radiators, InvaVent MEV/MVHR ventilation, and stainless/mild steel buffer tanks. The company complements its hardware with in-house heating and plumbing design services, the Joule Academy installer training programme, and a network of MCS-approved installers.

Differentiator

Problem solved

Functional benefit

Brands

• InvaHeat: Underfloor heating brand offering efficient heating solutions for various building types.
• Kodiak
• Zenith
• Cyclone
• Riva
• InvaVent
• ModulAir
• BEN

Products and services

• Samsung Air Source Heat Pump Packages Complete air source heat pump package solutions combining Samsung monobloc ASHP units with Joule pre-plumbed cylinders (Kodiak), available in 5kW, 8kW, 12kW and 16kW capacities with 150L-300L cylinders and 3- or 4-zone configurations. Delivers flow temperatures up to 65°C (Gen 6) and 75°C (Gen 7/HT Quiet), and operates at outdoor temperatures down to -20°C. Sold to installers and house builders for residential heating and hot water.
• ModulAir Exhaust Air Heat Pump Exhaust air heat pump for indoor air heat recovery, used in residential properties where exhaust air heat can be harvested to provide space heating and domestic hot water. Sold through installers for energy-efficient retrofits and new builds.
• BEN All-in-One Indoor Heat Pump All-in-one indoor heat pump integrating heating, ventilation and domestic hot water in a single indoor unit. Uses Joule's patented internal air-control module with integrated dampers to automatically balance extract and outdoor airflow while meeting heating demand. Designed for apartments and multi-unit developments where no outdoor unit is possible. Targets specifiers and developers in the apartment and multi-unit segment.
• Zenith Unvented Cylinder Range (PrePlumb, Lite, Zero) Range of pre-plumbed and unplumbed unvented hot water cylinders in slimline, standard and max configurations from 150L/30L to 300L/70L. Zenith PrePlumb is a fully commissioned pre-plumbed high-gain cylinder for Samsung ASHP, Zenith Lite is pre-plumbed and universally compatible with any domestic heat pump, and Zenith Zero is unplumbed with integrated buffer vessel. Sold to installers for residential heat pump installations.
• Cyclone Unvented Cylinders Unvented hot water cylinder range available in Indirect and Direct versions from 120L to 300L, qualifying for next-day UK delivery. Manufactured at the Castleford facility. Sold to installers and direct customers for residential hot water storage.
• InvaHeat Underfloor Heating Systems InvaHeat brand of underfloor heating systems designed for low-temperature operation with heat pumps, providing efficient heating distribution for various building types. Sold to installers and house builders for residential and new-build projects.
• Riva Aluminium Radiators Aluminium radiator range designed for low-temperature heat pump systems, with claimed 30% higher output than steel radiators and 38% lower water content. Sold to installers and house builders for residential heat pump installations where high thermal emission and low water content are required.
• InvaVent Ventilation Systems Centralised mechanical extract ventilation (MEV) and mechanical ventilation with heat recovery (MVHR) systems for residential and multi-unit developments. Sold through installers and house builders for properties requiring compliant mechanical ventilation, often paired with heat pump installations.
• Stainless and Mild Steel Buffer Tanks Range of stainless steel (up to 1,000 litres) and mild steel (up to 2,000 litres) buffer tanks with various coil configurations including pumped high temperature, heat pump, gravity and solar coils. Sold through installers and commercial heating contractors for buffering heat pump and mixed heating circuits.
• Heating and Plumbing Design Services In-house heating and plumbing design packages using industry-approved engineering software including AutoCAD and BIM. Provided to the new-build domestic market across the UK and Ireland, from self-build projects up to large sites for major house builders, covering all heating system types including solar and heat pumps. Sold to house builders, developers and self-build clients.

Quantifiable outcome

• Samsung ASHP delivers water temperatures up to 65°C for Gen 6, and 75°C for Gen 7 & HT Quiet
• +3 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• SamsungcoreTechnology or Integration · 1 January 2012Joule partnered with Samsung as a leading manufacturer to offer complete air source heat pump solutions. Samsung monobloc air source heat pumps are combined with Joule's expertly engineered pre-plumbed cylinders to create complete ready-to-install package solutions. Samsung systems are available in capacities from 5KW to 16KW. The partnership began in 2012 when Joule entered the air source heat pump market.

Scale indicators3 records

Recent moves12 records

Expansion highlights5 records

Broad incumbents

• Viessmann UK: Established German heating manufacturer offering Vitocal air source heat pumps and full-system heating solutions; competes with Joule for UK house-builder and installer accounts with a broader portfolio across boilers, heat pumps and renewables.

Emerging players

• Kensa Heat Pumps: UK specialist in ground source heat pumps with a strong installer-partner network; adjacent to Joule as an alternative renewable-heat technology competing for the same government-grant-funded demand and retrofit opportunities.

Direct peers

• Daikin UK: UK arm of the global HVAC leader, selling air source heat pumps, underfloor heating and air conditioning directly into the same residential and house-builder channel as Joule, and competing head-to-head for installer specifications and Boiler Upgrade Scheme-funded projects.
• Mitsubishi Electric (UK): One of the largest air source heat pump suppliers in the UK with Ecodan ranges, established MCS installer network and parallel support/training programmes that compete directly with Joule's Samsung-based package approach for new-build and retrofit heat-pump demand.
• Vaillant (UK): UK boiler and heat pump manufacturer with aroTHERM air source heat pumps and a strong installer network; competes with Joule on integrated heating system packages for residential and house-builder customers in the same UK/Ireland geographies.
• Bosch Thermotechnology (Worcester): Worcester Bosch sells gas boilers and the Greentherm air source heat pump range with a deeply established UK installer base, going head-to-head with Joule on package solutions and installer training/loyalty programmes for the residential heating market.
• NIBE Energy Systems UK: Swedish heat pump manufacturer with a UK subsidiary selling air source and exhaust air heat pumps plus cylinders; competes directly with Joule on high-temperature ASHP packages and on integrated heat-pump-plus-cylinder system propositions for new-build housing.
• Ideal Heating: UK-established boiler and heat pump manufacturer with the Logic Air ASHP and a large domestic installer network; competes directly with Joule for residential and small commercial heating package business across the UK.
• Baxi: Major UK boiler brand now offering air source heat pumps under the Baxi brand; competes with Joule on similar heating system packages, installer training and support infrastructure for the UK residential heating market.
• Grant UK: UK and Ireland-based heating manufacturer with the Aerona air source heat pump range plus oil-fired boiler heritage; competes directly with Joule on package heat-pump-plus-cylinder offerings in the UK and Irish new-build and replacement markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/jouleuk
• LinkedInlinkedin.com/company/joule-hot-water-systems-uk-ltd
• Instagraminstagram.com/joule_uk_heatingsystems
• Xx.com/JouleUK

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 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 Joule