Des Champs Technologies is a research and development driven company and the premier manufacturer and supplier of HVAC Air-Traps, and air to air heat exchangers. Their products are manufactured in the USA.

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.

Diversified Heat Transfer (DHT), is a pioneer engineering and manufacturing company of heat exchange equipment and systems for the residential, commercial, and industrial markets. With more than 80 years of experience, DHT can design, build, and manufacture innovative, technology-driven products that provide flexible, high-quality, and cost-effective solutions for a wide variety of applications.

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.

Dryaire Systems, Located in Germantown, Wisconsin specializes in Commercial, Residential and Grow Room Dehumidification Systems. DryAire Systems is a provider of dehumidifiers - industrial, commercial and residential applications - indoor swimming pools, ice rinks, process water treatment plant, agricultural dehumidification solutions and many more

Ducane is all about providing outstanding value in home heating and cooling. They provide residential heating and cooling products, packaged units, and split systems under 5-tons.

DunAn Sensing offers high-performance OEM pressure sensors, transducers, and transmitters with MEMS packaging technology compatible with harsh media.

Duratrac, Inc. provides a host of professionally engineered connectors designed to perform optimally with your residential and commercial gas and water heater applications. All Duratrac flex features durable stainless steel construction without tapering at the ends to help insure optimal flow, while our end fittings and valves are zinc iridate plated to prevent corrosion

Durex Industries is the designer and manufacturer of high quality electric industrial heaters, temperature sensors, temperature controls and process systems.

Eagle Disinfection is responsible for providing marketing, distribution and customized solutions tailored to the client’s needs and is equipped to facilitate installation and maintenance services on all Puradigm products. Puradigm is the world’s most validated purification technology for combating dangerous surface and air contaminants safely in populated environments 24/7.

Eagle Mountain is committed to the design and application of products and methods to reduce energy consumption and create a sustainable future for the earth while ensuring the comfort and satisfaction of customers.

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.

Edwards Coils Corp. is a renowned US-based innovator in the HVAC industry. Their products inventory includes Evaporator coils, condensors, heat exchangers, tube-in-tube, single and vented double wall, finned, in copper, cupronickel, titanium and steel tubing.

Thermostats, gas valves, ignition controls and ignitors, Filter Driers, Expansion Valves, and Solenoid Valves for heating, air conditioning, refrigeration and IAQ.

Enertech Global, LLC is a manufacturer and visionary in the geothermal heating and cooling industry. Enertech builds quality geothermal heat pumps and distributes solar PV products.

The Eubank Division of Airxcel, Inc. is a fast growing manufacturer of Wall Mount vertical packaged air conditioners and heat pumps. Eubank is a premium supplier of air conditioner units, heat pumps, dehumidifiers, and compressors

Residential heat pumps, air conditioners and furnaces.

For more than 50 years, EZ-FLO International manufactured products under the EZ-FLO & Eastman brand names. Over the years, the EZ-FLO Eastman product lines have expanded to include pans, outlet boxes, expansion tanks, and more.

Fantech is a designer and manufacturer of "Ventilation Solutions" that ensure better IAQ in the buildings. The products includes Fans & accessories, Fresh air appliances, Commercial ventilation.

Fervo is leading a wave of ingenuity and technological innovation that is expanding geothermal’s potential, vastly increasing geothermal energy production capabilities, and broadening project viability to previously inaccessible areas of the country.

Fujitsu General America is a provider of heating and cooling solutions for every application. Fujitsu's line of high-efficiency systems have been designed to provide advanced comfort solutions for residential and commercial applications.

Fulton Heating Solutions is a global manufacturer and innovator of high efficiency condensing boiler technologies. Its newest boiler line - the Endura+ commercial condensing boiler.

General Filters is a manufacturer of residential whole-house humidifiers, air cleaners, UV air purifiers, dehumidifiers, heat and energy ventilators and fuel oil filters.

GI Industries Inc. provides commercial tube cleaning machines for boilers, chillers, etc.; duct cleaning equipment, high pressure washers and industrial vacuums, and tube plugs, flexible shafts.

Goodman Global provides central air conditioning and heating equipment. IAQ and PTAC products.

Goodman Manufacturing provides its customers with reliable, high-quality, energy-efficient, and affordable indoor comfort HVAC products.

Goodway Technologies Corp is a manufacturer of Boiler/chiller/condenser tube cleaners, duct cleaners, vacuums, drain cleaners, hi-pressure washers, vapor-steam cleaners, surface sanitation, testing instruments, cooling tower cleaners, coil cleaners and mold remediation equipment.

Grass America is a quality-driven manufacturer of hinges, drawer slides, lifters, and drawer systems. The company's first-class movement systems keep America’s kitchens, baths, and office facilities operating at their best. Grass America's manufacturing facility in Kernersville, North Carolina, sells functional hardware and accessories throughout the US, Canada, and Mexico via 130 distributor locations.

Great American Coil is a full service manufacturer of evaporator, condenser, hot and chilled water, low-pressure steam and chilled beam coils. They make coils in flat or bent configurations and can help with performance or design.

H.C. Nye Company, Inc. is a Manufacturer’s Representative of Engineered, Applied, and Industrial HVAC Systems. They specialize in the assisting consulting engineers, construction managers, mechanical contractors and building owners in the application, selection, and sale of HVAC mechanical equipment.