DiversiTech Corporation is North America’s largest manufacturer of equipment pads and a renowned manufacturer and supplier of components and related products for multiple industries, including: HVACR, electrical, consumer hardware retail, electrical utility, automotive retail and pool and spa channel.

DNV GL is a global quality assurance, software solutions and risk management company. They provide classification, technical assurance, software and independent expert advisory services to the maritime, oil & gas, power and renewables industries. They also provide certification, supply chain and data management services to customers across a wide range of industries.

Donaldson Company helps solve some of the world's most complex filtration and contamination control challenges, and is one of the largest global providers of unique filtration technologies and high-quality filters and parts. Their filtration technologies and products are used every day, in a variety of industries and environments, including aerospace, agriculture, construction, manufacturing, mining, power generation, transportation, etc.

Doucette Industries is a globally renowned supplier of heat exchangers, vibration absorbers and OEM parts to the HVAC/R industry since 1975. Their extensive products include suction line heat exchangers, heat recovery desuperheaters, coaxial coils, brazed plates, tube-in-tube condensers, shell and tube heat exchangers, vibration absorbers, pool water heat exchangers.

Safe-T-Flush by Drain Shield is the new standard for condensate drain management, preventing leaks and clogs by ensuring a natural flow of condensation out of the drain line. The Safe-T-Flush system eliminates repetitive service calls, improve air quality with the unit, and prevent extensive and costly property damage.

Duct & Vent Cleaning of America, Inc. was founded in April of 1989 by Ron Eckman. As early as February of 1990, Duct & Vent Cleaning of America, Inc. joined NADCA, the HVAC Inspection, Maintenance and Restoration Association. In fact, they were the first company to be allowed membership that used portable hepa vacuums in the cleaning process.

Located in St. Louis, Missori, U.S.A., Ductformer Inc. is a manufacturer of machinery for the Duct Fabrication Industry. They manufacture sheet metal and duct fabrication machinery including rollformers for duct flanges, slip and drive cleats, Pittsburgh, and snaplock seams.

DuctSox is a manufacturer of textile air dispersion products for open and finished ceiling architecture, critical environments, and under floor applications. DuctSox Products are a cost effective, aesthetically attractive alternative to metal ductwork and diffusers. DuctSox Systems are 100% custom made, starting from the engineering design to the manufactured product.

Duracool Airconditioning intends to serve and achieve goals with technological superiority and provide top performance, application versatility and reliability. Their corporate values are the foundation upon which the company is built. These values are timeless and transcend all service lines, business and household environments.

Dura Products, Inc is a state-of-the art Indiana based manufacturer of metering, pumping and dispensing systems for the DEF, AG, and turf Chemical industries. Founded by owners with decades of knowledge in farming and the chemical sales industry, Dura Products Inc goes beyond excellent design to incorporate innovative, versatile and durable transfer pump solutions with the end consumer always in mind.

E Flow Technologies is a global company which produces the energy efficient fan-packs for a vast variety of AC & EC motor solutions and a quick return on investment for HVAC, refrigeration, ventilation and engine cooling industries.

The E.ON Group is one of Europe's largest operators of energy networks and energy infrastructure and a provider of innovative customer solutions for 50 million customers. Thus, they are decisively driving forward the energy transition in Europe and are committed to sustainability, climate protection, and the future of the planet.

Eagle Mechanical, Inc. is a HVAC, plumbing, process and piping mechanical contractor with 30+ years’ experience. They help customers to purchase, install, maintain or replace any heating, air conditioning, refrigeration and plumbing systems. They specialize in industrial and commercial facilities, like hospitals, office buildings, schools, and government facilities.

Earth City Distributing is a renowned distributor of HVAC solutions and equipment with headquarters located in Chesterfield, Missouri, USA.

Based in Warminster, United Kingdom, Ecobubl design and supply renewable energy solutions. They offer product training courses for air source heat pumps, electric & heat batteries, and also mixergy hot water tank. They also offer solar PV and electric battery storage Installations, throughout Wiltshire, Dorset, Somerset and parts of Hampshire, in the UK.

