HEI was created to bring fresh ideas to the table of market companies & clients who want the very best in Electrical & Mechanical Engineering.

Heinen & Hopman are experts in the field of designing, engineering and installing heating, ventilation, air conditioning (HVAC) and refrigeration systems on both land and sea.

HELEC has over 17 years of experience in designing & supplying space heating and hot water systems, utilizing a variety of technologies from traditional fossil fuel equipment through to advanced low carbon renewables.

HiiLIFE specializes in providing bespoke luxury technology & entertainment packages tailored for the construction, leisure, and residential sectors. The company serves as a comprehensive one-stop shop, offering a wide range of products and services, including HVAC systems, AV systems, home entertainment, lighting, premium appliances, white goods, climate solutions, and smart home technology.

Since its founding in 1910, Hitachi has responded to the expectations of society and its customers through technology and innovation. They provide a wide range of services, including HVAC systems, Information & Telecommunication Systems, Social Infrastructure & Industrial Systems, Electronic Systems & Equipment, Construction Machinery, High Functional Materials & Components, Automotive Systems, Smart Life & Ecofriendly Systems.

HVAC Doğalgaz, with its fair service approach and perfectionist approach to the work done, is at customers' side with all its possibilities to solve the problems encountered in the installations, especially heating, and bring them to a solution. In all the services they provide, especially regarding heating and installations required for buildings, they will always continue to offer the best to their customers as HVAC Natural Gas.

AC & Heating Equipment Rental are the air treatment specialists who understand the critical importance of air quality and building systems. Founded by three seasoned experts with a combined experience of over 40 years in rent air conditioner and heater rentals, they are passionate about providing exceptional solutions to meet unique client needs. They deliver their services 24/7 across the provinces of Ontario and Quebec in Canada.

HVAC Technical Solutions Ltd are a well established, Yorkshire based HVAC contractor serving the UK. They specialize in heating, air conditioning, ventilation and BMS systems. Their primary services include design, installation, maintenance and repair of mechanical and electrical building services. They also design, supply, install and maintain a wide range of Air Conditioning equipment to suit client specifications.

hybridGEOTABS EU is an active group of developers, engineers & academics with a common interest in optimizing coupled geothermal heat pumps (GEO-HP) and thermally activated building systems (TABS), alongside secondary heating & cooling systems. TABS use pipes, embedded in concrete floors, ceilings and walls, through which warm/cold water is pumped to heat/cool a building’s thermal mass.

IFC Certification Ltd is a UKAS accredited and internationally recognized provider of high quality customer focused independent third party certification. IFC Certification Ltd is also a Notified Certification Body for certificating products for CE Marking under the Construction Products Directive.

Institute of Domestic Heating & Environmental Engineers is the pre-eminent professional body for the approved heating engineer. The prime objective of the IDHEE is to raise the standards of domestic heating installations through education, to which end IDHEE Education has developed the Domestic Heating Design Course, and continues to develop further courses to enhance the knowledge of installers in general and its members in particular.

International Accreditation Forum (IAF) is the world association of Conformity Assessment Accreditation Bodies. Its primary function is to develop a single worldwide programme of conformity assessment, which reduces risk for business and its customers by assuring them that accredited certificates may be relied upon.

With more than 75 years of experience in organizing transport plans for the flows of major players in French transport, Jacky Perrenot has diversified into different areas of activity, such as Bulk, Containers, Logistics and Home delivery. The company continues to grow through new projects and acquisitions.

JDM Jingda is a designer and manufacturer of heat exchanger equipment, as well as an innovative supplier of stamping and metal forming press.

Klimat is a company dedicated to the installation of heating, air conditioning, cooling systems. They specialize in air conditioning products and continuously adapt to the new needs of the market. They offer maximum quality in their products and services. They also have a team of professionals with experience and talent.

Kospel company is a Poland based manufacturer of electric instantaneous water heaters, electric boilers, cylinders, solar products, steam generators and heat pumps.

Established in 2014, Leonari is a Mechanical & Electrical contractor working in London and the South East. They specialize in the commercial, residential, retail, data centers and educational sectors where our works include CAT-A, CAT-B installations as well as capital plant replacements.

Lumi United Technology Co., Ltd. (Aqara) specializes in the design and development of intelligent hardware and software solutions for smart home and corporate applications. Lumi is committed to applying the best industrial design, proprietary low energy consumption know-how, robust IoT software, cutting -dge AI technologies, and unyielding cost savings to provide the premier smart home experience.

Mace MEP Services are an international consultancy and construction business. They shape the cities and communities of the future by connecting clients, communities, suppliers and partners. They have a highly experienced mechanical, electrical and public health (MEP) team that drives efficiency and value on site by offering specialist contracting capability that drives value and efficiencies on one of the largest construction packages on site.

Marston Holdings offer integrated technology-enabled solutions from design and implementation to management and recovery, supporting the government, utilities and private sectors.

Matrix is the technology services company in Israel, with 10,820 employees worldwide. Since its foundation in 2001, Matrix has made more than 100 mergers and acquisitions and has executed some of the largest IT projects in Israel. The company specializes in the implementation and development of leading technologies ,software solutions and products, providing its customers with infrastructure and consulting services.

McQuay International delivers engineered, flexible solutions for commercial, industrial and institutional heating, ventilation, and air conditioning (HVAC) requirements with reliable products, knowledgeable applications expertise and responsive support.

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

MOS Mechanical offers a complete building, building maintenance and building renovation service. The company's building, maintenance and renovation division can always deliver the best quality, design, and value for money end product, be it domestic, commercial or just a simple revamp of a room.

Founded in 1977, Newark Cylinders is a family-run business that specializes in manufacturing bespoke hot water storage solutions, crafted from high-quality stainless steel and copper. They offer a diverse range of products, from small-scale marine calorifiers and domestic cylinders to larger industrial calorifiers, thermal stores, unvented cylinders, and buffer vessels. Each unit is fully customizable and designed to meet exact specifications.

NG Bailey is the UK’s independent engineering, rail, IT, and facilities services business with a deserved reputation for excellence. They offer integration from the outset of a project, from planning and design through the supply chain, to offsite manufacture, installation, and maintenance.

Nu-Mun Contracting is a Calgary based plumbing company formed by Doug Muncaster in 1989. They provide sheet metal installations for commercial, industrial and residential applications. The company also offers air conditioning, residential plumbing, commercial plumbing, and other HVAC solutions.

Oakes Energy Services Ltd (Oakes Energy) designs and installs both commercial and domestic renewable energy systems. In turn, dramatically reducing the cost of energy consumption and enabling the business or home to save thousands of pounds on their energy bills. Oakes Energy Services Limited was established in 2007 with the aim of offering customers an alternative, more sustainable approach to their energy needs.

Since 2000, Oakleaf Commercial Services has been providing high quality, professional, property maintenance and construction services. They also offer a wealth of services including responsive repairs, building construction, modernizations and adaptions, grounds maintenance, fleet services, a PVC-u manufacturing facility and a bespoke joinery workshop.

Ofgem is Britain’s independent energy regulator. Their role is to protect consumers now and in the future by working to deliver a greener, fairer energy system. They are a non-ministerial government department and an independent National Regulatory Authority.