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

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.

Since 1914, HB McClure has served homes and businesses in Central Pennsylvania by providing premier residential, commercial, and design/build mechanical services, including heating, cooling, plumbing, electrical, and fuel oil and propane delivery. Our expert technicians evaluate each job, recommend the best solutions, and allow the client to choose the right option for their needs.

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

The Heat Exchange Institute (HEI) is a non-profit trade association committed to the technical advancement, promotion, and understanding of a broad range of utility and industrial-scale heat exchange and vacuum apparatus. The primary purpose of HEI is to develop and publish standards which advance the technology, increase the efficiency, and promote the use of heat exchange and vacuum apparatus.

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

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.

Hoffman & Hoffman, Inc. is a company that provides expertise in the selection and application of commercial and industrial heating, ventilation, air conditioning, filtration and direct digital control (DDC) systems. They represent manufacturers of the highest quality HVAC equipment and controls available on the market today.

The Heating and Air Conditioning Contractors at Hoffmann Brothers have provided the greater St. Louis area with reliable and professional services for more than 40 years. They incorporate modern HVAC and plumbing technology. The Hoffmann Brothers’ Heating team install or repair heating systems of any brand. Some appliance repairs offered include: Refrigerator Repairs, Microwaves, Dishwasher Repairs, Freezer Repairs, etc.

For nearly 20 years, Holtzople Heating and Air Conditioning has been a leading HVAC company serving central Maryland and southern Pennsylvania, featuring star brands such as Trane, Lennox, Carrier, Bryant, ClimateMaster and more. Holtzople provides complete installation, repair and preventive maintenance agreements for residential heat pumps and air conditioners, as well as oil and gas furnaces and boilers.

Hugh M. Cunningham Companies offers premier sales representation to all distribution sectors of the HVAC and Refrigeration markets in the US States of Texas, Louisiana, New Mexico, Oklahoma and Arkansas.

Since 1979, Indoor Comfort Team has performed heating and air conditioning services for residential customers across greater St. Louis, including Metro East suburbs in St. Clair County, Illinois. They provide quality services with a full guarantee. They're a family-owned & operated HVAC company, offering superior residential HVAC services to St. Louis & surrounding areas.

IonicBlue® is a joint venture between Johnson Controls, the global pioneer in delivering energy and infrastructure solutions, and Apollo Global Management a leading, global alternative asset manager. They deliver a total solutions approach through the expertise of Johnson Controls and the unmatched ability of Apollo to provide alternative capital solutions.

Island Heating & Air Conditioning provide services for all AC maintenance and furnace repair needs. They also deal with AC Installation, AC Repair Service, Complete AC Replacement, Furnace Maintenance, Heat Pump Maintenance, and Heat Pump Installation.

At Jade Air, their priority is serving air conditioning and heating (HVAC) needs including a/c repair, troubleshooting and maintenance. Since 1991, they have been providing quality and reliable HVAC service to the Dallas area, in Texas, USA.

Klondike Air | Heating & Cooling ExOrange County’s most trusted residential air conditioning and heating/heater repair service, installation, and maintenance specialists since 1989.

Klondike Air Conditioning and Heating, a family-owned and operated business, has been catering to the heating, air conditioning, indoor comfort, and air quality requirements of Orange County since 1989. Their objective is to deliver superior workmanship in HVAC service, repairs, and installations. From system installations and maintenance to repairs and efficiency upgrades, trust Klondike Air for all HVAC needs.

In 2010, a few marketing guys came together to start something new. Frustrated with the standard in the marketing world to put profit over value, founders wanted to do things differently.

Lendlease is a globally integrated real estate and investment group with core expertise in shaping cities and creating strong and connected communities. They create award-winning urban precincts, new communities for older people and young families just starting out, retail precincts, and work places to the highest sustainability standards.

Marlo is a manufacturer of Modular Air Handling Units (AHU’s), Cooling, Heating, Steam, DX (refrigerant) coils, shell & tube heat exchangers and various equipment for the Military.

MacDonald-Miller Facility Solutions is the top choice, full-service, design-build, mechanical contractor in the Pacific Northwest. Whether you simply have a service call, or are planning a 40-story office building, we have the right team of system experts – for you and your buildings’ needs. We offer smart building services such as Plumbing, Electrical and Lightening, and HVAC maintenance.

Mace MEP Services are an international consultancy and construction business. They shape the cities and communities of the future by connecting clients, communities, suppliers and partners. They have a highly experienced mechanical, electrical and public health (MEP) team that drives efficiency and value on site by offering specialist contracting capability that drives value and efficiencies on one of the largest construction packages on site.

Madison Industries is a globally-renowned mechanical engineering, HVAC equipment and industrial automation solutions firm conglomerate based out of Chicago, Illinois, USA. The conglomerate believes and strives in providing a safer and healthier world, with state-of-the-art electronics, HVAC equipment, home and building automation systems that are energy efficient and cost effective.

Maitz Home Services is listed as an essential business and are OPEN. They take extraordinary precautions to assure the safety of the employees and the clients.

Marston Holdings offer integrated technology-enabled solutions from design and implementation to management and recovery, supporting the government, utilities and private sectors.

MSCA is a renowned organization for HVACR contractors, providing education, marketing, and labor/management services to assure its contractor members deliver quality performance, value and expertise for all building system needs.

Miller-Weiss-Kruse Inc. is a representative of quality manufacturers to the HVAC/R industry throughout Indiana, Wisconsin, Illinois.

At Mort's Water Company, they deal with all kinds of well pump installation, Pump and well service in Mason City Iowa, Latimer IA, Hampton IA, Sheffield IA, IowaFalls IA, Allison, IA, Dumont IA, Mort's Water Company, Iowa.

At MR Heating & Air Conditioning in Mt Washington, they'll provide advice on the purchase of a new air conditioning and heating system, help maintain the existing system, or provide quality HVAC repair services to keep comfortable all year round.

story - Dave Tremain, founder, started designing and manufacturing pumps in 1965 under the name, MH Tool Company. In 1972, Dave added the ‘T’ for his last name, Tremain, and the business became incorporated as MTH Tool Company, Inc.