EcoFlow Tech is a revolutionary mobile power company that is reinventing the way the world accesses energy. As makers of industry-first, smart and powerful mobile power products, EcoFlow’s mission is to harness new technologies to foster inclusion and help raise standards of living in areas of the world where power shortages stunt economic growth and development.

EcoVadis is the world's most trusted provider of business sustainability ratings. Global supply chains, financial institutions, and public organizations rely on EcoVadis to monitor and improve the sustainability performance of their business and trading partners.

EDEN’s mission is to empower contractors with innovative technology, helping them to grow their businesses and provide exceptional customer experiences. Founded in 2021, the Seattle-based startup provides a digital sales enablement tool to help HVAC contractors provide quick and accurate instant quotes for HVAC systems. By leveraging technology to provide prices and detailed breakdowns of eligible incentives and expected utility savings online.

Since 1975, EDOS Manufacturers' Reps Inc. has represented only the finest manufacturers and marketing products available to the New York and New England plumbing and heating industry.

The EEBUS Initiative e.V. is an organization with over 60 members who are the stakeholders in all fields of connected home, electrical mobility, energy and smart appliances. Members of EEBUS collaborate in various working groups to establish a standardized and common language for the interoperability of connected devices.

Elektrotermex was founded in 1988. From the beginning of its existence to the present day, it has been 100% a company with Polish capital. The market activity was focused on heating services. They were the first in the country to start the production of compact heat distribution centers. They were very well received, as evidenced by medals and diplomas at trade fairs and exhibitions.

From energy-efficient Copeland Scroll compressors to highly precise Sensi thermostats to cutting-edge electronics and heating technology, Emerson residential and commercial solutions set the industry standards for superior levels of indoor comfort.

EMS Ice, Inc. provides a total cleaning solution for customers while meeting or exceeding quality standards at a competitive price. EMS Ice was founded and incorporated in 1996; providing an environmentally engineered solution for difficult cleaning, coatings removal, and surface preparation problems.

EnSol is an expert in providing complete solutions for Heating, Ventilation, and Air-Conditioning. Starting from assistance in Design to Material Supply & Installation, Commissioning, and Handing Over the system, the company is capable of handling every stage with utmost efficiency and dedication.

Entity Refrigeration is a globally renowned company in the design and installation of large walk-in coolers and freezers. They are committed to delivering high-quality work and ensuring client satisfaction. They have over 45 years of combined expertise in the HVAC/R sector. They are professionals in residential and commercial HVAC, low and ultra-low-temperature refrigeration, commercial refrigeration, and wine cellar maintenance.

ESCO Institute provides HVACR educators and trainers with certifications, assessments, software, text books, reference guides, curriculum, training packages, and sustainable services.

ESP Company was founded in 1974 by Thomas J. Finnegan, a manufacturer's rep in the Midwest to provide specialty products to the air conditioning, heating, and refrigeration industry.

Esser Plumbing & Heating (Aire Serv of Fargo - Esser Plumbing) perform commercial and residential installations and services throughout the Lakes Area in Minnesota and the Fargo-Moorhead area. They provide heating installation and repairs that includes furnaces, geothermal and ventilation, residential plumbing, drain and sewer services, such as cabin winterization, bathrooms, kitchens, water heaters, water softeners, pipe repair and more.

A healthy environment and planet are top priority for everyone. That's why eSunshine Cleaning uses organic, natural, and non-toxic cleaning products to clean spaces. They currently clean for over 60 customers on a regular basis and they're growing! The company takes pride in their work, and aims to deliver the best cleaning experience every time they clean any space.

Founded in 1993, Eurovent Certita Certification is recognized as a world class organization in the field of third party product performance certification for Heat Ventilation Air Conditioning and Refrigeration products. They include HVAC-R consultants, Energy Engineering offices, Architects and product end-users, the most comprehensive data base of certified products, covering up to 40 product families.