Since 2008, GPS has worked to deliver the clean air benefits of ionization without the negative effects of ozone-producing technologies.

Gray & Adams is the UK pioneer in the manufacture of specialist temperature-controlled and bespoke vehicles. Founded in 1957, they are a long-established, family-owned business with 750 employees, based out of a head office and main production facility in Fraserburgh, Aberdeenshire and have operational sites across the UK in Doncaster, Dunfermline and Newtownabbey.

Graybeal’s All Service HVAC, was founded in 1993 by Dave and Debbie Graybeal. Combining Dave’s technical expertise and certifications, Debbie’s BA in business, and their desire to provide quality service, Graybeal’s All Service HVAC was born.

Gripple provides fast and versatile suspension solutions for Ductwork and other suspended services, as well as seismic bracing for nonstructural equipment and components. SMACNA verified.

Gustafson is a spiral duct and fitting manufacturer that markets to wholesalers and dealers. The company offers conventional air duct systems, as well as self-sealing and high velocity HVAC duct systems.

H. A. Phillips & Co. is a single source manufacturer and supplier of modulating control solutions for industrial refrigeration systems. They provide ammonia refrigeration valves, control systems, custom ASME pressure vessels, air purgers, Anhydrators, packaged refrigeration controls, regulating and solenoid valves, Level Eye sightglasses, refrigeration flanges.

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.

H.D. Grant Co., Inc. represents many of the best manufacturing lines in the HVAC industry. They supply and distribute exhaust fans, fire dampers, radiation dampers, single duct VAV boxes, fan powered VAV boxes with electric heat, Vibration Isolation, and many other products for the HVAC industry.

Hagler Heating & Cooling is a full-service HVAC company in Ozark, AL. They are dedicated to supplying the best possible solution for home or business. They have earned a reputation among our customers for performing appropriately the very first time.

Hajoca has a robust history of helping to shape advances in plumbing. Hajoca provides Plumbing Wholesaler, Industrial Supplies, Swimming pool supplies, pipes, valves, fittings, Kitchen and Bath, and HVAC Materials and Supplies.

Halton Group is a family-owned, global technology pioneer in indoor air solutions for demanding spaces. They enable safe, comfortable, and productive indoor environments that are energy-efficient and comply with sustainable principles.

Harbor Air Conditioning is a pioneer air conditioning company. Most of the energy used in the home goes out in cooling and heating, act smart to have the Air conditioning fixed which can have a big effect on their utility bills.

Hardcast provides high-performance solutions for the Heating Ventilation and Air Conditioning (HVAC) industry, manufacturing rolled duct sealants, mastics, adhesives, coatings and hardware as well as other accessories.

Harmon Heating and Cooling Inc is an HVAC Company that provides remarkable HVAC services to both residential and commercial customers in Omaha and the surrounding counties.

Harris Air Heating and Air Conditioning is an HVAC company in Benton, AR. They specialize in repairing and installing all makes and models of heating and air conditioning units at affordable rates.

Hart & Cooley has been a trusted brands for HVAC supplies in the industry. Their products are stocked across North America to provide the customer with a winning, comprehensive solution for business - on time. Their brands include AmeriFlow, AmeriVent, AMPCO, Hart & Cooley, Lima, Milcor, PortalsPlus, Roof Products & Systems (RPS) and Ward Industries.

Hastings HVAC, Inc. is a pioneer in commercial and industrial heating, ventilating and air-conditioning systems. They offer a company-staffed field solution to ensure Hastings' items are properly built, properly set up and correctly serviced.

Hatcher Heating & Air Inc is a locally owned and operated HVAC company in Pensacola, FL. They pride themselves on providing the best possible service to all their customers.

HaVACo Technologies Inc. is focused on revolutionizing the HVAC air distribution industry with product design, functionality and performance offering time saving technology and simpler maintenance.

Hayes Mechanical is a one stop, full service mechanical contractor specializing in both Commercial, Industrial, and Power-Generation related work.

Head’s Heating & Air Conditioning is an HVAC company that offers complete heating and air conditioning services in the Mobile and Baldwin county area. Their company was established in the year 1979.

Heating and air conditioning equipment for residential and commercial applications, 1/2 to 25 tons, under the Comfort-Aire and Century brand names.

Heat Exchangers WA was established in 2003 with a vision to become the very best plate heat exchanger service center in Australia, having accomplished this we are now expanding our supply and service range to include a wider variety of heat transfer equipment.

HEAT PIPE TECHNOLOGY, INC. (HPT) is a provider of energy recovery and dehumidification systems for commercial applications around the globe. Employing the very latest in passive heat transfer technology, HPT designs and supplies the core systems to the commercial air handling equipment manufacturers.

Heatco manufactures gas-fired stainless steel duct heaters. Their mission is to design, build, and deploy America’s highest quality gas heaters while providing industry-leading customer satisfaction.

Heatex is a cleantech company that optimizes and develops energy-saving thermodynamic products and solutions that contribute to a sustainable future.

Established in 1968, Heatmiser has become one of the UK’s smart room thermostat manufacturers. Heatmiser has established partnerships with heating installers and heating equipment manufactures across the UK and has the ability to private label and custom design.

Heieck Supply is a plumbing wholesaler in the Sacramento, CA area. Whether it be a bathroom remodel, building a high rise, or swapping out water heaters Heieck Supply is the one-stop-shop for all the plumbing needs.

HH Technologies® is widely recognized as a supplier of high-performance, automated door systems, portable evaporative cooling systems and contract manufacturing services to other OEM companies. Since 1978, their on-site engineering and manufacturing operations in Bremen, Alabama has produced the most respected brands within the markets that they serve.

Hilson Moran is an international environmental engineering consultancy for the built environment. They provide building services, fire engineering, smart buildings, facilities management, building automation systems and much more.