Linear Air Diffusers are specialists in commercial grade aluminum linear slot diffusers, linear bar grilles, and custom plenums. They have been manufacturing air diffusion products such as: Air Grilles, Registers, and Diffusers (GRD’s) for over 40 years. Their business model is based on devoted investments with the use of modern robotics manufacturing, 3D rapid prototyping, computational fluid dynamics simulations (CFD), and BIM.

Lobell Sales, LLC represents quality manufacturers servicing wholesale distributors and OEM's in the HVAC/R, appliance parts, electrical, and plumbing industries in Alabama, Arkansas, Florida Panhandle, Louisiana, Mississippi, and Tennessee.

LouisianaGroup offers premier sales representation to all sectors of the HVAC and Refrigeration markets throughout the state of Louisiana. AccountManagers are dedicated to customers' needs and are supported by market and sales specialists.

M&K Heating and Air Conditioning provides home comfort solutions in London and surrounding communities.

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.

The Mechanical Contractors Association of America (MCAA) serves the unique needs of approximately 2,600 firms involved in heating, air conditioning, refrigeration, plumbing, piping, and mechanical service.

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.

Messe Frankfurt is the trade fair, congress and event organizer with its own exhibition grounds. The wide range of services includes renting exhibition grounds, trade fair construction and marketing, personnel and food service.

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

MJM Associates is a multi-line field sales and marketing agency representing quality HVAC/R manufacturers throughout the Rocky Mountain States.

The Mobile Air Conditioning Society (MACS) Worldwide is a pioneer trade association for manufacturers, service repair and distribution for the vehicle air conditioning industry.

Modigent leads in next-generation infrastructure, technology, and energy solutions, with a strategically expanding national presence in the HVAC, plumbing, and controls systems industry. Renowned for digital innovation, a people-first culture, and sustainable solutions, our people answer the call of service and quality that moves communities forward.

Mulcahy Company is a manufacturer representative principally serving the heating, air conditioning, and plumbing industries. Mulcahy represents companies who manufacture a variety of products required by these industries, such as centrifugal pumps, boilers, cooling towers, filtration systems, heat exchangers, tanks, piping systems, valves, instruments, motor control devices, solar energy and much more.

NAFFCO was founded in Dubai, UAE to become the world's leading producer and supplier of life safety solutions. By recognizing the importance and convenience of having easy access to multiple safety services, we became specialized by offering complete solutions under one roof for all types of high-quality firefighting equipment, fire protection systems, fire alarms, addressable emergency systems, security systems, and custom-made vehicle.

NATE is a nonprofit certification organization for heating, ventilation, air conditioning and refrigeration (HVACR) technicians. They provide service and installation certifications in: air conditioning, air distribution, air-to-air heat pumps, gas furnaces, oil furnaces, hydronics gas, hydronics oil, light commercial refrigeration, commercial refrigeration, ground source heat pump loop installer, and HVAC efficiency analyst.

NADCA is an international association of over 1,200 companies that provide HVAC inspection, maintenance (i.e., cleaning) and restoration services. NADCA offers standards, specifications, specialized training and certification for industry professionals.

NAEIR is a national nonprofit organization that takes in donations of excess inventory and redistributes those goods to schools and nonprofit organization.

The National Association of Home Builders represents the largest network of craftsmen, innovators and problem solvers dedicated to building and enriching communities.

The National Board of Boiler and Pressure Vessel Inspectors was created in 1919 to promote greater safety to life and property through uniformity in the construction, installation, repair, maintenance, and inspection of pressure equipment.

National Center for Construction Education and Research (NCCER) is a not-for-profit education foundation created in 1996, as The National Center for Construction Education and Research. NCCER develops standardized construction and maintenance curriculum and assessments with portable credentials.

An ANSI-accredited Standards Developing Organization, the National Electrical Manufacturers Association (NEMA) gives members a competitive edge in today's rapidly changing marketplace by expanding market opportunities, acquiring exclusive business intelligence, removing market barriers, building supply chain connections, and harnessing innovation.

The National Environmental Balancing Bureau (NEBB) is the premier international association of Certified Firms that perform Building Systems Commissioning, Building Envelope Testing, Cleanroom Performance Testing, Fume Hood Testing, Retro-Commissioning and much more!

The National Fire Protection Association (NFPA) is a trusted and respected fixture in the lives of safety professionals across the globe. As a self-funded nonprofit, the association strives to help save lives and reduce loss with information, knowledge, and passion. More than 10,000 volunteers make up the more than 250 technical committees responsible for publishing NFPA codes and standards.

The National Ground Water Association represents groundwater industry professionals including contractors involved in geothermal heat pump drilling and system installation.

The Occupational Safety and Health Act of 1970 established NIOSH as a research agency focused on the study of worker safety and health, and empowering employers and workers to create safe and healthy workplaces. NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. It has the mandate to assure “every man and woman in the Nation is safe and in healthy working conditions.

The institute's mission is to serve the nation and the public interest by supporting advances in building science and technology to improve the built environment.

The National Institute of Standards and Technology (NIST) was founded in 1901 and is now part of the U.S. Department of Commerce. NIST measurements support the smallest of technologies to the largest and most complex of human-made creations, ranging from nano-scale devices so tiny that tens of thousands can fit on the end of a single human hair up to earthquake-resistant skyscrapers and global communication networks.

NMBS (National Merchant Buying Society) is the UK’s largest buying group for independent builder’s, plumbing and heating, timber, and hardware merchants.

N.V.g specializes in everything within ventilation and has strong in-house production, close to where all the project's value creation processes must be complied with, as the last link in the phases.

The Norman Economic Development Coalition is dedicated to expanding the economic base of the Norman community, enhancing the earning opportunities of area residents by retaining and expanding existing businesses and industries, as well as attracting desirable new employers that are consistent with Norman's high quality of life.