Industrial and Commercial Heating Equipment Association (ICOM) is the UK's trade association representing the industrial and commercial heating equipment industry sector. Together with the members, ICOM represents the industry's interests at UK Government and European levels. ICOM is a division of the Energy and Utilities Alliance (EUA).

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.

J Williams Plumbing & Heating offer Plumbing, Heating and Energy Efficiency services and installations in both commercial and residential locations. From boiler repairs to gas safe installations, their services are both versatile and proven

James Hargreaves Plumbing Supplies has a specialist Underfloor Heating team that can help with all the Underfloor Heating needs. From design and specification, supply and delivery of quality products through to technical customer support.

JCH London is in a prime position to be able to deliver an effective solution. Established in 2006, the company has a strong track record for providing high-quality commercial boiler servicing in London. They provide commercial boiler installations, commercial boiler repairs, commercial gas servicing, commercial gas certification, building energy management systems, and much more.

Jet Environmental is a market-leading supplier of HVAC systems. We design, manufacture, install and maintain heating, ventilation and cooling systems in industrial, warehouse and commercial buildings.

JLA’s products and services help to keep thousands of patients, residents, and customers safe, clean, and warm. They provide commercial heating equipment, commercial air conditioning, commercial fire safety solutions, infection control solutions, and Servicing & Maintenance.

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.

Mace is a global expert in shaping the built environment. From development and consultancy to construction and operations, it connect expertise across the entire property lifecycle to help their clients, people, communities, and society achieve more than they believe is possible.

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.

Established in 1967, McAleer & Rushe are specialist design & build contractors delivering high-quality buildings across UK & Ireland. They are also Specialist Design & Build Contractors, Developers, Asset Managers, and Investors in multi-sector, mixed-use schemes.

Founded in 1990, Meraboiler has swiftly become a pioneering force in the online boiler installation sector. At the heart of Meraboiler are the visionaries who saw not just a business opportunity, but a chance to revolutionize the way homeowners approach one of their most crucial home appliances: their boiler. They believe in excellent service in emergencies and they have experienced Gas Safe registered engineers standing by for emergency calls.

Mikrofill is an innovative UK designer and manufacturer of commercial condensing boilers, hot water loading systems, dosing pots, pressurization equipment & the new Velocity booster set range. Customers can expect nothing but the best product, using the latest technology manufactured to the highest quality standards, resulting in the most reliable solution available.

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.

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.

Omdia unifies and harnesses the depth and breadth of expertise from Informa Tech’s legacy research brands: Ovum, IHS Markit Technology, Tractica and Heavy Reading. They offer unparalleled, world-class research and consultancy to navigate the now and create the future.

Onsite Contractors & Plumbing Ltd is the trusted local expert for plumbing, gas fitting, and general contracting services in London. Whether it's residential or commercial, our licensed team delivers reliable, high-quality solutions on time and on budget. From renovations to emergency repairs, they’re here when users need them most.

Pacifica Home Services Ltd. provide a wide range of HVAC and home improvement services in the region of Houghton Le Spring, in Sunderland, in the United Kingdom.

PCB Technical Solutions specialize in commercial and retail HVAC and Mechanical projects. From their full design and quotation services, through to the installation, project management and maintenance teams, they are able to provide the clients with their full specification.

PCE Instruments are the manufacturer and supplier of test devices, control systems, lab equipment, scales and balances. They have headquarters in Germany and sales offices around the world, including UK and US.

Pentair is a globally renowned provider of energy efficient water treatment systems, filtration products, pumps and water systems for residential, industrial, agriculture and commercial applications. They also offer a wide range of filters, valves, venting systems, heating and cooling solutions, industrial filtration and fire suppression systems.

Pinder Cooling & Heating was born to deliver unrivaled customer service combined with expert engineering knowledge and the highest quality products in air conditioning and cooling systems.

Plumhouse manufactures central heating chemicals, radiator controls, fire valves, pumps, central heating controls, thermostats, motorized valves and more.

Founded in 2012, ADS Plumbing & Heating SW Ltd has developed a reputation of completing gas, plumbing and electrical contracts to the highest standard and to the satisfaction of the client’s specification. We provide this service to the consumer, commercial, industrial and retail sectors.

Polypipe Building Products is the UK’s manufacturer of plastic piping systems and low-carbon heating solutions for the residential market. They design, develop, and manufacture over 20,000 product lines which are stocked in plumbers and builders’ merchants nationally.

PPVS are one of the renowned complete facilities and HVAC management service providers, established through two generations of family-run professional and responsible management. Their high standards of service across the UK are supported by their team of professionals and strategic local partners built through a decade of growth, staying close to the core family values of the organization.