Grasslin by Intermatic and Intermatic manufacture time based and adaptive defrost energy controls for the HVACR industry. Products include mechanical, digital and defrost timers, adaptive defrost, surge protection and hour-meters.

Great Guys is one of the fastest growing Technician Owned HVAC & Electrical companies in the Denver Metro! Their trusted Heating, Cooling, Ventilation & Electrical technicians solve all HVAC problems, and make recommendations for improved solutions to ensure the home or business is always comfortable, efficient and safe. They offer comprehensive services and equipment that are uniquely selected to best meet varying needs.

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 Cooling specialize in three distinct areas, the first being the provision of refrigerated storage to satisfy both frozen and chilled demands, the second is the application of high efficiency cooling systems utilizing the natural refrigerant CO2 and the third area is the design & installation of cooling systems with full or partial heat recovery.

Based in West Palm Beach, Greenfox Air Quality specializes in HVAC remediation and air quality services. Their team of seasoned air quality professionals is dedicated to conducting detailed inspections and remediation of residential or commercial HVAC systems. They address a comprehensive range of HVAC and air quality issues, ensuring the environment is not just clean, but truly healthy.

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.

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.

GTC provides multi-utility networks for new-build developments across England, Scotland and Wales. GTC designs, installs, adopts, owns and operates network infrastructure for all the utilities – heat, electricity, gigabit-capable fiber broadband, water, wastewater, and gas.

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.

Giwee Group is a global technology group integrating the production, research, and marketing of HVAC and consumer electrical appliances. The group has gathered many high-quality professional and technical talents in China, relying on technological innovation to develop products that are more in line with market trends and consumer needs, creating a more comfortable and harmonious living space for users.

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.

Gustave A. Larson Company is the Midwest, Plains and Mountain States wholesale distributor of Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) equipment, parts, & supplies.

The H.M. Sweeny Company is a pioneer distributor of air conditioning, heating, ventilation, and refrigeration parts and equipment.

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.

Haigh’s Air & Refrigeration is one-stop shop for all the air conditioning and refrigeration needs on the Hunter Valley. Their fully licensed and insured team can do everything from installations and repairs to servicing and maintenance.

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.

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.

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.

Harder Mechanical is a large nationally recognized contractor with an outstanding reputation for working safely, meeting tough schedules, delivering a quality project and coming in on budget. They provide HVAC, Plumbing, Process Piping, Steel Erection, Concrete Installation, Complex Equipment Installation, Design Assist/Build Service and much more.

Hardware & Electrical Co. L.L.C. (HEECO) was established in the year 1985 by Mr. Tommaso Briata and Mr. Abshir Mohamud with a vision to be the supplier of Building Materials, Hardware, Plumbing, Sanitary Pipes & Fittings and Electrical Equipment in the United Arab Emirates.

Harlen Johnson Heating & Air Conditioning is an HVAC company that provides reliable heating and air conditioning services for residential and commercial customers. They specialize in providing the most effective solution for the home or company.

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.

Harry Eklof & Associates Inc. is a manufacturer representative. They offer training services and also connect the user to the following products: Plumbing, HVAC, Bath Fixtures, Sump Sewage, Tools.

Hart-Hammer, Inc. is a US-based provider of sales and engineering support in Iowa, Nebraska, the Quad Cities, and Western Illinois. They represent 27 HVAC manufacturers including AAON, Nailor, Ruskin, CamFil, Strobic, and many others. The company focuses on heating and air conditioning services for commercial/institutional and temperature control/measurement for hospitals and laboratories.

Hartman Brothers Heating & Air Conditioning Inc is a full service HVAC company based in New Haven, IN. They offer a wide variety of products and services including installation; engineering; sheet metal fabrication; custom designed heating, cooling, and ventilation systems.

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.