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

Hayes Pump offers a variety of engineered pump systems to meet your process system needs for all markets and applications. Custom packaged skids, fuel oil sets, seal water systems, chemical feed systems, mobile pump packages, booster systems.

Haynes Mechanical Systems has provided technical facilities services for the commercial real estate market since 1968. They focus on working together with the customers to provide solutions to their heating, ventilation, and air conditioning (HVAC) needs.

HD Supply, a wholly owned subsidiary of The Home Depot, is a leading wholesale distribution company serving customers and their communities across the Multifamily, Institutional, Hospitality, Trades, Government Housing, Healthcare, Building Services, and Education industries through an expansive network of over 100 distribution centers across the U.S. & Canada.

HDR | Hurley Palmer Flatt Group is the UK’s leading independent multidisciplinary engineering consultancy, providing solutions for the built environment. HDR | Hurley Palmer Flatt Group is Headquartered in London, and comprises of: - HDR | Hurley Palmer Flatt - HDR | Andrew Reid - HDR | Bradbrook Consulting - HDR | Concentre Consulting

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 Merchants supplies a comprehensive portfolio of heating, plumbing and renewable energy solutions for both domestic and commercial projects. They also provide a range of support services to customers include heating system design and specification, commissioning, ancillary certification, after-sale service and installer training.

Heat Orkney has an experienced team who can assess, install and commission any size of heat pump or air conditioning equipment. We pride ourselves on a professional service where the customer satisfaction comes first. They offer a free quote to supply, or supply and install, any sized systems throughout the whole of Orkney- including outlying islands, Shetland and northern Scotland.

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

As buildings and their systems are used and age, they require regular maintenance, repair, and replacement. Whether the plumbing systems need to be repaired or completely replaced HRC can get the job done. They provide leak detection, new plumbing fixtures, pumping, sink repair & replacement, sump pump repair / new installation, water heaters & tank-less water heaters and much more.

Heating Force has experience on both sides of the heating industry, and that’s enabled them to build one of the biggest free resources in the UK – helping over 60,000-150,000 visitors with boiler problems every-single-month. They also connect homeowners with cheap boiler installers, such as HEATABLE or WarmZilla.

Heinen & Hopman are experts in the field of designing, engineering and installing heating, ventilation, air conditioning (HVAC) and refrigeration systems on both land and sea.

For over 125 years, Redlands and Henry Bush Plumbing, Heating, and Air have been proudly serving the Inland Empire community with top-notch HVAC service and expertise. When it comes to any plumbing and HVAC needs, they're the leaders who customers can rely on for honest service. Their experienced team is dedicated to exceptional service.

Building on over 50 years of experience in HVAC-R coatings, Heresite Protective Coatings, LLC invests in R&D and testing services. Their NSF certification for Food Service Equipment, as well as meeting the rigorous ISO 20340 standard for extreme offshore conditions, show how they develop protection for HVAC-R applications.

As a non-profit organization, HETAS pride itself on investing surplus funds into business areas that directly contribute to safely reducing particulate and carbon emissions for the benefit of the people and the environment.

HEVAC is a company specializing in supply of environmental control systems for the commercial Air-Conditioning industry. They are probably best known for our legendary ultra reliable HTC4 temperature controller that has been in continuous production for over 30 years.

Hevac Limited is one of Ireland's leading domestic, commercial & industrial plumbing & heating specialists. They operate in offices and warehouse facilities in Dublin and Cork comprising over 10,000 square meters of space. They supply every plumbing & heating component imaginable to the residential, commercial, and industrial sectors and can offer in-house specialists including design engineers, CAD technicians, and system specialists.

Hewlett Packard Enterprise is a globally renowned enterprise based out of San Jose, California, USA. The company provides AI-driven data storage, software solutions, cloud infrastructure, networking solutions, servers and systems, along with HVAC software services.

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.

Hicool is a manufacturer of air-moving products in India with operations since 1988. Hicool air moving products are used in a variety of industries including but not limited to, IT & telecom, HVAC, automotive and rail technology, refrigeration, cold chain technology, defense and medical equipment.

No matter what problem users are having with the plumbing in their Denver home, High 5 Plumbing can help. Whether they need help with the sewer line, drains, water heater, or any other part of the home plumbing system, they are on hand to help the users.

Highside Chemicals, Inc. has manufactured the highest quality chemical products for the maintenance, installation and repair of refrigeration, air conditioning and plumbing systems for over eighty-five years. All products are thoroughly tested and proven to perform to the highest standards. Their commitment to quality along with excellent customer service and technical support makes Highside Chemicals the best choice.

Hill & Associates Ltd. is a globally renowned consultancy and services firm that help enterprises identify and mitigate risks to their business in a cost effective and suitable manner, thus enabling them to continue to operate securely and ethically.

Hiller provides residential and commercial service, installation, and repair throughout Tennessee, Southern Kentucky, and Northern Alabama. Hiller is Tennessee’s largest residential plumbing, heating, air conditioning, and electrical services provider.

Hillphoenix serves the food retail industry as the manufacturer of Display Cases, Specialty Products, Refrigeration and Power Systems, and provides a wide variety of in-store services through The AMS Group. The story of Hillphoenix is built on creativity and innovation delivered through people invigorated by a strong sense of responsibility to help the customers win in their marketplaces.

Hilti is a pioneer in providing technology products, systems and services to the worldwide construction industry. They supply the construction and energy industries with products, systems, software and services.

HiRef develops cutting edge technology, cooling solutions for data centers and telecom shelters with the highest reliability. They offer innovative solutions for end-user needs through continuous Research and Development and clear customer-orientated philosophy.

Hisense VRF product is manufactured by Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd., which is a joint-venture company between China and Japan. And its business involves commercial air conditioning technology research and development, product manufacturing, marketing and service.