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.

Gree Electric Appliances, Inc. of Zhuhai is a diversified international industrial group, whose business covers residential air conditioners, central air conditioners, intelligent equipment, home appliances, air source water heaters, smart phones and refrigerators.

Green Builder Media is a globally renowned media company in the North American residential building and HVAC industry, focused exclusively on green building and responsible growth. With a comprehensive suite of print media, online options, demonstration homes, case studies, training and education vehicles, and live events, Green Builder Media assists building professionals prepare themselves for the new green economy.

GREEN LINK is an innovative engineering company that develops and produces polymeric architectural products for the construction and HVAC industry. They work with contractors, architects, building owners and facility managers to engineer and produce the best possible solutions to meet the construction challenges.

Greenergy Data Centers is one of the largest and most power-efficient purpose-built data center solutions provider in the Baltic region. They ensure that the stored data has the smallest possible ecological footprint, while utilizing the benefits of secure large-scale data management. Their facility in Tallinn is the most energy-efficient and secure data center in the Baltics.

Greenmill Supply Company is one of the UK's pioneer wholesalers of Air Conditioning and Ventilation Install products. They provide Air Conditioning Supplies, Ventilation Supplies, Plumbing Supplies, Fixture and Fittings Supplies, and ZoomLock Braze-free Systems.

GROHE is one of the global brands for complete bathroom solutions and kitchen fittings. GROHE Sense water security systems is a recent initiative which is an innovative component in the growth market of smart home technology.

Groupe Atlantic is committed to implementing the best possible solutions for controlling the temperature of domestic hot water and indoor air, heating (programmable radiators, commercial and industrial boilers, heat pumps and hybrid solutions), domestic hot water (electric, solar and heat pump water heaters), air conditioning and ventilation.

As a HVAC supplier they believe that all of the clients deserve the highest level of quality and service. Whether the business is Air Conditioning, Heating and Cooling or Building Management, they have the necessary technology know-how to offer customized products and services.

GS1 Germany accompanies the development and implementation of open, cross-industry, worldwide standards. On this basis, they also develop process and application recommendations. They support companies from different industries in the implementation and show solutions for more added value.

GTS HVAC Inc. is a professional, woman-owned HVAC service provider. They design, fabricate, install and service residential and commercial heating, ventilation and air conditioning (HVAC) systems.

Guangdong Zhaoqing Deton Co., Ltd. is a professional manufacturer with the ability of design, production and sales of ventilation equipment. It covers an area of 200,000 square meters and has more than 1000 employees. Deton owns the largest ventilation equipment manufacture base in Southern China.

Guin Service is an HVAC company based in Birmingham. They are a family owned and operated HVAC company. Established as a group of specialized mechanics, Guin Service has grown as one of the Alabama’s largest HVAC Company that provides quality work and exceptional customer service.

Gulf Extrusions is an aluminium extrusion company, member of the Al Ghurair Group of companies. The company is strategically located in Dubai alongside its main supplier, Dubai Aluminium, and the foremost gateway to the world.

Heating and Cooling, Toronto is an experienced company that deals with heating and cooling services in the Toronto area. They are a major air conditioner and furnace service provider, who believe in providing quality solutions in lowest price.

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.

H.Stars (Guangzhou) Refrigerating Equipment Group Ltd. is Hongkong group company,established in Economic & Technological Development Zone of Guangzhou in 1992, composed of 8 subsidiaries to provide one-stop solution to HVAC customers, specializing in R&D, production, design and installation.

H2GO Power is a pioneering cleantech company. They develop and deliver hydrogen energy storage technology for zero-emission, safe and reliable power supply, with a range of commercial applications.

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.

Haisma Heating & Cooling Inc. is an HVAC company serving West Michigan. The company was established by Garry Haisma, a Northwest side Grand Rapids area native, in 1981.

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.

Haldatec provide a holistic approach, offering solutions to applications where often several different approaches are considered, then in consultation with the client, the most appropriate choice of product or system is selected to cater for immediate and future needs.

Haley Mechanical, headquartered in Dexter, Michigan, is one of the pre-eminent residential HVAC companies in Michigan, servicing the Ann Arbor area. Services provided include Heating, Cooling, Geothermal Heating, HVAC, Plumbing, Electrical, Generators, Air Quality, Repair and Installation, and Drain Cleaning.

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.

Hamilton Air Conditioning has been supplying top quality air conditioning for over thirty years. They owe it all to their talented engineers! Without their knowledge, their passion and their attention to detail, they wouldn’t have been able to provide so many fantastic systems to their trusted clients over the years.

Hamlin offers full-service ductwork manufacturing and architectural sheet metal fabrication services, producing custom sheet metal products for roofing HVAC.

HAMPDEN ENGINEERING CORPORATION has built a reputation for manufacturing Cutting Edge, Engineering and Technology Training Equipment of the highest quality since 1954.

Hanon Systems aspires to be a pioneer in innovative thermal and energy management solutions and is steadfast in its commitment to create sustainable long-term success. To complement the vision are three strategic pillars that serve as a guide for all employees through clear and defined direction to achieve company growth.

In the past 60 years, HE has been dedicating itself to the prosperity and development of China’s equipment manufacturing industry. With great efforts, it has developed a series of leading products that ranges from nuclear power, hydropower, coal power, gas power, ships power plants and electric-driven devices to turnkey power plant projects, in which the core technical competences have reached the world’s advanced level.