Dallas Plumbing Company is a family-owned commercial and residential HVAC and plumbing company based in Dallas, Texas since 1903. They have sold, installed, maintained and repaired thousands of air conditioning systems across the Dallas area.

David Services Inc. provides heating, cooling, heat pump, furnace & air conditioning installation, repair & maintenance in Lancaster and the surrounding areas.

De Rigo Refrigeration has been working in commercial refrigeration for over 50 years, designing and producing exclusively in Italy. They offer complete range of refrigeration units, cold rooms and cells that allow them to provide the Retail sector turnkey solutions, with a highly specialized assistance service in the pre and post sales phase. Innovative solutions, tailored, and with maximum flexibility in delivery times.

Degree Day is an ISO 9001:2015 certified Indore-based Air Conditioning firm, which provides one-stop HVAC system solutions and consider themselves to be one of the major organizations for Design and Project Execution of Ventilation, Refrigeration and Air Conditioning applications.

When it comes to cooling tower manufacturers-- in USA --look no further than Delta Cooling Towers. As a corporation, we pride ourselves on keeping a finger on the pulse of the newest innovations in industrial cooling towers that offer our customers safety, efficiency, and durability.

Deltrian (Deltrian International) is specialized in the filtration field for over 50 years. Thanks to its experience, the company is an expert in the air-quality management in various fields such as food-processing, automotive, microelectronic and pharmaceutical industries, and also in hospitals.

Dennis’ Heating and Air Conditioning, Inc provides HVAC Installation, Retrofits, Service and Maintenance, as well as a full service sheet Metal Fabrication Shop. They are capable of fabricating almost anything, if customers can draw it, they can build it. The company is known for their knowledge, reliability, and incredible customer service.

DenPro HVAC believes in exceptional customer service and setting the bar high in the industry. They are a locally owned and operated HVAC company serving south central Pennsylvania. From standard preventative maintenance to full replacements, both residential and commercial, they cover all HVAC needs.

Desert Aire provides refrigeration-based dehumidifiers and offer their customers indoor air quality (IAQ) solutions that help people live, work and play in healthy and productive environments. As recognized leaders in dehumidification and dedicated outdoor air systems, they apply deep engineering expertise, advanced technology and focused service & support to meet their design goals with solutions that are accurate, durable and efficient.

Dettson – A member of the Ouellet group. Mission. Provide sustainable solutions to the HVAC (heating, ventilation, air conditioning) industry.

Devard's Air Conditioning & Heating, Plumbing and Electrical offers affordable, reliable, energy-efficient, commercial and residential plumbing, air conditioning, heating and air conditioning units for the Dallas - Ft. Worth area with their '100% customer satisfaction policy', which is their company motto and what has led to their success.

With more than 30 years experience in humidification, Devatec offers a complete range of humidifiers. Recognized for their reliability and high technology, Devatec's products are the perfect solution for your humidity's problems.

DFW IT Partner is a Reliable IT Partner providing one-stop IT solutions in Dallas, Austin, Fortworth, Houston, and San Antonio, Texas, USA. They provide businesses with the expertise, resources, and support needed to drive innovation and stay ahead of the competition in today’s fast-paced digital landscape. By working with them, businesses can achieve their technology innovation goals more efficiently and effectively.

Founded in 1988 with offices in Kansas City, Austin and Denver, Dialectic is a non-traditional mechanical, electrical and plumbing engineering firm that brings buildings to life. With deep expertise in a range of verticals – including distribution, cannabis, multifamily, senior living and retail/restaurants – they know that true success comes with partnering as an extension of the team.

Dimplex offers a variety of both indoor and outdoor electric heating solutions that are attractive in design, as well as powerful in performance. The heaters range from fan-forced to infrared and are suited to different spaces requirements. Dimplex electric fireplaces lead the industry with flame effect technology and realistic media bed accessories.

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.

Dogu Air Conditioning (DOGU Iklimlendirme) started manufacturing ventilation and air conditioning equipment in Izmir, Turkey, back in 1999. It also manufactures Air Handling Units (AHUs), Rooftop Packaged Air Conditioning Units (Rooftop), Heat Recovery Devices, Air Distribution Equipment, and Kitchen Ventilation Devices according to European norms.

Domus Ventilation is an innovator when it comes to supplying the Merchant and Electrical Wholesale industry with value-added products, such as unique 'house packs'​ with pre-determined duct kits, extract fans, and a choice of terminals. Our dedicated design team also offers free-of-charge CAD and Revit designs to illustrate custom ventilation systems that meet the latest building regulations and ensure optimum performance.

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.

Done-Rite Plumbing & Rooter is the premier plumbing company in Orange, California, USA. They are a full-service plumbing contractor offering everything from water heater installation & repair, drain cleaning sewer line repair & installation, and general plumbing services. They service the entire Orange County area and can be out to any property in the area same-day for plumbing services.

DT Air Conditioning & Heating is Texas' renowned expert heating and cooling company. They offer furnace and air conditioning services in and around Plano, Texas, USA.

Duct Care Inc. provide is providing Professional Duct Cleaning Service since 2008. They also provide Furnace Cleaning, AC Coils Cleaning, Dryer Vent Cleaning and Central Vacuum Cleaning services. Their Unique Duct Cleaning process allow them to meet or exceed NADCA Duct Cleaning Procedure guide lines. From using pressure guns to different snake agitating whips and tools, they aim to not only get the job done, but get the job done right.

For over 30 years, Duct Doctor USA has been providing quality air duct cleaning for both residential and commercial customers. Duct Doctor was founded by a board-certified allergist in 1985 with a mission to improve the air quality of homes and workplaces.

DUCTZ has been providing industry-leading air duct cleaning and HVAC restoration services for residential and commercial properties alike.

Durkee® is a multi-national high-tech enterprise with a focus on offering solutions of high quality elastomeric thermal insulation, customized fabric air ducting and A/C system integration in the HVAC/R industry over the past 25 years.

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.

Compressed air is one of the most expensive forms of energy and yet its consumption represents an unknown quantity in many industrial companies. Use of flow meters for compressed air measurement can help to significantly reduce energy costs and forms an important basis for investment decisions.

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.

With over 20 years’ experience, EasyAir has an in-depth knowledge of saving their clients' energy by designing and installing heat recover systems. They also provide unique, site specific commercial kitchen heat & smoke extract, fume extract, dust extract, paint & varnish fume extract as well as bespoke turnkey air conditioning systems.

Easyflex is the leader of all things flexible. We’re a global leading manufacturer and distributor of flexible, corrugated stainless steel products. Through technological innovation, attention-to-detail, and stringent quality control, we manufacture and deliver superior products to customers worldwide.